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Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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1

Property:NbrProdWells | Open Energy Information  

Open Energy Info (EERE)

search Property Name NbrProdWells Property Type Number Description Number of production wells serving this plant Pages using the property "NbrProdWells" Showing 6 pages...

2

Property:GrossProdCapacity | Open Energy Information  

Open Energy Info (EERE)

GrossProdCapacity GrossProdCapacity Jump to: navigation, search Property Name GrossProdCapacity Property Type Quantity Description Sum of the property AvgAnnlGrossOpCpcty for all Energy Generation Facilities with properties: Sector: Geothermal Energy InGeothermalResourceArea: set to the the variable vName of the Geothermal Resource Area Use this property to express potential electric energy generation, such as Nameplate Capacity. The default unit is megawatts (MW). For spatial capacity, use property Volume. Acceptable units (and their conversions) are: 1 MW,MWe,megawatt,Megawatt,MegaWatt,MEGAWATT,megawatts,Megawatt,MegaWatts,MEGAWATT,MEGAWATTS 1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS 1000000000 mW,milliwatt,milliwatts,MILLIWATT,MILLIWATTS

3

Property:NetProdCapacity | Open Energy Information  

Open Energy Info (EERE)

NetProdCapacity NetProdCapacity Jump to: navigation, search Property Name NetProdCapacity Property Type Quantity Description Sum of the property SummerPeakNetCpcty for all Energy Generation Facilities with properties: Sector: Geothermal Energy InGeothermalResourceArea: set to the the variable vName of the Geothermal Resource Area Use this property to express potential electric energy generation, such as Nameplate Capacity. The default unit is megawatts (MW). For spatial capacity, use property Volume. Acceptable units (and their conversions) are: 1 MW,MWe,megawatt,Megawatt,MegaWatt,MEGAWATT,megawatts,Megawatt,MegaWatts,MEGAWATT,MEGAWATTS 1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS 1000000000 mW,milliwatt,milliwatts,MILLIWATT,MILLIWATTS

4

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT_CODE","PORT_CITY  

U.S. Energy Information Administration (EIA) Indexed Site

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT_CODE","PORT_CITY","PORT_STATE","PORT_PADD","GCTRY_CODE","CNTRY_NAME","QUANTITY","SULFUR","APIGRAVITY","PCOMP_RNAM","PCOMP_SNAM","PCOMP_STAT","STATE_NAME","PCOMP_PADD" RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT_CODE","PORT_CITY","PORT_STATE","PORT_PADD","GCTRY_CODE","CNTRY_NAME","QUANTITY","SULFUR","APIGRAVITY","PCOMP_RNAM","PCOMP_SNAM","PCOMP_STAT","STATE_NAME","PCOMP_PADD" 41547,"AEROPRES CORP ",1,253,"Isobutane/Ngl",3402,"NOYES, MN","MINNESOTA",2,260,"CANADA",2,0,0,,,,," " 41547,"AEROPRES CORP ",2,252,"Normal Butane/Ngl",3402,"NOYES, MN","MINNESOTA",2,260,"CANADA",5,0,0,,,,," "

5

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Methane (CH 4 ) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.62334 6.672 10 -4 41.7 0.09253 3.6257 1.6263 3.9716 9.5243 0.00 T p Ionization Brems Pair prod Photonucl Total...

6

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Methane based) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.54993 1.064 10 -3 61.2 0.09946 3.4708 1.6442 4.1399 9.9500 0.00 T p Ionization Brems Pair prod Photonucl Total...

7

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

fluoride (CsF) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.42132 4.115 440.7 0.22052 2.7280 0.0084 3.3374 5.9046 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA...

8

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

fluoride MgF 2 ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.48153 3.000 134.3 0.07934 3.6485 0.1369 2.8630 3.7105 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA...

9

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

fluoride (CaF 2 ) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.49670 3.180 166.0 0.06942 3.5263 0.0676 3.1683 4.0653 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA...

10

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

fluoride (LiF) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.46262 2.635 94.0 0.07593 3.7478 0.0171 2.7049 3.1667 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA...

11

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

fluoride (BaF 2 ) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.42207 4.893 375.9 0.15991 2.8867 -0.0099 3.3870 5.4116 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA...

12

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Ethanol (C 2 H 5 OH) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.56437 0.789 62.9 0.09878 3.4834 0.2218 2.7052 3.3699 0.00 T p Ionization Brems Pair prod Photonucl Total...

13

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Lithium oxide Li 2 O ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.46952 2.013 73.6 0.08035 3.7878 -0.0511 2.5874 2.9340 0.00 T p Ionization Brems Pair prod Photonucl...

14

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Lithium carbonate (Li 2 C-O 3 ) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.49720 2.110 87.9 0.09936 3.5417 0.0551 2.6598 3.2029 0.00 T p Ionization Brems Pair prod...

15

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Lithium iodide (LiI) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.41939 3.494 485.1 0.23274 2.7146 0.0892 3.3702 6.2671 0.00 T p Ionization Brems Pair prod Photonucl...

16

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Lithium amide (LiNH 2 ) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.52257 1.178 55.5 0.08740 3.7534 0.0198 2.5152 2.7961 0.00 T p Ionization Brems Pair prod...

17

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Lithium Z A gmol gcm 3 I eV a k m s x 0 x 1 C 0 3 (Li) 6.941 (2) 0.534 40.0 0.95136 2.4993 0.1304 1.6397 3.1221 0.14 T p Ionization Brems Pair prod...

18

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Lithium hydride (LiH) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.50321 0.820 36.5 0.90567 2.5849 -0.0988 1.4515 2.3580 0.00 T p Ionization Brems Pair prod...

19

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

sucrose ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.55014 1.070 74.2 0.09143 3.4982 0.2187 2.7680 3.4216 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range...

20

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Plutonium dioxide (PuO 2 ) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.40583 11.460 746.5 0.20594 2.6522 -0.2311 3.5554 5.9719 0.00 T p Ionization Brems Pair prod...

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Benzene C 6 H 6 ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.53769 0.879 63.4 0.16519 3.2174 0.1710 2.5091 3.3269 0.00 T p Ionization Brems Pair prod Photonucl Total...

22

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Butane (C 4 H 10 ) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.59497 2.489 10 -3 48.3 0.10852 3.4884 1.3792 3.7528 8.5651 0.00 T p Ionization Brems Pair prod...

23

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Liquid propane (C 3 H 8 ) ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.58962 0.493 52.0 0.10329 3.5620 0.2564 2.6271 3.4162 0.00 T p Ionization Brems Pair prod...

24

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Rhenium Z A gmol gcm 3 I eV a k m s x 0 x 1 C 0 75 (Re) 186.207 (1) 21.020 736.0 0.15184 2.8627 0.0559 3.4845 5.3445 0.08 T p Ionization Brems Pair prod...

25

Matched-pair classification  

Science Conference Proceedings (OSTI)

Following an analogous distinction in statistical hypothesis testing, we investigate variants of machine learning where the training set comes in matched pairs. We demonstrate that even conventional classifiers can exhibit improved performance when the input data has a matched-pair structure. Online algorithms, in particular, converge quicker when the data is presented in pairs. In some scenarios (such as the weak signal detection problem), matched pairs can be generated from independent samples, with the effect not only doubling the nominal size of the training set, but of providing the structure that leads to better learning. A family of 'dipole' algorithms is introduced that explicitly takes advantage of matched-pair structure in the input data and leads to further performance gains. Finally, we illustrate the application of matched-pair learning to chemical plume detection in hyperspectral imagery.

Theiler, James P [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

26

Nuclear pairing: basic phenomena revisited  

E-Print Network (OSTI)

I review the phenomena associated with pairing in nuclear physics, most prominently the ubiquitous presence of odd-even mass differences and the properties of the excitation spectra, very different for even-even and odd-A nuclei. There are also significant dynamical effects of pairing, visible in the inertias associated with nuclear rotation and large-amplitude shape deformation.

Bertsch, G F

2012-01-01T23:59:59.000Z

27

Context-sensitive dependency pairs  

Science Conference Proceedings (OSTI)

Termination is one of the most interesting problems when dealing with context-sensitive rewrite systems. Although there is a good number of techniques for proving termination of context-sensitive rewriting (CSR), the dependency pair approach, one of ... Keywords: dependency pairs, program analysis, term rewriting, termination

Beatriz Alarcn; Ral Gutirrez; Salvador Lucas

2006-12-01T23:59:59.000Z

28

Local pairs and small surfaces.  

SciTech Connect

More than 20 years after they were first discovered, high-temperature superconductors remain fundamentally baffling. In superconductors, conduction without electrical resistance arises through the pairing of electrons so as to overcome obstacles to current flow.

Julian, S. R.; Norman, M. R.; Materials Science Division; Univ. Toronto

2007-05-31T23:59:59.000Z

29

Context-sensitive dependency pairs  

Science Conference Proceedings (OSTI)

Termination is one of the most interesting problems when dealing with context-sensitive rewrite systems. Although a good number of techniques for proving termination of context-sensitive rewriting (CSR) have been proposed so far, the adaptation to CSR ... Keywords: Dependency pairs, Program analysis, Term rewriting, Termination

Beatriz Alarcn; Ral Gutirrez; Salvador Lucas

2010-08-01T23:59:59.000Z

30

Cooper pair transfer in nuclei  

E-Print Network (OSTI)

The second order DWBA implementation of two-particle transfer direct reactions which includes simultaneous and successive transfer, properly corrected by non-orthogonality effects is tested with the help of controlled nuclear structure and reaction inputs against data spanning the whole mass table, and showed to constitute a quantitative probe of nuclear pairing correlations.

G. Potel; A. Idini; F. Barranco; E. Vigezzi; R. A. Broglia

2013-04-09T23:59:59.000Z

31

Dynamical pairing states in cold gases  

E-Print Network (OSTI)

In this thesis, we study dynamical pairing of fermions caused by the time-dependent interaction. Fermionic pairing develops on time scales short compared to the quasiparticle relaxation time where existing approaches to ...

Barankov, Roman A

2006-01-01T23:59:59.000Z

32

Empirical evaluation of distributed pair programming  

Science Conference Proceedings (OSTI)

Pair programming, in which two individuals share a single computer to collaboratively develop software, has been shown to have many benefits in industry and in education. One drawback of pair programming is its collocation requirement, which limits its ... Keywords: Computer-supported cooperative work, Distributed pair programming, Empirical software engineering, Gesturing, Introductory programming

Brian Hanks

2008-07-01T23:59:59.000Z

33

Monopole-Antimonopole Pair Dyons  

Science Conference Proceedings (OSTI)

Monopole-antimonopole pair dyons are presented. The dyons possess opposite magnetic charge but carry the same electric charge. These stationary dyons possess finite energy. However they do not satisfy the first order Bogomol'nyi equations and are non-BPS solutions. They are axially symmetric and are characterized by a parameter, -1{<=}{eta}{<=}1 which determines the net electric charges of these dyons. These dyon solutions are solved numerically when the magnetic charge of the dipoles are n = {+-}1, {+-}2 for both vanishing and non-vanishing strength of the Higgs field potential. When {lambda} = 0, the dipole separation, total energy and net electric charge of the dyons increase exponentially fast to infinity when {eta} approaches {+-}1. However, when {lambda} = 1, all these three quantities approach finite critical values as {eta} approaches {+-}1.

Lim, Kok-Geng; Teh, Rosy; Wong, Khai-Ming [School of Physics, Universiti Sains Malaysia 11800 USM Penang (Malaysia)

2011-03-30T23:59:59.000Z

34

Effective pairing interactions with isospin density dependence  

Science Conference Proceedings (OSTI)

We perform Hartree-Fock-Bogoliubov (HFB) calculations for semi-magic calcium, nickel, tin, and lead isotopes and N=20,28,50, and 82 isotones using density-dependent pairing interactions recently derived from a microscopic nucleon-nucleon interaction. These interactions have an isovector component so that the pairing gaps in symmetric and neutron matter are reproduced. Our calculations well account for the experimental data for the neutron number dependence of binding energy, two-neutron separation energy, and odd-even mass staggering of these isotopes. This result suggests that by introducing the isovector term in the pairing interaction, one can construct a global effective pairing interaction that is applicable to nuclei in a wide range of the nuclear chart. It is also shown with the local density approximation that the pairing field deduced from the pairing gaps in infinite matter reproduces qualitatively well the pairing field for finite nuclei obtained with the HFB method.

Margueron, J. [Institut de Physique Nucleaire, IN2P3-CNRS and Universite Paris-Sud, F-91406 Orsay Cedex (France); Center for Mathematical Sciences, University of Aizu, Aizu-Wakamatsu, 965-8580 Fukushima (Japan); Sagawa, H. [Center for Mathematical Sciences, University of Aizu, Aizu-Wakamatsu, 965-8580 Fukushima (Japan); Hagino, K. [Department of Physics, Tohoku University, Sendai, 980-8578 (Japan)

2008-05-15T23:59:59.000Z

35

Factors affecting home range of mallard pairs  

SciTech Connect

Certain habitat and social factors were investigated for their effect on home range size of mallard (Anas platyhynchos) pairs breeding in a forested region of north-central Minnesota during the spring of 1971--72. Data from 31 radio-marked hens and drakes were used, but primary emphasis was placed on 8 pairs (5 with both members of the pair marked). Pairs were radio-tracked on river marsh areas, river channels, and large sand lakes to provide comparative data for evaluating home range size differences. Home ranges varied from an average of 53 ha for pairs using primarily river habitat to 871 ha for pairs using only large sand lakes. River and lake shorelines varied considerably in species and density of vegetation. Interaction between pairs as well as density of flocked males appeared to be influenced by these habitat differences with resultant effects on home range sizes.

Riechmann, J.H.

1976-06-01T23:59:59.000Z

36

Microsoft Word - 08031475_DocProd.doc  

Office of Legacy Management (LM)

SAL/S04639 SAL/S04639 U.S. Department of Energy Office of Legacy Management Work Performed by the S.M. Stoller Corporation Under DOE Contract No. for the U.S. Department of Energy Office of Legacy Management. Approved for public release; distribution is unlimited. DE AM01 07LM00060 - - April 2008 Groundwater and Surface Water Sampling at the Salmon, Mississippi, Site August 2008 U.S. Department of Energy DVP-April 2008, Salmon, Mississippi, Site August 2008 RIN 08031475 Page iii Contents Sampling Event Summary ...............................................................................................................1 Water Sampling Locations at the Salmon, Mississippi, Site ...........................................................2 Data Assessment Summary ..............................................................................................................3

37

Microsoft Word - 07121310 DocProd.doc  

Office of Legacy Management (LM)

613 613 2008 - - U.S. Department of Energy Office of Legacy Management Work Performed by the S.M. Stoller Corporation Under DOE Contract No. for the U.S. Department of Energy Office of Legacy Management. Approved for public release; distribution is unlimited. DE AM01 07LM00060 - - December 2007 Groundwater Sampling at the Monument Valley, Arizona, Processing Site March 2008 This page intentionally left blank U.S. Department of Energy DVP-December 2007, Monument Valley, Arizona, Processing Site March 2008 RIN 07121310 Page iii Contents Sampling Event Summary ...............................................................................................................1 Monument Valley, Arizona, Processing Site Sample Locations .....................................................2

38

Microsoft Word - 08021395 DocProd.doc  

Office of Legacy Management (LM)

SHP/S04483 SHP/S04483 U.S. Department of Energy Office of Legacy Management Work Performed by the S.M. Stoller Corporation Under DOE Contract No. for the U.S. Department of Energy Office of Legacy Management. Approved for public release; distribution is unlimited. DE AM01 07LM00060 - - March 2008 Groundwater and Surface Water Sampling at the Shiprock, New Mexico, Disposal Site July 2008 This page intentionally left blank U.S. Department of Energy DVP-March 2008, Shiprock, New Mexico, Disposal Site July 2008 RIN 08021395 Page iii Contents Sampling Event Summary ...............................................................................................................1 Shiprock, New Mexico, Disposal Site Sample Monitoring Locations ............................................5

39

Microsoft Word - 08101898_DocProd.doc  

Office of Legacy Management (LM)

and Surface Water and Surface Water Sampling at the Riverton, Wyoming, Processing Site February 2009 LMS/RVT/S01108 This page intentionally left blank U.S. Department of Energy DVP-November 2008, Riverton, Wyoming, Processing Site February 2009 RIN 08101898 Page i Contents Sampling Event Summary ...............................................................................................................1 Riverton, Wyoming, Processing Site, Sample Locations ................................................................3 Data Assessment Summary..............................................................................................................5 Water Sampling Field Activities Verification Checklist .............................................................7

40

Microsoft Word - 08071744_DocProd.doc  

Office of Legacy Management (LM)

well. Monitor wells with an "SC" suffix are completed in the Upper Sand aquifer of the Wind River Formation. Wells with a "DC" suffix are completed in the Main Sand aquifer, and...

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Particle Prod. at 0-1  

NLE Websites -- All DOE Office Websites (Extended Search)

September 11, 1997 Particle Production at 0 from the Collider K. W. Del Signore, H. R. Gustafson, K. D. Hanson, L. W. Jones, M. J. Longo*, F. Lopez University of Michigan, Ann...

42

Prod. of Ag. Chem. - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Energy used to manufacture agricultural chemicals. In the original version of the model, the estimates of the energy requirements for fertilizer were based on a ...

43

Microsoft Word - 08071744_DocProd.doc  

Office of Legacy Management (LM)

Shirley Basin South, Wyoming Shirley Basin South, Wyoming Disposal Site January 2009 LMS/SBS/S00808 This page intentionally left blank This page intentionally left blank U.S. Department of Energy DVP-August 2008, Shirley Basin South, Wyoming, Disposal Site January 2009 RIN 08071744 Page i Contents Sampling Event Summary ...............................................................................................................1 Shirley Basin South, Wyoming, Disposal Site Sample Location Map ............................................2 Data Assessment Summary..............................................................................................................3 Water Sampling Field Activities Verification Checklist .............................................................5

44

Intelligent pairing assistant for air operation centers  

Science Conference Proceedings (OSTI)

Within an Air Operations Center (AOC), planners make crucial decisions to create the air plan for any given day. They are expected to complete the plan in part by pairing targeting or collection tasks with the available platforms. Any assistance these ... Keywords: air operations center, intelligent user interface, pairing, reinforcement learning

Jeremy Ludwig; Eric Geiselman

2012-02-01T23:59:59.000Z

45

Quantum Invariants of the Pairing Hamiltonian  

E-Print Network (OSTI)

Quantum invariants of the orbit dependent pairing problem are identified in the limit where the orbits become degenerate. These quantum invariants are simultaneously diagonalized with the help of the Bethe ansatz method and a symmetry in their spectra relating the eigenvalues corresponding to different number of pairs is discussed. These quantum invariants are analogous to the well known rational Gaudin magnet Hamiltonians which play the same role in the reduced pairing case (i.e., orbit independent pairing with non degenerate energy levels). It is pointed out that although the reduced pairing and the degenerate cases are opposite of each other, the Bethe ansatz diagonalization of the invariant operators in both cases are based on the same algebraic structure described by the rational Gaudin algebra.

Y. Pehlivan

2008-06-11T23:59:59.000Z

46

Alloy solution hardening with solute pairs  

DOE Patents (OSTI)

Solution hardened alloys are formed by using at least two solutes which form associated solute pairs in the solvent metal lattice. Copper containing equal atomic percentages of aluminum and palladium is an example.

Mitchell, John W. (Charlottesville, VA)

1976-08-24T23:59:59.000Z

47

Distillation of vacuum entanglement to EPR pairs  

E-Print Network (OSTI)

It is shown that by means of local interactions between a quantized relativistic field and a pair of non-entangled atoms, entanglement can be extracted from the vacuum and delivered to the atoms. The resulting mixed state of the atoms can be further distilled to EPR pairs. Therefore, in principle, teleportation and other entanglement assisted quantum communication tasks can rely on the vacuum alone as a resource for entanglement.

Benni Reznik

2000-08-01T23:59:59.000Z

48

Pair-vibrational states in the presence of neutron-proton pairing  

E-Print Network (OSTI)

Pair vibrations are studied for a Hamiltonian with neutron-neutron, proton-proton and neutron-proton pairing. The spectrum is found to be rich in strongly correlated, low-lying excited states. Changing theratio of diagonal to off-diagonal pairing matrix elements is found to have a large impact on the excited-state spectrum. The variational configuration interaction (VCI) method, used to calculate the excitation spectrum, is found to be in very good agreement with exact solutions for systems with large degeneracies having equal T=0 and T=1 pairing strengths.

R. R. Chasman; P. Van Isacker

2010-01-18T23:59:59.000Z

49

Nuclear elements in Banach Jordan pairs Ottmar Loos  

E-Print Network (OSTI)

Nuclear elements in Banach Jordan pairs Ottmar Loos Abstract We introduce nuclear elements in Banach Jordan pairs, generalizing the nuclear elements Jordan pairs and show that the trace form Trintroduced in [3] may be extended to the nuclear

50

Competitive Vaporization and Decomposition of Liquid RDX Gregory T. Long, Sergey Vyazovkin, Brittany A. Brems, and Charles A. Wight*  

E-Print Network (OSTI)

Collaboratory for Advanced Computing and Simulations, Department of Physics & Astronomy, Department of Chemical at the Collaboratory for Advanced Computing and Simulations. 1K. L. McNesby, A. W. Miziolek, T. Nguyen, F. C. Delucia 78, 024304 (2008). 74J. Rylance and D. Stubley, Thermochim. Acta 13, 253 (1975). 75J. F. Baytos

Utah, University of

51

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

YORK",1,260,"CANADA",3,1,0,,,,," " 41486,"ALBINA ASPHALT ",1,931,"Asphalt & Road Oil",3310,"SWEETGRASS, MT","MONTANA",4,260,"CANADA",6,0,0,,,,," " 41486,"ALL AMERICAN...

52

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

Feedstocks, Naphtha less than 401 F end-point",5301,"HOUSTON, TX","TEXAS",3,515,"KOREA, SOUTH",45,0,0,,,,," " 40939,"ASTRA OIL CO LLC ",1,822,"Petrochemical...

53

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

YORK",1,260,"CANADA",3,1,0,,,,," " 41517,"ALBINA ASPHALT ",1,931,"Asphalt & Road Oil",3310,"SWEETGRASS, MT","MONTANA",4,260,"CANADA",6,0,0,,,,," " 41517,"ALL AMERICAN...

54

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

CITY REFINERY","TX","TEXAS",3 40968,"BP PRODUCTS NORTH AMERICA INC ",90,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",56,0.1,35.3,"BP PRODUCTS NORTH AMERICA...

55

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

","UNKNOWN PROCESSOR-TX","TX","TEXAS",3 41243,"ATLANTIC TRADING MARKETING ",19,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",53,3.25,19.23,"BP PRODUCTS NORTH AMERICA...

56

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

TEXAS",3,480,"ITALY",208,0,0,,,,," " 41182,"BP PRODUCTS NORTH AMERICA INC ",81,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",64,0.05,33.7,"BP PRODUCTS NORTH AMERICA...

57

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

CO LLC ","TOLEDO","OH","OHIO",2 41213,"BP PRODUCTS NORTH AMERICA INC ",80,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",65,3.07,20.8,"BP PRODUCTS NORTH AMERICA...

58

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

,"MICHIGAN",2,260,"CANADA",2,0,0,,,,," " 41394,"BP CANADA ENERGY MARKETING ",3,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",49,2.36,29.3,"BP PRODUCTS NORTH AMERICA...

59

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

CHIGAN",2,260,"CANADA",75,0,0,,,,," " 39844,"BP PRODUCTS NORTH AMERICA INC ",1,025,"Crude Oil",4105,"TOLEDO-SANDUSKY, OH","OHIO",2,260,"CANADA",59,3.78,21.4,"BP HUSKY REFINING LLC...

60

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

RICO",6,805,"RUSSIA",12,0,0,,,,," " 41152,"ATLANTIC TRADING MARKETING ",12,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",51,3.43,20.8,"BP PRODUCTS NORTH AMERICA...

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

REFINERY","IN","INDIANA",2 41029,"BP PRODUCTS NORTH AMERICA INC ",191,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",51,0.1,35.1,"BP PRODUCTS NORTH AMERICA...

62

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

PROCESSOR-MN","MN","MINNESOTA",2 40999,"BP PRODUCTS NORTH AMERICA INC ",76,025,"Crude Oil",3802,"PORT HURON, MI","MICHIGAN",2,260,"CANADA",51,0.44,38.9,"BP PRODUCTS NORTH...

63

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

LP ","GALENA PARK","TX","TEXAS",3 41333,"BP PRODUCTS NORTH AMERICA INC ",102,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",64,3.14,22,"BP PRODUCTS NORTH AMERICA...

64

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

INC ","HOUSTON (GULF)","TX","TEXAS",3 40574,"BP PRODUCTS NORTH AMERICA INC ",4,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",48,2.93,22.4,"BP PRODUCTS NORTH AMERICA...

65

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

,"MICHIGAN",2,260,"CANADA",5,0,0,,,,," " 41274,"BP CANADA ENERGY MARKETING ",4,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",53,3.58,20.6,"BP PRODUCTS NORTH AMERICA...

66

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

CHIGAN",2,260,"CANADA",9,0,0,,,,," " 41305,"BP PRODUCTS NORTH AMERICA INC ",56,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",67,1.58,30.8,"BP PRODUCTS NORTH AMERICA...

67

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

ESOTA",2,260,"CANADA",21,0,0,,,,," " 41364,"BP PRODUCTS NORTH AMERICA INC ",52,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",61,0.12,34.1,"BP PRODUCTS NORTH AMERICA...

68

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

CHIGAN",2,260,"CANADA",18,0,0,,,,," " 40209,"BP PRODUCTS NORTH AMERICA INC ",1,025,"Crude Oil",4105,"TOLEDO-SANDUSKY, OH","OHIO",2,260,"CANADA",63,3.15,21.5,"BP-HUSKY REFINING LLC...

69

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

CO ","ROGERSLACY","MS","MISSISSIPPI",3 41090,"ATLANTIC TRADING MARKETING ",22,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",70,3.58,21.5,"BP PRODUCTS NORTH AMERICA...

70

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

KINGDOM",13,0.95,0,,,,," " 41121,"ATLANTIC TRADING MARKETING ",13,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",36,3.58,21.4,"BP PRODUCTS NORTH AMERICA...

71

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

RICO",6,940,"VENEZUELA",80,0,0,,,,," " 41060,"ATLANTIC TRADING MARKETING ",16,025,"Crude Oil",3901,"CHICAGO, IL","ILLINOIS",2,260,"CANADA",54,3.15,21.8,"BP PRODUCTS NORTH AMERICA...

72

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

201,"SPRAGUE ENERGY CORP",1,461,"DIST, < 0.05% SUL (DOM.)",0131,"PORTSMOUTH, NH","NH",100,260,"CANADA",114,0,0 0201,"SPRAGUE ENERGY CORP",2,461,"DIST, < 0.05% SUL...

73

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

PRODUCTS NORTH AMERICA INC ",201,051,"SPECIAL NAPHTHAS",5301,"HOUSTON, TX","TEXAS",3,,"KOREA, SOUTH",43,0,0,,,,, 39113,"BP PRODUCTS NORTH AMERICA INC ",180,130,"MOTOR GAS,...

74

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

AMER",2,822,"NAPHTHA ( < 401 DEGREES F ENDPOINT)",5301,"HOUSTON, TX","TEXAS",3,515,"KOREA, REPUBLIC OF",14,0,0,,,,, 34000,"EXXON CHEM AMER",3,822,"NAPHTHA ( < 401 DEGREES F...

75

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

CO USA",6,850,"UNFINISHED OILS, RESIDUUM",2004,"BATON ROUGE, LA","LOUISIANA",3,515,"KOREA, REPUBLIC OF",486,0,0,"EXXON CO USA","BATON ROUGE","LA","LOUISIANA",3 34365,"EXXON CO...

76

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

INC ",1,822,"NAPHTHA ( < 401 DEGREES F ENDPOINT)",2909,"KALAMA, WA","WASHINGTON",5,515,"KOREA, REPUBLIC OF",75,0,0,,,,, 37652,"KILDAIR SERV LTD ",1,509,"RESIDUAL FUEL, 0.31-1.00%...

77

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

CO ",74,854,"LUBRICANTS, TOTAL",2704,"LOS ANGELES, CA","CALIFORNIA",5,,"KOREA, SOUTH",23,0,0,,,,, 38748,"CONOCOPHILLIPS CO ",54,020,"CRUDE OIL",5311,"FREEPORT,...

78

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

CO ",2,130,"MOTOR GAS, CONVENTIONAL, OTHER",2704,"LOS ANGELES, CA","CALIFORNIA",5,515,"KOREA, SOUTH",311,0,0,,,,, 39478,"CONOCOPHILLIPS CO ",3,138,"MOTOR GAS BLENDING COMPONENTS,...

79

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

INC",1,822,"NAPHTHA ( < 401 DEGREES F ENDPOINT)",2909,"KALAMA, WA","WASHINGTON",5,515,"KOREA, REPUBLIC OF",37,0,0,,,,, 35826,"KILDAIR SERV LTD",1,510,"RESIDUAL FUEL, > 1.00%...

80

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

Feedstocks, Naphtha less than 401 F end-point",5301,"HOUSTON, TX","TEXAS",3,515,"KOREA, SOUTH",67,0,0,,,,," " 41425,"APEX OIL CO ",1,465,"Distillate, 15 ppm Sulfur and...

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

INC ",22,854,"LUBRICANTS, TOTAL",2002,"NEW ORLEANS, LA","LOUISIANA",3,515,"KOREA, SOUTH",95,0,0,,,,, 38383,"CONOCO INC ",25,020,"CRUDE OIL",3310,"SWEETGRASS,...

82

RPT_PERIOD","R_S_NAME","LINE_NUM","PROD_CODE","PROD_NAME","PORT...  

U.S. Energy Information Administration (EIA) Indexed Site

Feedstocks, Naphtha less than 401 F end-point",5301,"HOUSTON, TX","TEXAS",3,515,"KOREA, SOUTH",22,0,0,,,,," " 41455,"APEX ENERGY LLC ",1,822,"Petrochemical Feedstocks,...

83

Optimizing the Performance of Lithium Titanate Spinal Paired...  

NLE Websites -- All DOE Office Websites (Extended Search)

Optimizing the Performance of Lithium Titanate Spinal Paired with Activated Carbon or Iron Phosphate Title Optimizing the Performance of Lithium Titanate Spinal Paired with...

84

Thermodynamics of pairing in mesoscopic systems  

E-Print Network (OSTI)

Using numerical and analytical methods implemented for different models we conduct a systematic study of thermodynamic properties of pairing correlation in mesoscopic nuclear systems. Various quantities are calculated and analyzed using the exact solution of pairing. An in-depth comparison of canonical, grand canonical, and microcanonical ensemble is conducted. The nature of the pairing phase transition in a small system is of a particular interest. We discuss the onset of discontinuity in the thermodynamic variables, fluctuations, and evolution of zeros of the canonical and grand canonical partition functions in the complex plane. The behavior of the Invariant Correlational Entropy is also studied in the transitional region of interest. The change in the character of the phase transition due to the presence of magnetic field is discussed along with studies of superconducting thermodynamics.

Tony Sumaryada; Alexander Volya

2007-06-12T23:59:59.000Z

85

Coulombic effect and renormalization in nuclear pairing  

Science Conference Proceedings (OSTI)

We investigate the effects of the Coulomb force on the nuclear pairing properties by performing the Gogny Hartree-Fock-Bogolyubov calculations for the N=20, 28, 50, 82, and 126 nuclei. The Coulomb force reduces the proton pair energy and the even-odd mass difference by about 25%, except for nuclei at and around the proton shell or subshell closure. We then propose a renormalization scheme via a reduction factor {gamma}{sub p} for the proton pairing channel. It is found that a single value {gamma}{sub p}=0.90 accounts well for the Coulombic effect for nuclei covering a wide range of the mass number and the neutron excess, including the nuclei around the shell or subshell closure.

Nakada, H.; Yamagami, M. [Department of Physics, Graduate School of Science, Chiba University, Yayoi-cho 1-33, Inage, Chiba 263-8522 (Japan); Department of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580 (Japan)

2011-03-15T23:59:59.000Z

86

Holographic EPR Pairs, Wormholes and Radiation  

E-Print Network (OSTI)

As evidence for the ER=EPR conjecture, it has recently been observed that the string that is holographically dual to an entangled quark-antiquark pair separating with (asymptotically) uniform acceleration has a wormhole on its worldsheet. We point out that a two-sided horizon and a wormhole actually appear for much more generic quark-antiquark trajectories, which is consistent with the fact that the members of an EPR pair need not be permanently out of causal contact. The feature that determines whether the causal structure of the string worldsheet is trivial or not turns out to be the emission of gluonic radiation by the dual quark and antiquark. In the strongly-coupled gauge theory, it is only when radiation is emitted that one obtains an unambiguous separation of the pair into entangled subsystems, and this is what is reflected on the gravity side by the existence of the worldsheet horizon.

Chernicoff, Mariano; Pedraza, Juan F

2013-01-01T23:59:59.000Z

87

Representability of Pairing Relation Algebras Representability of Pairing Relation Algebras Depends on our Ontology  

Science Conference Proceedings (OSTI)

We consider classes of relation algebras expanded with new operations based on the formation of ordered pairs. Examples for such algebras are pairing (or projection) algebras of algebraic logic and fork algebras of computer science. It is proved by Sain ... Keywords: non-well-founded set theories, projection elements, relation algebra

Agnes Kurucz; Istvn Nmeti

2000-12-01T23:59:59.000Z

88

Arithmetic Operators for Pairing-Based Cryptography  

Science Conference Proceedings (OSTI)

Since their introduction in constructive cryptographic applications, pairings over (hyper)elliptic curves are at the heart of an ever increasing number of protocols. Software implementations being rather slow, the study of hardware architectures became ... Keywords: ?Tpairing, FPGA, elliptic curve, finite field arithmetic, hardware accelerator

Jean-Luc Beuchat; Nicolas Brisebarre; Jrmie Detrey; Eiji Okamoto

2007-09-01T23:59:59.000Z

89

The free energy of vacancy pairs  

Science Conference Proceedings (OSTI)

The configurational free energy change ?A 2/k T associated with the introduction of pairs of vacancy defects into a two?dimensional triangular lattice with nearest neighbor interactions is calculated by lattice dynamics in the classical high temperature limit. It is found that second and third nearest neighbor vacancies yield the greatest decrease in the free energy.

Robert Cook; Alan Shuldiner

1978-01-01T23:59:59.000Z

90

The first known type (7,1) amicable pair  

Science Conference Proceedings (OSTI)

Amicable pairs of type (i, 1) have been the object of special search partly because they breed other amicable pairs. Examples exist for i = 2, 3, 4, 5, and 6. In this paper we exhibit the first known type (7, 1) pair. Keywords: amicable pairs

Mariano Garcia

2003-04-01T23:59:59.000Z

91

Electron-pair excitations and the molecular Coulomb continuum  

DOE Green Energy (OSTI)

Electron-pair excitations in the molecular hydrogen continuum are described by quantizing rotations of the momentum plane of the electron pair about by the pair's relative momentum. A helium-like description of the molecular pi.Joto double ionization is thus extended to higher angular momenta of the electron pair. A simple three-state superposition is found to account surprisingly well for recent observations of noncoplanar electron-pair, molecular-axis angular distributions.

Colgan, James [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

92

PAIR (Planning and Analysis of Inspection Resources)  

SciTech Connect

The safeguards inspection effort of the International Atomic Energy Agency consists of the efforts for the Physical Inventory Verifications to close the annual material balance, Interim Inventory Verifications, conducted mainly to satisfy the Timeliness Criteria, Flow Verifications to verify the transfer of material, and Containment and Surveillance activities, which help preserve continuity of knowledge concerning the material. Estimating the requiring overall future inspection effort under a variety of conditions is an important part of Agency planning. As exemplified by the sample results provides a straightforward means to analyze `What if` situations in safeguards implementation. It thereby permits managers and analysts to study future scenarios and their effect on human resources. It is planned to introduce into PAIR a direct capability for studying costs associated with these hypothetical changes in safeguards implementation. In this way PAIR could more easily assist the Safeguards Department in its current program of investigating new safeguards approaches.

Teichmann, T.; Santaniello, A. [Brookhaven National Lab., Upton, NY (United States); Fishbone, L.G. [International Atomic Energy Agency, Vienna (Austria)

1994-03-01T23:59:59.000Z

93

Pseudogap Pairing in Ultracold Fermi Atoms  

Science Conference Proceedings (OSTI)

The Bose-Einstein condensate to Bardeen-Cooper-Schrieffer crossover in ultracold Fermi gases creates an ideal environment to enrich our knowledge of many-body systems. It is relevant to a wide range of fields from condensed matter to astrophysics. The nature of pairing in strongly interacting Fermi gases can be readily studied. This aids our understanding of related problems in high-T{sub c} superconductors, whose mechanism is still under debate due to the large interaction parameter. Here, we calculate the dynamical properties of a normal, trapped strongly correlated Fermi gas, by developing a quantum cluster expansion. Our calculations for the single-particle spectral function agree with recent rf spectroscopy measurements, and clearly demonstrate pseudogap pairing in the strongly interacting regime.

Hu Hui; Liu Xiaji; Drummond, Peter D. [ARC Centre of Excellence for Quantum-Atom Optics and Centre for Atom Optics and Ultrafast Spectroscopy, Swinburne University of Technology, Melbourne 3122 (Australia); Dong Hui [ARC Centre of Excellence for Quantum-Atom Optics and Centre for Atom Optics and Ultrafast Spectroscopy, Swinburne University of Technology, Melbourne 3122 (Australia); Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080 (China)

2010-06-18T23:59:59.000Z

94

A search for resonant Z pair production  

SciTech Connect

I describe a search for anomalous production of Z pairs through a new massive resonance X in 2.5-2.9 fb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV using the CDFII Detector at the Fermilab Tevatron. I reconstruct Z pairs through their decays to electrons, muons, and quarks. To achieve perhaps the most efficient lepton reconstruction ever used at CDF, I apply a thorough understanding of the detector and new reconstruction software heavily revised for this purpose. In particular, I have designed and employ new general-purpose algorithms for tracking at large {eta} in order to increase muon acceptance. Upon analyzing the unblinded signal samples, I observe no X {yields} ZZ candidates and set upper limits on the production cross section using a Kaluza-Klein graviton-like acceptance.

Boveia, Antonio; /UC, Santa Barbara

2008-12-01T23:59:59.000Z

95

Heat capacity and pairing transition in nuclei  

E-Print Network (OSTI)

A simple model based on the canonical-ensemble theory is outlined for hot nuclei. The properties of the model are discussed with respect to the Fermi gas model and the breaking of Cooper pairs. The model describes well the experimental level density of deformed nuclei in various mass regions. The origin of the so-called S-shape of the heat capacity curve Cv(T) is discussed.

M. Guttormsen; M. Hjorth-Jensen; E. Melby; J. Rekstad; A. Schiller; S. Siem

2001-04-30T23:59:59.000Z

96

Simple, pulsed, polarisation entangled photon pair source  

E-Print Network (OSTI)

We report the realisation of a fibred polarisation entangled photon-pair source at 1560 nm based on a type-II non linear interaction and working in the picosecond regime. By taking advantage of a set of filters, we deterministically separate the photons and project them into wavelength separable states. A standard entanglement measurement with a net interference visibility close to 1, proves the relevance of our approach as an enabling technology for entanglement-based quantum communication.

N. Bruno; E. Zambrini Cruzeiro; A. Martin; R. T. Thew

2013-11-26T23:59:59.000Z

97

Pair Production in Rotating Electric Fields  

E-Print Network (OSTI)

We explore Schwinger pair production in rotating time-dependent electric fields using the real-time DHW formalism. We determine the time evolution of the Wigner function as well as asymptotic particle distributions neglecting back-reactions on the electric field. Whereas qualitative features can be understood in terms of effective Keldysh parameters, the field rotation leaves characteristic imprints in the momentum distribution that can be interpreted in terms of interference and multiphoton effects. These phenomena may seed characteristic features of QED cascades created in the antinodes of a high-intensity standing wave laser field.

Blinne, Alexander

2013-01-01T23:59:59.000Z

98

Pair Production in Rotating Electric Fields  

E-Print Network (OSTI)

We explore Schwinger pair production in rotating time-dependent electric fields using the real-time DHW formalism. We determine the time evolution of the Wigner function as well as asymptotic particle distributions neglecting back-reactions on the electric field. Whereas qualitative features can be understood in terms of effective Keldysh parameters, the field rotation leaves characteristic imprints in the momentum distribution that can be interpreted in terms of interference and multiphoton effects. These phenomena may seed characteristic features of QED cascades created in the antinodes of a high-intensity standing wave laser field.

Alexander Blinne; Holger Gies

2013-11-07T23:59:59.000Z

99

Stable optical vortex solitons in pair plasmas  

Science Conference Proceedings (OSTI)

It is shown that the pair plasmas with small temperature asymmetry can support existence of localized as well as delocalized optical vortex solitons. Coexistence of such solitons is possible due to peculiar form of saturating nonlinearity which has a focusing-defocusing nature--for weak amplitudes being focusing becoming defocusing for higher amplitudes. It is shown that delocalized vortex soliton is stable in entire region of its existence while single- and multicharged localized vortex solitons are unstable for low amplitudes and become stable for relativistic amplitudes.

Berezhiani, V. I.; Shatashvili, N. L. [Plasma Physics Department, Andronikashvili Institute of Physics, Tbilisi 0177 (Georgia); Department of Physics, Faculty of Exact and Natural Sciences, Javakhishvili Tbilisi State University, Tbilisi 0128 (Georgia); Mahajan, S. M. [Institute for Fusion Studies, University of Texas at Austin, Austin, Texas 78712 (United States)

2010-05-15T23:59:59.000Z

100

Boson-Fermion pairing in a Boson-Fermion environment  

E-Print Network (OSTI)

Propagation of a Boson-Fermion (B-F) pair in a B-F environment is considered. The possibility of formation of stable strongly correlated B-F pairs, embedded in the continuum, is pointed out. The new Fermi gas of correlated B-F pairs shows a strongly modified Fermi surface. The interaction between like particles is neglected in this exploratory study. Various physical situations where our new pairing mechanism could be of importance are invoked.

A. Storozhenko; P. Schuck; T. Suzuki; H. Yabu; J. Dukelsky

2005-04-10T23:59:59.000Z

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Efficient pairing computation on Elliptic curves in Hessian form  

Science Conference Proceedings (OSTI)

Pairings in elliptic curve cryptography are functions which map a pair of elliptic curve points to a non-zero element of a finite field. In recent years, many useful cryptographic protocols based on pairings have been proposed. The fast implementations ... Keywords: Elliptic curve, Hessian form, tate paring

Haihua Gu; Dawu Gu; WenLu Xie

2010-12-01T23:59:59.000Z

102

Brief paper: Branch and bound method for multiobjective pairing selection  

Science Conference Proceedings (OSTI)

Most of the available methods for selection of input-output pairings for decentralized control require evaluation of all alternatives to find the optimal pairings. As the number of alternatives grows rapidly with process dimensions, pairing selection ... Keywords: Computer-aided control system design, Decentralized control, Global optimization, Large-scale systems, Multiobjective optimizations, Relative gain array, Structured singular value

Vinay Kariwala; Yi Cao

2010-05-01T23:59:59.000Z

103

Method for sequencing DNA base pairs  

DOE Patents (OSTI)

The base pairs of a DNA structure are sequenced with the use of a scanning tunneling microscope (STM). The DNA structure is scanned by the STM probe tip, and, as it is being scanned, the DNA structure is separately subjected to a sequence of infrared radiation from four different sources, each source being selected to preferentially excite one of the four different bases in the DNA structure. Each particular base being scanned is subjected to such sequence of infrared radiation from the four different sources as that particular base is being scanned. The DNA structure as a whole is separately imaged for each subjection thereof to radiation from one only of each source. 6 figures.

Sessler, A.M.; Dawson, J.

1993-12-14T23:59:59.000Z

104

Improved method for sequencing DNA base pairs  

DOE Patents (OSTI)

The base pairs of a DNA structure are sequenced with the use of a scanning tunneling microscope (STM). The DNA structure is scanned by the STM probe tip, and, as it is being scanned, the DNA structure is separately subjected to a sequence of infrared radiation from four different sources, each source being selected to preferentially excite one of the four different bases in the DNA structure. Each particular base being scanned is subjected to such sequence of infrared radiation from the four different sources as that particular base is being scanned. The DNA structure as a whole is separately imaged for each subjection thereof to radiation from one only of each source. 1 ref.

Sessler, A.M.; Dawson, J.

1990-12-31T23:59:59.000Z

105

Improved method for sequencing DNA base pairs  

DOE Patents (OSTI)

The base pairs of a DNA structure are sequenced with the use of a scanning tunneling microscope (STM). The DNA structure is scanned by the STM probe tip, and, as it is being scanned, the DNA structure is separately subjected to a sequence of infrared radiation from four different sources, each source being selected to preferentially excite one of the four different bases in the DNA structure. Each particular base being scanned is subjected to such sequence of infrared radiation from the four different sources as that particular base is being scanned. The DNA structure as a whole is separately imaged for each subjection thereof to radiation from one only of each source. 1 ref.

Sessler, A.M.; Dawson, J.

1990-01-01T23:59:59.000Z

106

Cooper pairing near charged black holes  

E-Print Network (OSTI)

We show that a quartic contact interaction between charged fermions can lead to Cooper pairing and a superconducting instability in the background of a charged asymptotically Anti-de Sitter black hole. For a massless fermion we obtain the zero mode analytically and compute the dependence of the critical temperature T_c on the charge of the fermion. The instability we find occurs at charges above a critical value, where the fermion dispersion relation near the Fermi surface is linear. The critical temperature goes to zero as the marginal Fermi liquid is approached, together with the density of states at the Fermi surface. Besides the charge, the critical temperature is controlled by a four point function of a fermionic operator in the dual strongly coupled field theory.

Hartman, Thomas

2010-01-01T23:59:59.000Z

107

Cooper pairing near charged black holes  

E-Print Network (OSTI)

We show that a quartic contact interaction between charged fermions can lead to Cooper pairing and a superconducting instability in the background of a charged asymptotically Anti-de Sitter black hole. For a massless fermion we obtain the zero mode analytically and compute the dependence of the critical temperature T_c on the charge of the fermion. The instability we find occurs at charges above a critical value, where the fermion dispersion relation near the Fermi surface is linear. The critical temperature goes to zero as the marginal Fermi liquid is approached, together with the density of states at the Fermi surface. Besides the charge, the critical temperature is controlled by a four point function of a fermionic operator in the dual strongly coupled field theory.

Thomas Hartman; Sean A. Hartnoll

2010-03-09T23:59:59.000Z

108

Nucleic Acid Standards | Base Pair Geometry  

NLE Websites -- All DOE Office Websites (Extended Search)

A Standard Reference Frame for the Description A Standard Reference Frame for the Description of Nucleic Acid Base-pair Geometry Table 1. Cartesian coordinates of non-hydrogen atoms in the standard reference frames of the five common nitrogenous bases Atom Base x(Å) y(Å) z(Å) Adenine ATOM 1 C1' A A 1 -2.479 5.346 0.000 ATOM 2 N9 A A 1 -1.291 4.498 0.000 ATOM 3 C8 A A 1 0.024 4.897 0.000 ATOM 4 N7 A A 1 0.877 3.902 0.000 ATOM 5 C5 A A 1 0.071 2.771 0.000 ATOM 6 C6 A A 1 0.369 1.398 0.000 ATOM 7 N6 A A 1 1.611 0.909 0.000 ATOM 8 N1 A A 1 -0.668 0.532 0.000 ATOM 9 C2 A A 1 -1.912 1.023 0.000 ATOM 10 N3 A A 1 -2.320 2.290 0.000

109

A Bell pair in a generic random matrix environment  

E-Print Network (OSTI)

Two non-interacting qubits are coupled to an environment. Both coupling and environment are represented by random matrix ensembles. The initial state of the pair is a Bell state, though we also consider arbitrary pure states. Decoherence of the pair is evaluated analytically in terms of purity; Monte Carlo calculations confirm these results and also yield the concurrence of the pair. Entanglement within the pair accelerates decoherence. Numerics display the relation between concurrence and purity known for Werner states, allowing us to give a formula for concurrence decay.

Carlos Pineda; Thomas H. Seligman

2006-05-18T23:59:59.000Z

110

Correlated photon pairs generated from a warm atomic ensemble  

E-Print Network (OSTI)

We present measurements of the cross-correlation function of photon pairs at 780 nm and 1367 nm, generated in a hot rubidium vapor cell. The temporal character of the biphoton is determined by the dispersive properties of the medium where the pair generation takes place. We show that short correlation times occur for optically thick samples, which can be understood in terms of off-resonant pair generation. By modifying the linear response of the sample, we produce near-resonant photon pairs, which could in principle be used for entanglement distribution.

Willis, R T; Orozco, L A; Rolston, S L

2010-01-01T23:59:59.000Z

111

Correlated photon pairs generated from a warm atomic ensemble  

E-Print Network (OSTI)

We present measurements of the cross-correlation function of photon pairs at 780 nm and 1367 nm, generated in a hot rubidium vapor cell. The temporal character of the biphoton is determined by the dispersive properties of the medium where the pair generation takes place. We show that short correlation times occur for optically thick samples, which can be understood in terms of off-resonant pair generation. By modifying the linear response of the sample, we produce near-resonant photon pairs, which could in principle be used for entanglement distribution.

R. T. Willis; F. E. Becerra; L. A. Orozco; S. L. Rolston

2010-11-11T23:59:59.000Z

112

Pairing: from atomic nuclei to neutron-star crusts  

E-Print Network (OSTI)

Nuclear pairing is studied both in atomic nuclei and in neutron-star crusts in the unified framework of the energy-density functional theory using generalized Skyrme functionals complemented with a local pairing functional obtained from many-body calculations in homogeneous nuclear matter using realistic forces.

Chamel, N; Goriely, S

2013-01-01T23:59:59.000Z

113

High speed flexible pairing cryptoprocessor on FPGA platform  

Science Conference Proceedings (OSTI)

This paper presents a Pairing Crypto Processor (PCP) over Barreto-Naehrig curves (BN curves). The proposed architecture is specifically designed for field programmable gate array (FPGA) platforms. The design of PCP utilizes the efficient implementation ... Keywords: Barreto-Naehrig curves, Fpk-arithmetic, FPGA, ellipticcurve cryptography (ECC), pairing-based cryptography

Santosh Ghosh; Debdeep Mukhopadhyay; Dipanwita Roychowdhury

2010-12-01T23:59:59.000Z

114

Hindi paired word recognition using probabilistic neural network  

Science Conference Proceedings (OSTI)

Automatic speech recognition has been a subject of active research interest since last few decades. In the present paper, spoken Hindi (Indian national language) Paired Word Recognition (HPWR) has been examined with the help of intelligent ... Keywords: HPWR, Hindi, PNN, automatic speech recognition, broad acoustic classes, classification, hybrid computing, paired word recognition, pattern recognition, probabilistic neural networks, wavelet transforms

Dinesh Kumar Rajoriya; R. S. Anand; R. P. Maheshwari

2010-08-01T23:59:59.000Z

115

LCPHSM2004006 Study of Higgs Boson Pair Production at  

E-Print Network (OSTI)

LC­PHSM­2004­006 March 2004 Study of Higgs Boson Pair Production at Linear Collider K. Desch a , TV for the measurement of the neutral Higgs boson properties within the framework of the MSSM. The process of associated Higgs boson production with subsequent decays of Higgs bosons into b­quark and #­lepton pairs

116

LCPHSM2004005 Study of Higgs Boson Pair Production at  

E-Print Network (OSTI)

LC­PHSM­2004­005 March 2004 Study of Higgs Boson Pair Production at Linear Collider K. Desch a , TV for the measurement of the neutral Higgs boson properties within the framework of the MSSM. The process of associated Higgs boson production with subsequent decays of Higgs bosons into b­quark and #­lepton pairs

117

Exceptional Lie Algebras, SU(3) and Jordan Pairs  

E-Print Network (OSTI)

A simple unifying view of the exceptional Lie algebras is presented. The underlying Jordan pair content and role are exhibited. Each algebra contains three Jordan pairs sharing the same Lie algebra of automorphisms and the same external su(3) symmetry. Eventual physical applications and implications of the theory are outlined.

Piero Truini

2011-12-06T23:59:59.000Z

118

Template:LabelValuePair | Open Energy Information  

Open Energy Info (EERE)

LabelValuePair LabelValuePair Jump to: navigation, search This is the 'LabelValuePair' template. It is typically used to display the results of an ask or sparql query in a simple label: value format. It is used by many pages, including the sub pages for country profiles, and is most frequently called as the template parameter in a query returned as format=template. For more help on this, see Extension:SparqlExtension, Template Help. Parameters label - The label, property or predicate of the query. value - The value or object specified in the query. Usage It should be called in the following format: {{#sparql SELECT ... |format=template |template=LabelValuePair |.. }} Edit the page to see the template text. Retrieved from "http://en.openei.org/w/index.php?title=Template:LabelValuePair&oldid=37488

119

Inflation of the screening length induced by Bjerrum pairs  

E-Print Network (OSTI)

Within a modified Poisson-Boltzmann theory we study the effect of Bjerrum pairs on the typical length scale $1/\\bar{\\kappa}$ over which electric fields are screened in electrolyte solutions, taking into account a simple association-dissociation equilibrium between free ions and Bjerrum pairs. At low densities of Bjerrum pairs, this length scale is well approximated by the Debye length $1/\\kappa\\propto 1/\\sqrt{\\rho_\\mathrm{s}}$, with $\\rho_\\mathrm{s}$ the free ion density. At high densities of Bjerrum pairs, however, we find $1/\\bar{\\kappa}\\propto \\sqrt{\\rho_\\mathrm{s}}$ which is significantly larger than $1/\\kappa$ due to the enhanced effective permittivity of the electrolyte, caused by the polarization of Bjerrum pairs. We argue that this mechanism may explain the recently observed anomalously large colloid-free zones between an oil-dispersed colloidal crystal and a colloidal monolayer at the oil-water interface.

Jos Zwanikken; Ren van Roij

2009-05-12T23:59:59.000Z

120

QED peripheral mechanism of pair production at colliders  

Science Conference Proceedings (OSTI)

Cross sections of the processes of production of neutral pions and pairs of charged fermions and bosons in peripheral interaction of leptons and photons are calculated in the main logarithmic approximation. We investigate the phase volumes and differential cross sections. The differential cross sections of production of a few neutral pions and a few pairs are written down explicitly. Considering the academic problem of summation over a number of pairs for massless particles we reproduce the known results obtained in the 1970s. The possibility of constructing the generator for Monte Carlo modeling of these processes based on these results is discussed.

Ahmadov, A. I.; Galynskii, M. V.; Bystritskiy, Yu. M.; Kuraev, E. A.; Shatnev, M. G. [Joint Institute for Nuclear Research, Dubna, Russia, and Institute of Physics, Azerbaijan National Academy of Sciences, Baku (Azerbaijan); Institute of Physics, Minsk (Belarus); Joint Institute for Nuclear Research, Dubna (Russian Federation); Kharkov Institute of Physics and Technology, Kharkov, 61108 (Ukraine)

2008-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Photon-pair generation in random nonlinear layered structures  

E-Print Network (OSTI)

Nonlinearity and sharp transmission spectra of random 1D nonlinear layered structures are combined together to produce photon pairs with extremely narrow spectral bandwidths. Indistinguishable photons in a pair are nearly unentangled. Also two-photon states with coincident frequencies can be conveniently generated in these structures if photon pairs generated into a certain range of emission angles are superposed. If two photons are emitted into two different resonant peaks, the ratio of their spectral bandwidths may differ considerably from one and two photons remain nearly unentangled.

Jan Perina Jr; Marco Centini; Concita Sibilia; Mario Bertolotti

2009-08-25T23:59:59.000Z

122

Phase space evolution of pairs created in strong electric fields  

E-Print Network (OSTI)

We study the process of energy conversion from overcritical electric field into electron-positron-photon plasma. We solve numerically Vlasov-Boltzmann equations for pairs and photons assuming the system to be homogeneous and anisotropic. All the 2-particle QED interactions between pairs and photons are described by collision terms. We evidence several epochs of this energy conversion, each of them associated to a specific physical process. Firstly pair creation occurs, secondly back reaction results in plasma oscillations. Thirdly photons are produced by electron-positron annihilation. Finally particle interactions lead to completely equilibrated thermal electron-positron-photon plasma.

Benedetti, Alberto; Vereshchagin, Gregory; 10.1016/j.physleta.2012.11.026

2013-01-01T23:59:59.000Z

123

General heart construction for twin torsion pairs on triangulated categories  

E-Print Network (OSTI)

In our previous article, we constructed an abelian category from any torsion pair on a triangulated category. This generalizes the heart of a $t$-structure and the ideal quotient by a cluster tilting subcategory. Recently, generalizing the quotient by a cluster tilting subcategory, Buan and Marsh showed that an integral preabelian category can be constructed as a quotient, from a rigid object in a triangulated category with some conditions. In this article, by considering a pair of torsion pairs, we make a simultaneous genralization of these two constructions.

Nakaoka, Hiroyuki

2011-01-01T23:59:59.000Z

124

Microsoft Word - RIN 07040836 DocProd.doc  

Office of Legacy Management (LM)

page intentionally left blank page intentionally left blank U.S. Department of Energy DVPMay 2007, Gunnison, Colorado, Processing Site August 2007 RIN 07040836 Page iii Contents Sampling Event Summary ...............................................................................................................1 Gunnison, Colorado, Processing Site Sample Location Map ..........................................................3

125

Microsoft Word - RIN 06110582_DocProd.doc  

Office of Legacy Management (LM)

448 448 2007 - - U.S. Department of Energy Office of Legacy Management Work Performed by the S.M. Stoller Corporation Under DOE Contract No. for the U.S. Department of Energy Office of Legacy Management. Approved for public release; distribution is unlimited. DE-AC01-02GJ79491 December 2006, Monument Valley, Arizona This page intentionally left blank U.S. Department of Energy DVP⎯December 2006, Monument Valley, Arizona March 2007 RIN 06110582 Page iii Contents Sampling Event Summary ...............................................................................................................1 Sample Locations at Monument Valley, Arizona, Processing Site .................................................3 Data Assessment Summary..............................................................................................................5

126

Microsoft Word - RIN 08061655 DocProd.doc  

Office of Legacy Management (LM)

8 8 Groundwater Sampling at the Monument Valley, Arizona, Processing Site November 2008 LMS/MON/S00608 This page intentionally left blank U.S. Department of Energy DVP-June 2008, Monument Valley, Arizona, Processing Site November 2008 RIN 08061655 Page i Contents Sampling Event Summary ...............................................................................................................1 Monument Valley, Arizona, Processing Site Sample Locations .....................................................3 Data Assessment Summary..............................................................................................................5 Water Sampling Field Activities Verification Checklist .............................................................7

127

Prod ucing Results in NanotechnologyToda - TMS  

Science Conference Proceedings (OSTI)

Nanotechnology Initiative: Engine for Innovation and. Competitiveness by Celia Merzbacher,. Assistant Director for Technology R&D,. Office of Science and.

128

The ProD framework for proactive displays  

Science Conference Proceedings (OSTI)

A proactive display is an application that selects content to display based on the set of users who have been detected nearby. For example, the Ticket2Talk [17] proactive display application presented content for users so that other people would know ... Keywords: audience-awareness, awareness, collaborative systems, cscw, pervasive computing, proactive displays, public displays, software framework, ubiquitous computing

Ben Congleton; Mark S. Ackerman; Mark W. Newman

2008-10-01T23:59:59.000Z

129

Prod. of Oil, Gas & Coal - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Production of oil, gas, and coal. Projected supply and disposition of crude oil. The model now uses the EIAs projections of production, imports, and consumption of ...

130

Microsoft Word - 08041519_08051593_DocProd.doc  

Office of Legacy Management (LM)

LMSGUPS04641 U.S. Department of Energy Office of Legacy Management Work Performed by the S.M. Stoller Corporation Under DOE Contract No. for the U.S. Department of Energy Office...

131

Microsoft Word - RIN 07081119 DocProd.doc  

Office of Legacy Management (LM)

585 2008 - - U.S. Department of Energy Office of Legacy Management Work Performed by the S.M. Stoller Corporation Under DOE Contract No. for the U.S. Department of Energy Office of...

132

Microsoft Word - RIN 08071743 DocProd.doc  

Office of Legacy Management (LM)

is to be expected as selenium levels are typically elevated in sediments of the Mancos Shale in the area. * No large variations in sulfate concentrations have been observed since...

133

Squark pair production in the MSSM with explicit CP violation  

Science Conference Proceedings (OSTI)

We analyze effects of the CP-odd soft phases in the MSSM on the pair productions of colored superpartners in pp collisions at the LHC energies. We find that, among all pair-production processes, those of the scalar quarks in the first and second generations are particularly sensitive to the CP-odd phases, more precisely, to the phases of the gluinos and neutralinos. We compute pair-production cross sections, classify various production modes according to their dependencies on the gluino and neutralino phases, perform a detailed numerical analysis to determine individual as well as total cross sections, and give a detailed discussion of 2. electric dipole moment (EDM) bounds. We find that pair productions of first and second generation squarks serve as a viable probe of the CP violation sources in the gaugino sector of the theory even if experiments cannot determine chirality, flavor and electric charge of the squarks produced.

Alan, Ahmet T. [Department of Physics, Abant Izzet Baysal University, TR14280 (Turkey); Cankocak, Kerem [Department of Physics, Mugla University, TR48000 (Turkey); Demir, Durmus A. [Department of Physics, Izmir Institute of Technology, IZTECH, TR35430 (Turkey)

2007-05-01T23:59:59.000Z

134

Electron-positron pairs production in a macroscopic charged core  

E-Print Network (OSTI)

Classical and semi-classical energy states of relativistic electrons bounded by a massive and charged core with the charge-mass-radio Q/M and macroscopic radius R_c are discussed. We show that the energies of semi-classical (bound) states can be much smaller than the negative electron mass-energy (-mc^2), and energy-level crossing to negative energy continuum occurs. Electron-positron pair production takes place by quantum tunneling, if these bound states are not occupied. Electrons fill into these bound states and positrons go to infinity. We explicitly calculate the rate of pair-production, and compare it with the rates of electron-positron production by the Sauter-Euler-Heisenberg-Schwinger in a constant electric field. In addition, the pair-production rate for the electro-gravitational balance ratio Q/M = 10^{-19} is much larger than the pair-production rate due to the Hawking processes.

Ruffini, Remo

2011-01-01T23:59:59.000Z

135

Electron-positron pairs production in a macroscopic charged core  

E-Print Network (OSTI)

Classical and semi-classical energy states of relativistic electrons bounded by a massive and charged core with the charge-mass-radio Q/M and macroscopic radius R_c are discussed. We show that the energies of semi-classical (bound) states can be much smaller than the negative electron mass-energy (-mc^2), and energy-level crossing to negative energy continuum occurs. Electron-positron pair production takes place by quantum tunneling, if these bound states are not occupied. Electrons fill into these bound states and positrons go to infinity. We explicitly calculate the rate of pair-production, and compare it with the rates of electron-positron production by the Sauter-Euler-Heisenberg-Schwinger in a constant electric field. In addition, the pair-production rate for the electro-gravitational balance ratio Q/M = 10^{-19} is much larger than the pair-production rate due to the Hawking processes.

Remo Ruffini; She-Sheng Xue

2011-06-24T23:59:59.000Z

136

Evolution of Fermion Pairing from Three to Two Dimensions  

E-Print Network (OSTI)

We follow the evolution of fermion pairing in the dimensional crossover from three-dimensional to two-dimensional as a strongly interacting Fermi gas of [superscript 6]Li atoms becomes confined to a stack of two-dimensional ...

Sommer, Ariel Tjodolv

137

Scaling quark gluon plasma by HBT interferometry with lepton pairs  

E-Print Network (OSTI)

We study the intensity interferometry with lepton pairs for nuclear collisions at RHIC and LHC energies. It is argued that the invariant mass dependence of HBT radii extracted from the correlation functions of dilepton pairs can be used as an efficient tool to scale the size and life time of the quark gluon plasma expected to be formed in nuclear collisions at RHIC and LHC. Quantitatively different magnitudes of HBT radii are obtained at RHIC and LHC indicating stronger radial flow at LHC.

Payal Mohanty; Jan-e Alam

2012-02-10T23:59:59.000Z

138

Threshold energy surface and Frenkel-pair resistivity for Cu  

Science Conference Proceedings (OSTI)

In-situ electrical resistivity damage-rate measurements in the high voltage electron microscope have been used to study electron-irradiation-induced defect production in copper single crystals at T and surrounded by regions of much higher threshold energy. The corresponding damage function exhibits a plateau of 0.6 Frenkel pairs. the present results imply a Frenkel pair resistivity for C of (2.75/sub -0.2//sup +0.6/) x ..cap omega..-cm.

King, W.E.; Merkle, K.L.; Meshii, M.

1982-01-01T23:59:59.000Z

139

Photon Splitting and Pair Conversion in Strong Magnetic Fields  

E-Print Network (OSTI)

The magnetospheres of neutron stars provide a valuable testing ground for as-yet unverified theoretical predictions of quantum electrodynamics (QED) in strong electromagnetic fields. Exhibiting magnetic field strengths well in excess of a TeraGauss, such compact astrophysical environments permit the action of exotic mechanisms that are forbidden by symmetries in field-free regions. Foremost among these processes are single-photon pair creation, where a photon converts to an electron-positron pair, and magnetic photon splitting, where a single photon divides into two of lesser energy via the coupling to the external field. The pair conversion process is exponentially small in weak fields, and provides the leading order contribution to vacuum polarization. In contrast, photon splitting possesses no energy threshold and can operate in kinematic regimes where the lower order pair conversion is energetically forbidden. This paper outlines some of the key physical aspects of these processes, and highlights their manifestation in neutron star magnetospheres. Anticipated observational signatures include profound absorption turnovers in pulsar spectra at gamma-ray wavelengths. The shapes of these turnovers provide diagnostics on the possible action of pair creation and the geometrical locale of the photon emission region. There is real potential for the first confirmation of strong field QED with the new GLAST mission, to be launched by NASA in 2008. Suppression of pair creation by photon splitting and its implications for pulsars is also discussed.

Matthew G. Baring

2008-04-05T23:59:59.000Z

140

Enhanced Schwinger's pair production in many-center systems  

E-Print Network (OSTI)

Electron-positron pair production is considered for many-center systems with multiple bare nuclei immersed in a constant electric field. It is shown that there are two distinct regimes where the pair production rate is enhanced. At small interatomic distance, the effective charge of the nuclei approaches the critical charge where the ground state dives into the negative continuum. This facilitates the transition from the negative to the positive energy states, which in turns, increases the pair production rate. At larger atomic distance, the enhancement is due to the crossing of resonances and the pair production proceeds by the Resonantly Enhanced Pair Production (REPP) mechanism. These processes are studied within a simple one-dimensional model. A numerical method is developed to evaluate the transmission coefficient in relativistic quantum mechanics, which is required in the calculation of the pair production rate. The latter is evaluated for systems with many (up to five) nuclei. It is shown that the production rate for many-center systems can reach a few orders of magnitude above Schwinger's tunnelling result in a static field.

Franois Fillion-Gourdeau; Emmanuel Lorin; Andr D. Bandrauk

2013-05-24T23:59:59.000Z

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

e+e- pair production from 10 GeV to 10 ZeV  

E-Print Network (OSTI)

e + e ? Pair Production from 10 GeV to 10 ZeV Spencer R.very high energies, pair production (? ? e + e ? ) exhibitsatoms reduces the pair production cross section considerably

Klein, Spencer R.

2004-01-01T23:59:59.000Z

142

Schwinger pair production in AdS2  

E-Print Network (OSTI)

We analyze the pair production of charged particles in two-dimensional Anti-de Sitter space (AdS_2) with a constant, uniform electric field. We compute the production rate both at a semi-classical level, viewing Schwinger pair production as a tunneling event, and at the full quantum level, by extracting the imaginary part of the one-loop amplitude. In contrast to the usual Schwinger pair production in flat space, pair production in AdS_2 requires a sufficiently large electric field E^2> M^2+1/4 in order to overcome the confining effect of the AdS geometry -- put in another way, the presence of an electric field E raises the Breitenlohner-Freedman bound to M^2 > -1/4 + E^2. For E greater than this threshold, the vacuum is unstable to production of charged pairs in the bulk. We expect our results to be helpful in constructing supersymmetric AdS_2 X S^2 perturbative string vacua, which enter in the near-horizon limit of extremal charged black holes. Although the generalized Breitenlohner-Freedman bound is obeyed in these cases, production of BPS particles at threshold is possible and relevant for AdS_2 fragmentation.

B. Pioline; J. Troost

2005-01-20T23:59:59.000Z

143

Energy Efficiency and Fitness - A Complementary Pair | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Efficiency and Fitness - A Complementary Pair Efficiency and Fitness - A Complementary Pair Energy Efficiency and Fitness - A Complementary Pair June 23, 2011 - 4:15pm Addthis Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs I recently read about a study on fidgeting or as researchers refer to it-incidental physical activity. The study shows that the small collection of movements we often find inconsequential-like drumming your fingers, tapping your foot, or running after the bus-have significant health and cardiovascular benefits. The more I thought about it the more I realized that many everyday activities that contribute to overall fitness turn out to be quite energy-efficient and environmentally friendly as well. Take my commute for instance-every weekday I cram my way into a crowded

144

Energy Efficiency and Fitness - A Complementary Pair | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy Efficiency and Fitness - A Complementary Pair Energy Efficiency and Fitness - A Complementary Pair Energy Efficiency and Fitness - A Complementary Pair June 23, 2011 - 4:15pm Addthis Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs I recently read about a study on fidgeting or as researchers refer to it-incidental physical activity. The study shows that the small collection of movements we often find inconsequential-like drumming your fingers, tapping your foot, or running after the bus-have significant health and cardiovascular benefits. The more I thought about it the more I realized that many everyday activities that contribute to overall fitness turn out to be quite energy-efficient and environmentally friendly as well. Take my commute for instance-every weekday I cram my way into a crowded

145

Mixed-Spin Pairing Condensates in Heavy Nuclei  

Science Conference Proceedings (OSTI)

We show that the Bogoliubov-de Gennes equations for nuclear ground-state wave functions support solutions in which the condensate has a mixture of spin-singlet and spin-triplet pairing. We find that such mixed-spin condensates do not occur when there are equal numbers of neutrons and protons, but only when there is an isospin imbalance. Using a phenomenological Hamiltonian, we predict that such nuclei may occur in the physical region within the proton dripline. We also solve the Bogoliubov-de Gennes equations with variable constraints on the spin-singlet and spin-triplet pairing amplitudes. For nuclei that exhibit this new pairing behavior, the resulting energy surface can be rather soft, suggesting that there may be low-lying excitations associated with the spin mixing.

Gezerlis, Alexandros; Luo, Y. L. [Department of Physics, University of Washington, Seattle, Washington 98195-1560 (United States); Bertsch, G. F. [Department of Physics, University of Washington, Seattle, Washington 98195-1560 (United States); Institute for Nuclear Theory, University of Washington, Seattle, Washington 98195-1560 (United States)

2011-06-24T23:59:59.000Z

146

Pair correlations of an expanding superfluid Fermi gas  

E-Print Network (OSTI)

The pair correlation function of an expanding gas is investigated with an emphasis on the BEC-BCS crossover of a superfluid Fermi gas at zero temperature. At unitarity quantum Monte Carlo simulations reveal the occurrence of a sizable bunching effect due to interactions in the spin up-down channel which, at short distances, is larger than that exhibited by thermal bosons in the Hanbury-Brown and Twiss effect. We propose a local equilibrium ansatz for the pair correlation function which we predict will remain isotropic during the expansion even if the trapping potential is anisotropic, contrary to what happens for non-interacting gases. This behavior is understood to be a consequence of the violation of scaling of the pair correlation function due to interactions.

C. Lobo; I. Carusotto; S. Giorgini; A. Recati; S. Stringari

2006-04-11T23:59:59.000Z

147

Semiclassical calculation of photon-stimulated Schwinger pair creation  

Science Conference Proceedings (OSTI)

We consider the electron-positron pair creation by a photon in an external constant electric field. The presented treatment is based on a purely quasiclassical calculation of the imaginary part of the on-shell photon polarization operator. By using this approach we find the pair production rate for photons with polarization parallel as well as orthogonal to the external electric field in the leading order in the parameter eE/m{sup 2}, which has been recently found by other methods. For the orthogonal polarization we also find a new contribution to the rate, which is leading in the ratio of the photon energy to the electron mass {omega}/m. We also reproduce by a purely geometrical calculation the exponential factor in the probability of the stimulated pair creation at arbitrary energy of the photon.

Monin, A.; Voloshin, M. B. [School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (United States); William I. Fine Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

2010-04-15T23:59:59.000Z

148

LSP sneutrino decays into heavy standard model pairs  

E-Print Network (OSTI)

In bilinear R-parity violation (BRpV), in which the superpotential includes a bilinear term between the lepton doublet and the up-type Higgs superfields, a sneutrino LSP can decay into pairs of heavy standard model states: W's, Z's, tops or Higgs bosons. These finals states can dominate over the traditionally considered bottom pair final state. This would lead to unique and novel supersymmetric signals with each supersymmetric event possibly producing two pairs of these heavy standard model fields. We investigate this possibility and find that the branching ratio into heavier states dominates when the bilinear term is much smaller than the sneutrino vacuum expectation value for a given sneutrino flavor. When BRpV is the only source of neutrino masses these decays can only dominate for one of the sneutrino generations. Relaxing this constraint opens these channels for all three generations.

D. Aristizabal Sierra; D. Restrepo; S. Spinner

2012-12-13T23:59:59.000Z

149

Search for Squeezed-Pair Correlations at RHIC  

E-Print Network (OSTI)

Squeezed correlations of particle-antiparticle pairs, also called Back-to-Back Correlations, are predicted to appear if the hadron masses are modified in the hot and dense hadronic medium formed in high energy nucleus-nucleus collisions. Although well-established theoretically, the squeezed-particle correlations have not yet been searched for experimentally in high energy hadronic or heavy ion collisions, clearly requiring optimized forms to experimentally search for this effect. Within a non-relativistic treatment developed earlier we show that one promising way to search for the BBC signal is to look into the squeezed correlation function of pairs of phi-mesons at RHIC energies, plotted in terms of the average momentum of the pair, K12=(k1+k2)/2. This variable's modulus, 2|K12|, is the non-relativistic limit of the variable Q_bbc, introduced herewith. The squeezing effects on the HBT correlation function are also discussed.

Sandra S. Padula; O. Socolowski Jr.; T. Csorgo; M. I. Nagy

2008-05-02T23:59:59.000Z

150

Entanglement dynamics of photon pairs emitted from quantum dots  

Science Conference Proceedings (OSTI)

We present a model that describes states of photon pairs, which have been generated by biexciton cascade decays of self-assembled quantum dots, the use of which yields a finding that agrees well with the experimental result. Furthermore, we calculate the concurrence and determine the temperature behavior associated with the so-called entanglement sudden death that prevents quantum dots emitting entangled photon pairs at raised temperatures. The relationship between the fine-structure splitting and the sudden death temperature is also provided.

Zou, Yang; Gong, Ming; Li, Chuan-Feng; Chen, Geng; Tang, Jian-Shun; Guo, Guang-Can [Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei 230026 (China)

2010-06-15T23:59:59.000Z

151

Muon Bremsstrahlung and Muonic Pair Production in Air Showers  

E-Print Network (OSTI)

The objective of this work is to report on the modifications in air shower development due to muon bremsstrahlung and muonic pair production. In order to do that we have implemented new muon bremsstrahlung and muonic pair production procedures in the AIRES air shower simulation system, and have used it to simulate ultra high energy showers in different conditions. The influence of the mentioned processes in the global development of the air shower is important for primary particles of large zenith angles, while they do not introduce significant changes in the position of the shower maximum.

A. Cillis; S. J. Sciutto

2000-06-08T23:59:59.000Z

152

Magnetic moments of T=3/2 mirror pairs  

Science Conference Proceedings (OSTI)

We predict values of the magnetic moments of T=3/2 proton-rich fp-shell nuclei in the mass range A=43-53, by using known values for their neutron-rich mirrors together with shell-model estimates for small quantities. We extend the analysis to those T=3/2 sd-shell mirror pairs for which both the T{sub z}=-3/2 and T{sub z}=+3/2 magnetic moments have been measured. We find that these obey the same linear relation as previously deduced for T=1/2 mirror pairs.

Perez, S. M. [Department of Physics, University of Cape Town, Private Bag, Rondebosch 7700 (South Africa); iThemba LABS, P. O. Box 722, Somerset West 7129 (South Africa); Richter, W. A. [Department of Physics, University of the Western Cape, Private Bag X17, Bellville 7535 (South Africa); Brown, B. A. [Department of Physics and Astronomy, and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321 (United States); Horoi, M. [Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859 (United States)

2010-12-15T23:59:59.000Z

153

Counting the number of correlated pairs in a nucleus  

E-Print Network (OSTI)

We suggest that the number of correlated nucleon pairs in an arbitrary nucleus can be estimated by counting the number of proton-neutron, proton-proton, and neutron-neutron pairs residing in a relative $S$ state. We present numerical calculations of those amounts for the nuclei $^{4}$He, $^{9}$Be, $ ^{12}$C, $ ^{27}$Al, $ ^{40}$Ca, $ ^{48}$Ca, $ ^{56}$Fe, $ ^{63}$Cu, $ ^{108}$Ag, and $ ^{197}$Au. The results are used to predict the values of the ratios of the per-nucleon electron-nucleus inelastic scattering cross section to the deuteron in the kinematic regime where correlations dominate.

Maarten Vanhalst; Wim Cosyn; Jan Ryckebusch

2011-05-05T23:59:59.000Z

154

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Methane based) ZA 0.54993 E GeV b brems b pair b nucl b tot 2. 0.2587 0.1125 0.4738 0.8450 5. 0.3510 0.2787 0.5012 1.1309 10. 0.4276 0.4232 0.4859 1.3367 20. 0.5086 0.5806...

155

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Compact bone (ICRU) ZA 0.53010 E GeV b brems b pair b nucl b tot 2. 0.3535 0.1593 0.4614 0.9742 5. 0.4801 0.3928 0.4889 1.3618 10. 0.5841 0.5875...

156

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Lithium tetraborate Li 2 B 4 O 7 ZA gcm 3 I eV a k m s x 0 x 1 C 0 0.48487 2.440 94.6 0.11075 3.4389 0.0737 2.6502 3.2093 0.00 T p Ionization Brems Pair...

157

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Sodium nitrate NaNO 3 ZA 0.49415 E GeV b brems b pair b nucl b tot 2. 0.3298 0.1482 0.4566 0.9346 5. 0.4470 0.3631 0.4840 1.2941 10. 0.5431...

158

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Chlorine gas (Cl 2 ), Z 17, A 35.453(2) E GeV b brems b pair b nucl b tot 2. 0.5866 0.2765 0.4289 1.2920 5. 0.7980 0.6769 0.4568 1.9317 10....

159

Table  

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b(E) 10 6 cm 2 g -1 for Liquid chlorine (Cl 2 ), Z 17, A 35.453(2) E GeV b brems b pair b nucl b tot 2. 0.5866 0.2765 0.4289 1.2920 5. 0.7980 0.6769 0.4568 1.9317 10....

160

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Plutonium, Z 94, A 244.06420(4) E GeV b brems b pair b nucl b tot 2. 2.1316 0.2707 0.3572 2.7595 5. 2.9643 1.9434 0.3812 5.2888 10. 3.6451...

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161

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Plutonium dioxide (PuO 2 ) ZA 0.40583 E GeV b brems b pair b nucl b tot 2. 1.9169 0.2552 0.3693 2.5414 5. 2.6644 1.7544 0.3937 4.8124 10. 3.2756...

162

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Technetium, Z 43, A 97.90722(3) E GeV b brems b pair b nucl b tot 2. 1.2093 0.5181 0.3896 2.1169 5. 1.6623 1.4129 0.4163 3.4915 10. 2.0305...

163

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Technetium Z A gmol gcm 3 I eV a k m s x 0 x 1 C 0 43 (Tc) 97.90722 (3) 11.500 428.0 0.16572 2.9738 0.0949 3.1253 4.7769 0.14 T p Ionization Brems Pair...

164

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Benzene C 6 H 6 ZA 0.53769 E GeV b brems b pair b nucl b tot 2. 0.2319 0.0995 0.4765 0.8079 5. 0.3146 0.2475 0.5035 1.0656 10. 0.3835 0.3777...

165

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Butane (C 4 H 10 ) ZA 0.59497 E GeV b brems b pair b nucl b tot 2. 0.2191 0.0928 0.4841 0.7961 5. 0.2977 0.2326 0.5114 1.0417 10. 0.3637 0.3582...

166

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons in Thorium Z A gmol gcm 3 I eV a k m s x 0 x 1 C 0 90 (Th) 232.03806 (2) 11.720 847.0 0.08655 3.2610 0.4202 3.7681 6.2473 0.14 T p Ionization Brems Pair...

167

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Thorium, Z 90, A 232.03806(2) E GeV b brems b pair b nucl b tot 2. 2.0665 0.3212 0.3589 2.7466 5. 2.8718 1.9386 0.3831 5.1934 10. 3.5299 3.1965...

168

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Liquid propane (C 3 H 8 ) ZA 0.58962 E GeV b brems b pair b nucl b tot 2. 0.2179 0.0921 0.4849 0.7949 5. 0.2961 0.2311 0.5122 1.0394 10. 0.3618...

169

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Propane (C 3 H 8 ) ZA 0.58962 E GeV b brems b pair b nucl b tot 2. 0.2179 0.0921 0.4849 0.7949 5. 0.2961 0.2311 0.5122 1.0394 10. 0.3618 0.3563...

170

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Tissue-equivalent gas (Propane based) ZA 0.55027 E GeV b brems b pair b nucl b tot 2. 0.2506 0.1085 0.4751 0.8342 5. 0.3400 0.2692 0.5024 1.1116...

171

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Rhenium, Z 75, A 186.207(1) E GeV b brems b pair b nucl b tot 2. 1.8307 0.4713 0.3667 2.6686 5. 2.5366 1.8861 0.3916 4.8143 10. 3.1125 2.9839...

172

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Carbon (graphite), Z 6, A 12.0107(8) E GeV b brems b pair b nucl b tot 2. 0.2422 0.1049 0.4703 0.8175 5. 0.3282 0.2595 0.4971 1.0848 10. 0.3994...

173

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Carbon (amorphous), Z 6, A 12.0107(8) E GeV b brems b pair b nucl b tot 2. 0.2422 0.1049 0.4703 0.8175 5. 0.3282 0.2595 0.4971 1.0848 10. 0.3994...

174

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Carbon (compact), Z 6, A 12.0107(8) E GeV b brems b pair b nucl b tot 2. 0.2422 0.1049 0.4703 0.8175 5. 0.3282 0.2595 0.4971 1.0848 10. 0.3994...

175

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

b(E) 10 6 cm 2 g -1 for Carbon (gem diamond), Z 6, A 12.0107(8) E GeV b brems b pair b nucl b tot 2. 0.2422 0.1049 0.4703 0.8175 5. 0.3282 0.2595 0.4971 1.0848 10....

176

Screening of nuclear pairing in nuclear and neutron matter  

E-Print Network (OSTI)

The screening potential in the $^1S_0$ and $^3S_1$ pairing channels in neutron and nuclear matter in different approximations is discussed. It is found that the vertex corrections to the potential are much stronger in nuclear matter than in neutron matter.

Caiwan Shen; Umberto Lombardo; Peter Schuck

2005-03-03T23:59:59.000Z

177

Interpreting motion events of pairs of moving objects  

Science Conference Proceedings (OSTI)

When accumulating large quantities of positional data with ubiquitous positioning techniques, methods are required that can efficiently make use of these data. This work proposes a representation that approximates motion events of pairs of objects. It ... Keywords: Change in direction, Motion events/patterns, Spatiotemporal reasoning

Bjrn Gottfried

2011-04-01T23:59:59.000Z

178

Solar absorption refrigeration system using new working fluid pairs  

Science Conference Proceedings (OSTI)

Absorption refrigeration systems powered by solar energy increasingly attract research interests in the last years. In this study, thermodynamic analyses for different working fluid pairs are performed. A computer simulation model has been developed ... Keywords: NH3-LiNO3, absorption, crystallization, generator, performance, refrigeration, solar energy

Jasim M. Abdulateef; Kamaruzzaman Sopian; M. A. Alghoul; Mohd Yusof Sulaiman; Azami Zaharim; Ibrahim Ahmad

2008-02-01T23:59:59.000Z

179

Radiative proton-antiproton annihilation to a lepton pair  

Science Conference Proceedings (OSTI)

The annihilation of proton and antiproton to an electron-positron pair, including radiative corrections due to the emission of virtual and real photons is considered. The results are generalized to leading and next-to leading approximations. The relevant distributions are derived and numerical applications are given in the kinematical range accessible to the PANDA experiment at the FAIR facility.

Ahmadov, A. I. [Joint Institute for Nuclear Research, Dubna (Russian Federation); Institute of Physics, Azerbaijan National Academy of Sciences, Baku (Azerbaijan); Bytev, V. V.; Kuraev, E. A. [Joint Institute for Nuclear Research, Dubna (Russian Federation); Tomasi-Gustafsson, E. [CEA, IRFU, SPhN, Saclay, 91191 Gif-sur-Yvette Cedex, France, and CNRS/IN2P3, Institut de Physique Nucleaire, UMR 8608, 91405 Orsay (France)

2010-11-01T23:59:59.000Z

180

PAIR DISTRIBUTION FUNCTIONS OF BACTERIORHODOPSIN AND RHODOPSIN IN MODEL  

E-Print Network (OSTI)

information upon simple visual inspection. Recently methods have been devised to quantitate the distribution techniques (Donnell and Finegold, 1981; Pearson et al., 1979). In the present work we employ the pair distribution function (Perelson, 1978; Gershon et al., 1979; Markovics et al., 1974) to obtain a quantitative

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Singlet Free Energies of a Static Quark-Antiquark Pair  

E-Print Network (OSTI)

We study the singlet part of the free energy of a static quark anti-quark pair at finite temperature in three flavor QCD with degenerate quark masses using $N_{\\tau}=4$ and 6 lattices with Asqtad staggered fermion action. We look at thermodynamics of the system around phase transition and study its scaling with lattice spacing and quark masses.

Konstantin Petrov

2004-09-01T23:59:59.000Z

182

Pair Production of Tau Sneutrinos at Linear Colliders  

E-Print Network (OSTI)

The pair production of tau sneutrinos in $e^{+}e^{-}$ collisions and their subsequent decays are studied in a framework of the supersymmetric extension of the standard model. We present an analysis for the parameter space (BR vs. mass) which could be explored at the future high energy $e^{+}e^{-}$ colliders.

Ari, V

2010-01-01T23:59:59.000Z

183

Pairing Functions, Boolean Evaluation and Binary Decision Diagrams  

E-Print Network (OSTI)

A ``pairing function'' J associates a unique natural number z to any two natural numbers x,y such that for two ``unpairing functions'' K and L, the equalities K(J(x,y))=x, L(J(x,y))=y and J(K(z),L(z))=z hold. Using pairing functions on natural number representations of truth tables, we derive an encoding for Binary Decision Diagrams with the unique property that its boolean evaluation faithfully mimics its structural conversion to a a natural number through recursive application of a matching pairing function. We then use this result to derive {\\em ranking} and {\\em unranking} functions for BDDs and reduced BDDs. The paper is organized as a self-contained literate Prolog program, available at \\url{http://logic.csci.unt.edu/tarau/research/2008/pBDD.zip}. {\\em Keywords:} logic programming and computational mathematics, pairing/unpairing functions, encodings of boolean functions, binary decision diagrams, natural number representations of truth tables

Tarau, Paul

2008-01-01T23:59:59.000Z

184

Set-sharing is redundant for pair-sharing  

Science Conference Proceedings (OSTI)

Although the usual goal of sharing analysis is to detect which pairs of variables share, the standard choice for sharing analysis is a domain that characterizes set-sharing. In this paper, we question, apparently for the first time, whether this domain ... Keywords: abstract interpretation, data-flow analysis, logic programming, sharing analysis

Roberto Bagnara; Patricia M. Hill; Enea Zaffanella

2002-04-01T23:59:59.000Z

185

Efficient device pairing using "Human-comparable" synchronized audiovisual patterns  

Science Conference Proceedings (OSTI)

"Pairing" is referred to as the operation of achieving authenticated key agreement between two human-operated devices over a short- or medium-range wireless communication channel (such as Bluetooth, WiFi). The devices are ad hoc in nature, i.e., they ...

Ramnath Prasad; Nitesh Saxena

2008-06-01T23:59:59.000Z

186

A pair of disjoint 3-GDDs of type gtu1  

Science Conference Proceedings (OSTI)

Pairwise disjoint 3-GDDs can be used to construct some optimal constant-weight codes. We study the existence of a pair of disjoint 3-GDDs of type g t u 1 and establish that its necessary conditions ... Keywords: 05B05, Constant-composition code, Constant-weight code, Disjoint, Group divisible design, Idempotent Latin square, Modified group divisible design, Resolvable

Yanxun Chang; Yeow Meng Chee; Junling Zhou

2011-07-01T23:59:59.000Z

187

Secure SMS based automatic device pairing approach for mobile phones  

Science Conference Proceedings (OSTI)

Bluetooth is recognized as one of the efficient way of data transmission at short distances wirelessly. Despite the fact that Bluetooth is widely accepted wireless standard for data transmission, there are also some security issues associated with Bluetooth. ... Keywords: global system for mobiles (GSM), mobile device pairing, out of band (OOB) channel, short messaging service (SMS)

Shoohira Aftab, Amna Khalid, Asad Raza, Haider Abbas

2013-07-01T23:59:59.000Z

188

A Complementary Pair of Four-Terminal Silicon Synapses  

Science Conference Proceedings (OSTI)

We have developed a complementary pair of pFET and nFET floating-gate silicon MOS transistors for analog learning applications. The memory storage is nonvolatile; hot-electron ... Keywords: floating-gate MOSFET, silicon learning, synapse transistor

Chris Diorio; Paul Hasler; Bradley A. Minch; Carver Mead

1997-05-01T23:59:59.000Z

189

Schwinger Vacuum Pair Production in Chirped Laser Pulses  

E-Print Network (OSTI)

The recent developments of high intensity ultra-short laser pulses have raised the hopes of observing Schwinger vacuum pair production which is one of the important non-perturbative phenomena in Quantum electrodynamics (QED). The quantitative analysis of realistic high intensity laser pulses is vital for understanding the effect of the field parameters on the momentum spectrum of the produced particles. In this study, we analyze chirped laser pulses with a sub-cycle structure, and investigate the effects of the chirp parameter on the momentum spectrum of the produced particles. The combined effect of the chirp and carrier phase of the laser pulse is also analyzed. These effects are qualitatively explained by investigating the turning point structure of the potential within the framework of the complex WKB scattering approach to pair production.

Cesim K. Dumlu

2010-06-19T23:59:59.000Z

190

Pair creation by a photon in an electric field  

E-Print Network (OSTI)

The process of pair creation by a photon in a constant and homogeneous electric field is investigated basing on the polarization operator in the field. The total probability of the process is found in a relatively simple form. At high energy the quasiclassical approximation is valid. The corrections to the standard quasiclassical approximation (SQA) are calculated. In the region relatively low photon energies, where SQA is unapplicable, the new approximation is used. It is shown that in this energy interval the probability of pair creation by a photon in electric field exceeds essentially the corresponding probability in a magnetic field. This approach is valid at the photon energy much larger than "vacuum" energy in electric field: $\\omega\\gg eE/m$. For smaller photon energies the low energy approximation is developed. At $\\omega\\ll eE/m$ the found probability describes the absorption of soft photon by the particles created by an electric field.

V. N. Baier; V. M. Katkov

2009-12-29T23:59:59.000Z

191

Threshold energy surface and Frenkel-pair resistivity for Cu  

SciTech Connect

In-situ electrical resistivity damage-rate measurements in the high voltage electron microscope have been used to study electron-irradiation-induced defect production in copper single crystals at T < 10/sup 0/K. Analysis of the directional and energy dependence yields a threshold energy surface that is significantly different from those of previous investigations: two pockets of low threshold energy centered at <100> and <110> surrounded by regions of much higher threshold energy. The corresponding damage function exhibits a plateau of 0.6 Frenkel pairs. the present results imply a Frenkel pair resistivity for C of (2.75/sub -0.2//sup +0.6/) x ..cap omega..-cm.

King, W.E.; Merkle, K.L.; Meshii, M.

1982-01-01T23:59:59.000Z

192

Electron and positron pair production of compact stars  

E-Print Network (OSTI)

Neutral stellar core at or over nuclear densities is described by a positive charged baryon core and negative charged electron fluid since they possess different masses and interactions. Based on a simplified model of a gravitationally collapsing or pulsating baryon core, we approximately integrate the Einstein-Maxwell equations and the equations for the number and energy-momentum conservation of complete degenerate electron fluid. We show possible electric processes that lead to the production of electron-positron pairs in the boundary of a baryon core and calculate the number and energy of electron-positron pairs. This can be relevant for understanding the energetic sources of supernovae and gamma-ray bursts.

Wen-Biao Han; Remo Ruffini; She-Sheng Xue

2011-10-04T23:59:59.000Z

193

Microwave and THz sensing using slab-pair-based metamaterials  

SciTech Connect

In this work the sensing capability of an artificial magnetic metamaterial based on pairs of metal slabs is demonstrated, both theoretically and experimentally, in the microwave regime. The demonstration is based on transmission measurements and simulations monitoring the shift of the magnetic resonance frequency as one changes a thin dielectric layer placed between the slabs of the pairs. Strong dependence of the magnetic resonance frequency on both the permittivity and the thickness of the dielectric layer under detection was observed. The sensitivity to the dielectrics? permittivity (?) is larger for dielectrics of low ? values, which makes the approach suitable for sensing organic materials also in the THz regime. The capability of our approach for THz sensing is also demonstrated through simulations.

Kenanakis, G.; Shen, Nianhai; Mavidis, Ch.; Katsarakis, N.; Kafesaki, M.; Soukoulis, Costas M.; Economou, E.N.

2012-10-15T23:59:59.000Z

194

Nonclassical correlation of cascaded photon pairs emitted from quantum dots  

SciTech Connect

We studied the quantum correlation of the photon pairs generated by biexciton cascade decays of self-assembled quantum dots, and determined the correlation sudden-change temperature, which is shown to be independent of the background noise, far lower than the entanglement sudden-death temperature, and therefore, easier to be observed in experiments. The relationship between the fine-structure splitting and the sudden-change temperature is also provided.

Li, Chuan-Feng; Zou, Yang; Xu, Jin-Shi; Ge, Rong-Chun; Guo, Guang-Can [Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei 230026 (China)

2011-11-15T23:59:59.000Z

195

Exact Solution of the Isovector Neutron-Proton Pairing Hamiltonian  

SciTech Connect

The complete exact solution of the T=1 neutron-proton pairing Hamiltonian is presented in the context of the SO(5) Richardson-Gaudin model with nondegenerate single-particle levels and including isospin symmetry-breaking terms. The power of the method is illustrated with a numerical calculation for {sup 64}Ge for a pf+g{sub 9/2} model space which is out of reach of modern shell-model codes.

Dukelsky, J.; Errea, B.; Lerma, S.H. [Instituto de Estructura de la Materia, CSIC. Serrano 123, 28006 Madrid (Spain); Gueorguiev, V.G. [Lawrence Livermore National Laboratory, Livermore, California (United States); Institute of Nuclear Research and Nuclear Energy, BAS, Sofia 1784 (Bulgaria); Van Isacker, P. [Grand Accelerateur National d'Ions Lourds, BP 55027, F-14076 Caen Cedex 5 (France); Dimitrova, S. [Institute of Nuclear Research and Nuclear Energy, BAS, Sofia 1784 (Bulgaria)

2006-02-24T23:59:59.000Z

196

Top quark pair production cross section at the Tevatron  

SciTech Connect

Top quark pair production cross section has been measured at the Tevatron by CDF and D0 collaborations using different channels and methods, in order to test standard model predictions, and to search for new physics hints affecting the t{bar t} production mechanism or decay. Measurements are carried out with an integrated luminosity of 1.0 to 2.0 fb{sup -1}, and are found to be consistent with standard model expectations.

Cortiana, Giorgio; /INFN, Padua /Padua U.

2008-04-01T23:59:59.000Z

197

Designed Diamond Ground State via Optimized Isotropic Monotonic Pair Potentials  

E-Print Network (OSTI)

We apply inverse statistical-mechanical methods to find a simple family of optimized isotropic, monotonic pair potentials, under certain constraints, whose ground states for a wide range of pressures is the diamond crystal. These constraints include desirable phonon spectra and the widest possible pressure range for stability. We also ascertain the ground-state phase diagram for a specific optimized potential to show that other crystal structures arise for other pressures. Cooling disordered configurations interacting with our optimized potential to absolute zero frequently leads to the desired diamond crystal ground state, revealing that the capture basin for the global energy minimum is large and broad relative to the local energy minima basins.

Etienne Marcotte; Frank H. Stillinger; Salvatore Torquato

2012-12-15T23:59:59.000Z

198

Measurement of $\\psi(2S)$ decays to baryon pairs  

E-Print Network (OSTI)

A sample of 3.95M $\\psi(2S)$ decays registered in the BES detector are used to study final states containing pairs of octet and decuplet baryons. We report branching fractions for $\\psi(2S)\\to p\\bar{p}$, $\\Lambda\\bar{\\Lambda}$, $\\Sigma^0\\bar{\\Sigma}{}^0$, $\\Xi^-\\bar{\\Xi}{}^+$, $\\Delta^{++}\\bar{\\Delta}{}^{--}$, $\\Sigma^+(1385)\\bar{\\Sigma}{}^-(1385 )$, $\\Xi^0(1530)\\bar{\\Xi}{}^0(1530)$, and $\\Omega^-\\bar{\\Omega}{}^+$. These results are compared to expectations based on the SU(3)-flavor symmetry, factorization, and perturbative QCD.

Bai, J Z; Bian, J G; Blum, I K; Chen, A D; Chen, G P; Chen, H F; Chen, H S; Chen, J; Chen Jia Chao; Chen, X D; Chen, Y; Chen, Y B; Cheng Bao Sen; Choi, J B; Cui, X Z; Ding, H L; Dong, L Y; Du, Z Z; Dunwoodie, W M; Gao, C S; Gao, M L; Gao, S Q; Gratton, P; Gu, J H; Gu, S D; Gu, W X; Guo, Y N; Guo, Z J; Han, S W; Han, Y; Harris, F A; He, J; He, J T; He, K L; He, M; Heng, Y K; Hitlin, D G; Hu, G Y; Hu, H M; Hu, J L; Hu, Q H; Hu, T; Huang, G S; Huang, X P; Huang, Y Z; Izen, J M; Jiang, C H; Jin, Y; Jones, B D; Ju, X; Kang, J S; Ke, Z J; Kelsey, M H; Kim, B K; Kim, H J; Kim, S K; Kim, T Y; Kong, D; Lai, Y F; Lang, P F; Lankford, A J; Li, C G; Li, D; Li, H B; Li, J; Li, J C; Li, P Q; Li, W; Li, W G; Li, X H; Li Xiao Nan; Li Xue Qian; Li Zhong Chao; Liu, B; Liu, F; Liu Feng; Liu, H M; Liu, J; Liu, J P; Liu, R G; Liu, Y; Liu, Z X; Lou, X C; Lowery, B; Lu, G R; Lu, F; Lu, J G; Luo, X L; Ma, E C; Ma, J M; Malchow, R L; Mao, H S; Mao, Z P; Meng, X C; Mo, X H; Nie, J; Olsen, S L; Oyang, J Y T; Paluselli, D; Pan, L J; Panetta, J; Park, H; Porter, F; Qi, N D; Qi, X R; Qian, C D; Qiu, J F; Qu, Y H; Que, Y K; Rong, G; Schernau, M; Shao, Y Y; Shen, B W; Shen, D L; Shen, H; Shen, H Y; Shen, X Y; Shi, F; Shi, H Z; Song, X F; Standifird, J; Suh, J Y; Sun, H S; Sun, L F; Sun, Y Z; Tang, S Q; Toki, W; Tong, G L; Varner, G S; Wang, F; Wang, L; Wang, L S; Wang, L Z; Wang, P; Wang, P L; Wang, S M; Wang, Y Y; Wang, Z Y; Weaver, M; Wei, C L; Wu, N; Wu, Y G; Xi, D M; Xia, X M; Xie, Y; Xie, Y H; Xu, G F; Xue, S T; Yan, J; Yan, W G; Yang, C M; Yang, C Y; Yang, H X; Yang, W; Yang, X F; Ye, M H; Ye Shu Wei; Ye, Y X; Yu, C S; Yu, C X; Yu, G W; Yu Yu Hei; Yu, Z Q; Yuan, C Z; Yuan, Y; Zhang Bing Yun; Zhang, C; Zhang, C C; Zhang, D H; De Hong Zhang; Zhang, H L; Zhang, J; Zhang, J W; Zhang, L; Zhang Lei; Zhang, L S; Zhang, P; Zhang, Q J; Zhang, S Q; Zhang, X Y; Zhang, Y Y; Zhao, D X; Zhao, H W; Jia Wei Zhao; Zhao Jia Wei; Zhao, M; Zhao Wei Ren; Zhao, Z G; Zheng Jian Ping; Zheng Lin Sheng; Zheng Zhi Peng; Zhou, B Q; Zhou, L; Zhu, K J; Zhu, Q M; Zhu, Y C; Zhu, Y S; Zhu, Z A; Zhuang, B A

2001-01-01T23:59:59.000Z

199

A canonical form for Projected Entangled Pair States and applications  

E-Print Network (OSTI)

We show that two different tensors defining the same translational invariant injective Projected Entangled Pair State (PEPS) in a square lattice must be the same up to a trivial gauge freedom. This allows us to characterize the existence of any local or spatial symmetry in the state. As an application of these results we prove that a SU(2) invariant PEPS with half-integer spin cannot be injective, which can be seen as a Lieb-Shultz-Mattis theorem in this context. We also give the natural generalization for U(1) symmetry in the spirit of Oshikawa-Yamanaka-Affleck, and show that a PEPS with Wilson loops cannot be injective.

Perez-Garcia, D; Gonzalez-Guillen, C E; Wolf, M M; Cirac, J I

2009-01-01T23:59:59.000Z

200

Wave localization and density bunching in pair ion plasmas  

SciTech Connect

By investigating the nonlinear propagation of high intensity electromagnetic (EM) waves in a pair ion plasma, whose symmetry is broken via contamination by a small fraction of high mass immobile ions, it is shown that this new and interesting state of (laboratory created) matter is capable of supporting structures that strongly localize and bunch the EM radiation with density excess in the region of localization. Testing of this prediction in controlled laboratory experiments can lend credence, inter alia, to conjectures on structure formation (via the same mechanism) in the MEV era of the early universe.

Mahajan, Swadesh M. [Institute for Fusion Studies, University of Texas at Austin, Austin, Texas 78712 (United States); Shatashvili, Nana L. [Faculty of Exact and Natural Sciences, Javakhishvili Tbilisi State University, Tbilisi 0128 (Georgia) and Andronikashvili Institute of Physics, Tbilisi 0177, Georgia (United States)

2008-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Asymmetry-driven structure formation in pair plasmas  

SciTech Connect

The nonlinear propagation of electromagnetic waves in pair plasmas, in which the electrostatic potential plays a very important but subdominant role of a 'binding glue' is investigated. Several mechanisms for structure formation are investigated, in particular, the 'asymmetry' in the initial temperatures of the constituent species. It is shown that the temperature asymmetry leads to a (localizing) nonlinearity that is qualitatively different from the ones originating in ambient mass or density difference. The temperature-asymmetry-driven focusing-defocusing nonlinearity supports stable localized wave structures in 1-3 dimensions, which, for certain parameters, may have flat-top shapes.

Mahajan, S. M.; Shatashvili, N. L.; Berezhiani, V. I. [Institute for Fusion Studies, University of Texas at Austin, Austin, Texas 78712 (United States); Andronikashvili Institute of Physics, Tbilisi 0177 (Georgia) and Faculty of Exact and Natural Sciences, Department of Physics, Javakhishvili Tbilisi State University, Tbilisi 0128 (Georgia)

2009-12-15T23:59:59.000Z

202

HOM Survey of the First CEBAF Upgrade Style Cavity Pair  

SciTech Connect

The planned upgrade of the Continuous Electron Beam Accelerator Facility (CEBAF) at the Thomas Jefferson National Accelerator Laboratory (JLab) requires ten new superconducting rf (SRF) cavity cryomodules to double the beam energy to the envisaged 12 GeV. Adequate cavity Higher Order Mode (HOM) suppression is essential to avoid multipass, multibunch beam break-up (BBU) instabilities of the recirculating beam. We report on detailed HOM surveys performed for the first two upgrade style cavities tested in a dedicated cavity pair cryomodule at 2K. The safety margin to the BBU threshold budget at 12 GeV has been assessed.

Marhauser, Frank; Davis, G; Drury, Michael; Grenoble, Christiana; Hogan, John; Manus, Robert; Preble, Joseph; Reece, Charles; Rimmer, Robert; Tian, Kai

2009-05-01T23:59:59.000Z

203

Higgs boson pair production at the LHC in the $b \\bar{b} W^+ W^-$ channel  

E-Print Network (OSTI)

We consider Higgs boson pair production at the LHC in the $b \\bar{b} W^+ W^-$ channel, with subsequent decay of the $W^+W^-$ pair into $\\ell \

Papaefstathiou, Andreas; Zurita, Jos

2012-01-01T23:59:59.000Z

204

Connection between the Green functions of the supersymmetric pair of Dirac Hamiltonians  

E-Print Network (OSTI)

The Sukumar theorem about the connection between the Green functions of the supersymmetric pair of the Schr\\"odinger Hamiltonians is generalized to the case of the supersymmetric pair of the Dirac Hamiltonians.

Ekaterina Pozdeeva

2007-09-10T23:59:59.000Z

205

Creation of Electron Spinless Pairs in the Superconductivity  

E-Print Network (OSTI)

First, it is demonstrated that the Froolich Hamiltonian of system in the superconductivity, proposed by the model of a phonon gas and an electron gas mixture, contains a subtle error. In this respect, we present a correct form of the Froolich Hamiltonian of system where the term of the interaction between the phonon modes and the density modes of the electron modes is described by the term of scattering, introduced by the Froolich in a phonon gas electron gas mixture. The later is removed by a canonical transformation of the Froolich Hamiltonian by an appearance of the attractive interaction mediated via the electron modes, which leads to a bound state on a spinless electron pairs. In this letter, we show that the Cooper approximation as the constancy of the density states within around of the Fermi level has a flaw because the effective attractive forces cannot create the Cooper pairs into energetic gap at the Fermi level. In this letter, we find a condition for density metal which determines metal as superconductor.

V. N. Minasyan

2009-03-02T23:59:59.000Z

206

Investigation of the nuetralino pair production at LHC  

E-Print Network (OSTI)

In this article, we investigate the Drell-Yan process of the light neutralino pair $\\widetilde{\\chi}_{i}^{0}\\widetilde{\\chi}_{j}^{0}$ ($i,j=1,2$) productions at proton-proton collisions and we present the general formulate for the differential cross sections. We conduct an extensive examination of the dependence of the total cross section of the subprocesses $q \\bar q \\to \\widetilde \\chi_{i}^{0}\\widetilde\\chi_{j}^{0}$ on the beam energy, on the mass of the squarks and also on the $M_2$ gaugino for the three extremely different scenarios. For all three cases, the outcomes are as follows. The dependence of the total cross section of the subprocesses $q \\bar q \\to \\widetilde \\chi_{i}^{0} \\widetilde \\chi_{j}^{0}$ on the beam energy is dominated by one of the subprocesses, $q \\bar q \\to \\widetilde \\chi_{1}^{0} \\widetilde \\chi_{2}^{0}$. On the other hand, the dependence of the total cross section of the subprocesses $q \\bar q \\to \\widetilde \\chi_{i}^{0} \\widetilde \\chi_{j}^{0}$ on the mass of the squarks is dominated by one of the subprocesses, $q \\bar q \\to \\widetilde \\chi_{1}^{0} \\widetilde \\chi_{2}^{0}$. We derive there from that our findings may lead to new insights relating to experimental investigations and these dependencies may be used as bases of an experimental research for the neutralino pair at LHC.

A. I. Ahmadov; I. Boztosun; R. Kh. Muradov; A. Soylu; E. A. Dadashov

2006-04-20T23:59:59.000Z

207

Photon polarisation in electron-seeded pair-creation cascades  

E-Print Network (OSTI)

An electromagnetic pair-creation cascade seeded by an electron or a photon in an intense plane wave interacts in a complicated way with the external field. Many simulations neglect the vector nature of photons by including their interaction using unpolarised cross-sections. After deriving rates for the tree-level processes of nonlinear Compton scattering and pair creation with an arbitrary linearly-polarised photon in a constant-crossed field, we present results of numerical simulations that include the photon's vector nature. The simulations of seed electrons in a rotating electric field of optical frequency on the one hand support the approximation of using unpolarised cross-sections for tree-level processes, which predicts the same number of created particles when using polarised cross-section to within around 5 percent. On the other hand, these simulations show that when the polarisation of the photon can be influenced by its environment, the asymmetry in the polarisation distribution could be used to significantly increase the rates of each process.

B. King; N. Elkina; H. Ruhl

2013-01-29T23:59:59.000Z

208

Charge insensitive qubit design derived from the Cooper pair box  

E-Print Network (OSTI)

Short dephasing times pose one of the main challenges in realizing a quantum computer. Different approaches have been devised to cure this problem for superconducting qubits, a prime example being the operation of such devices at optimal working points, so-called "sweet spots." This latter approach led to significant improvement of $T_2$ times in Cooper pair box qubits [D. Vion et al., Science 296, 886 (2002)]. Here, we introduce a new type of superconducting qubit called the "transmon." Unlike the charge qubit, the transmon is designed to operate in a regime of significantly increased ratio of Josephson energy and charging energy $E_J/E_C$. The transmon benefits from the fact that its charge dispersion decreases exponentially with $E_J/E_C$, while its loss in anharmonicity is described by a weak power law. As a result, we predict a drastic reduction in sensitivity to charge noise relative to the Cooper pair box and an increase in the qubit-photon coupling, while maintaining sufficient anharmonicity for selective qubit control. Our detailed analysis of the full system shows that this gain is not compromised by increased noise in other known channels.

Jens Koch; Terri M. Yu; Jay Gambetta; A. A. Houck; D. I. Schuster; J. Majer; Alexandre Blais; M. H. Devoret; S. M. Girvin; R. J. Schoelkopf

2007-02-28T23:59:59.000Z

209

Role of BCS-type pairing in light deformed nuclei: A relativistic mean field approach  

E-Print Network (OSTI)

We calculate the binding energy and deformation parameter for light nuclei with and without pairing using a deformed relativistic mean field model. The role of BCS-type pairing effect is analyzed for Ne and F isotopes. The calculated odd-even staggering and the deformation parameters argue strongly against the role of pairing in the light nuclei.

P. Arumugam; T. K. Jha; S. K. Patra

2003-11-25T23:59:59.000Z

210

An incremental approach to closest pair queries in spatial networks using best-first search  

Science Conference Proceedings (OSTI)

This paper addresses the problem of k Closest Pairs (kCP) query in spatial network databases. A Best-First search approach namely BFCP (Best-First Closest Pair) is proposed. Given two data sets of objects in a spatial network, BFCP first finds the 1st ... Keywords: buffer management, closest pair, location-based services, spatial networks

Chunan Chen; Weiwei Sun; Baihua Zheng; Dingding Mao; Weimo Liu

2011-08-01T23:59:59.000Z

211

Electrostatic ion waves in non-Maxwellian pair-ion plasmas  

SciTech Connect

The electrostatic ion waves are studied for non-Maxwellian or Lorentzian distributed unmagnetized pair-ion plasmas. The Vlasov equation is solved and damping rates are calculated for electrostatic waves in Lorentzian pair-ion plasmas. The damping rates of the electrostatic ion waves are studied for the equal and different ion temperatures of pair-ion species. It is found that the Landau damping rate of the ion plasma wave is increased in Lorentzian plasmas in comparison with Maxwellian pair-ion plasmas. The numerical results are also presented for illustration by taking into account the parameters reported in fullerene pair-ion plasma experiments.

Arshad, Kashif [Department of Physics, Quaid-i-Azam University, Islamabad 44000 (Pakistan); National Centre for Physics, Quaid-i-Azam University Campus, Shadhra Valley Road, Islamabad 44000 (Pakistan); Mahmood, S. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad 44000 (Pakistan); National Centre for Physics, Quaid-i-Azam University Campus, Shadhra Valley Road, Islamabad 44000 (Pakistan)

2010-12-15T23:59:59.000Z

212

Density and pair-density scaling for deriving the Euler equation in density-functional and pair-density-functional theory  

Science Conference Proceedings (OSTI)

A link between density and pair density functional theories is presented. Density and pair density scaling are used to derive the Euler equation in both theories. Density scaling provides a constructive way of obtaining approximations for the Pauli potential. The Pauli potential (energy) of the density functional theory is expressed as the difference of the scaled and original exchange-correlation potentials (energies).

Nagy, A. [Department of Theoretical Physics, University of Debrecen, H-4010 Debrecen (Hungary)

2011-09-15T23:59:59.000Z

213

Reduction in maximum time uncertainty of paired time signals  

DOE Patents (OSTI)

Reduction in the maximum time uncertainty (t/sub max/ - t/sub min/) of a series of paired time signals t/sub 1/ and t/sub 2/ varying between two input terminals and representative of a series of single events where t/sub 1/ less than or equal to t/sub 2/ and t/sub 1/ + t/sub 2/ equals a constant, is carried out with a circuit utilizing a combination of OR and AND gates as signal selecting means and one or more time delays to increase the minimum value (t/sub min/) of the first signal t/sub 1/ closer to t/sub max/ and thereby reduce the difference. The circuit may utilize a plurality of stages to reduce the uncertainty by factors of 20 to 800.

Theodosiou, G.E.; Dawson, J.W.

1981-02-11T23:59:59.000Z

214

Photoproduction of {pi}{pi} Pairs off {sup 7}Li  

Science Conference Proceedings (OSTI)

This paper reports on the quasi-free photoproduction of {pi}{sup 0}{pi}{sup 0} and {pi}{sup 0}{pi}{sup +/-} pairs from {sup 7}Li in view of the in-medium properties of hadrons. Measurements have been done using the CB/TAPS detector setup and the Glasgow photon tagging spectrometer for incident photon energies up to 820 MeV. At small invariant masses, an enhancement of the neutral invariant mass distributions is seen compared to the mixed charged channel and could be explained either by an in-medium modification of the {pi}{pi} interaction in the I = J = 0 channel or by effects related to the final state interactions.

Maghrbi, Yasser [Department of Physics, University of Basel, CH-4056 Basel (Switzerland)

2011-10-21T23:59:59.000Z

215

Interaction between graphene and metamaterials: split rings vs. wire pairs  

Science Conference Proceedings (OSTI)

We have recently shown that graphene is unsuitable to replace metals in the current-carrying elements of metamaterials. At the other hand, experiments have demonstrated that a layer of graphene can modify the optical response of a metal-based metamaterial. Here we study this electromagnetic interaction between metamaterials and graphene. We show that the weak optical response of graphene can be modified dramatically by coupling to the strong resonant fields in metallic structures. A crucial element determining the interaction strength is the orientation of the resonant fields. If the resonant electric field is predominantly parallel to the graphene sheet (e.g., in a complementary split-ring metamaterial), the metamaterials resonance can be strongly damped. If the resonant field is predominantly perpendicular to the graphene sheet (e.g., in a wire-pair metamaterial), no significant interaction exists.

Zou, Yanhong; Tassin, Philippe; Koschny, Thomas; Soukoulis, Costas

2012-05-14T23:59:59.000Z

216

Measurement of jet multiplicity in top pair events  

E-Print Network (OSTI)

The normalized differential $t\\bar t$ cross section in jet multiplicity bins is presented, measured in proton-proton collisions using 5.0~fb$^{-1}$ of data collected at $\\sqrt{s}$ = 7~\\TeV. The analysis is performed in the electron + jets and the muon + jets channels. The jet multiplicity distribution is sensitive to initial state radiation. A comparison of the data with different Monte Carlo generators is shown. After background subtraction, the data are in agreement with $t\\bar t$ signal Monte Carlo distributions. Additionally, the measurement of the top quark pair differential cross-section in the number of radiated additional hard partons in the muon + jets channel is presented. The measured fractions of events with $t\\bar t$ + 0, 1, and $\\geq$ 2 additional partons are in good agreement with different Monte Carlo predictions.

CMS Collaboration

2012-01-01T23:59:59.000Z

217

A pair distribution function analysis of zeolite beta  

SciTech Connect

We describe the structural refinement of zeolite beta using the local structure obtained with the pair distribution function (PDF) method. A high quality synchrotron and two neutron scattering datasets were obtained on two samples of siliceous zeolite beta. The two polytypes that make up zeolite beta have the same local structure; therefore refinement of the two structures was possible using the same experimental PDF. Optimized structures of polytypes A and B were used to refine the structures using the program PDFfit. Refinements using only the synchrotron or the neutron datasets gave results inconsistent with each other but a cyclic refinement with the two datasets gave a good fit to both PDFs. The results show that the PDF method is a viable technique to analyze the local structure of disordered zeolites. However, given the complexity of most zeolite frameworks, the use of both X-ray and neutron radiation and high-resolution patterns is essential to obtain reliable refinements.

Martinez-Inesta, M.M.; Peral, I.; Proffen, T.; Lobo, R.F. (Delaware); (LANL)

2010-07-20T23:59:59.000Z

218

Two-photon production of charged pion and kaon pairs  

E-Print Network (OSTI)

A measurement of the cross section for the combined two-photon production of charged pion and kaon pairs is performed using 1.2~\\rm fb^{-1} of data collected by the CLEO II detector at the Cornell Electron Storage Ring. The cross section is measured at invariant masses of the two-photon system between 1.5 and 5.0~GeV/c^2, and at scattering angles more than 53^\\circ away from the \\gamma\\gamma collision axis in the \\gamma\\gamma center-of-mass frame. The large background of leptonic events is suppressed by utilizing the CsI calorimeter in conjunction with the muon chamber system. The reported cross section is compared with leading order QCD models as well as previous experiments. In particular, although the functional dependence of the measured cross section disagrees with leading order QCD at small values of the two-photon invariant mass, the data show a transition to perturbative behavior at an invariant mass of approximately 2.5~GeV/c^2. hardcopies with figures can be obtained by writing to to: Pam Morehouse ...

Dominick, J; Sanghera, S; Shelkov, V; Skwarnicki, T; Stroynowski, R; Volobuev, I P; Wei, G; Zadorozhny, P; Artuso, M; Goldberg, M; He, D; Horwitz, N; Kennett, R; Mountain, R; Moneti, G C; Muheim, F; Mukhin, Y; Playfer, S; Rozen, Y; Stone, S; Thulasidas, M; Vasseur, G; Zhu, G; Bartelt, J; Csorna, S E; Egyed, Z; Jain, V; Kinoshita, K; Edwards, K W; Ogg, M; Britton, D I; Hyatt, E R F; MacFarlane, D B; Patel, P M; Akerib, D S; Barish, B C; Chadha, M; Chan, S; Cowen, D F; Eigen, G; Miller, J S; O'Grady, C; Urheim, J; Weinstein, A J; Acosta, D; Athanas, M; Masek, G E; Paar, H P; Sivertz, M; Gronberg, J B; Kutschke, R; Menary, S R; Morrison, R J; Nakanishi, S; Nelson, H N; Nelson, T K; Qiao, C; Richman, J D; Ryd, A; Tajima, H; Sperka, D; Witherell, M S; Procario, M; Balest, R; Cho, K; Daoudi, M; Ford, W T; Johnson, D R; Lingel, K; Lohner, M; Rankin, P; Smith, J G; Alexander, J P; Bebek, C; Berkelman, K; Bloom, K; Browder, T E; Cassel, David G; Cho, H A; Coffman, D M; Drell, P S; Ehrlich, R; Gaidarev, P B; Galik, R S; Garca-Sciveres, M; Geiser, B; Gittelman, B; Gray, S W; Hartill, D L; Heltsley, B K; Jones, C D; Jones, S L; Kandaswamy, J; Katayama, N; Kim, P C; Kreinick, D L; Ludwig, G S; Masui, J; Mevissen, J; Mistry, N B; Ng, C R; Nordberg, E; Patterson, J R; Peterson, D; Riley, D; Salman, S; Sapper, M; Wrthwein, F; Avery, P; Freyberger, A P; Rodrguez, J; Stephens, R; Yang, S; Yelton, J; Cinabro, D; Henderson, S; Liu, T; Saulnier, M; Wilson, R; Yamamoto, H; Bergfeld, T; Eisenstein, B I; Gollin, G; Ong, B; Palmer, M; Selen, M; Thaler, J J; Sadoff, A J; Ammar, R; Ball, S; Baringer, P; Bean, A; Besson, D; Coppage, D; Copty, N K; Davis, R; Hancock, N; Kelly, M; Kwak, N; Lam, H; Kubota, Y; Lattery, M; Nelson, J K; Patton, S; Perticone, D; Poling, R A; Savinov, V; Schrenk, S; Wang, R; Alam, M S; Kim, I J; Nemati, B; O'Neill, J J; Severini, H; Sun, C R; Zoeller, M M; Crawford, G; Daubenmier, C M; Fulton, R; Fujino, D; Gan, K K; Honscheid, K; Kagan, H; Kass, R; Lee, J; Malchow, R L; Skovpen, Y; Sung, M; White, C; Butler, F; Fu, X; Kalbfleisch, G R; Ross, W R; Skubic, P L; Snow, J; Wang, P L; Wood, M; Brown, D N; Fast, J; McIlwain, R L; Miao, T; Miller, D H; Modesitt, M; Payne, D; Shibata, E I; Shipsey, I P J; Wang Pei Ning; Battle, M; Ernst, J; Kwon, Y; Roberts, S; Thorndike, E H; Wang, C H

1994-01-01T23:59:59.000Z

219

Photons with tunable spectral shapes: The transition from frequency anticorrelated to correlated photon pairs  

E-Print Network (OSTI)

We present an experimental demonstration of the full control of the frequency correlations of entangled photon pairs. The joint spectrum of photon pairs is continuously varied from photons that exhibit anticorrelation in frequency to photons that exhibit correlation in frequency, passing through the case of uncorrelated photons. Highly entangled frequency-anticorrelated photon pairs were obtained even when an ultrafast laser was used as a pump. The different kinds of correlations are obtained without changing neither the wavelength, nor the nonlinear crystal.

M. Hendrych; M. Mi?uda; A. Valencia; J. P. Torres

2009-08-13T23:59:59.000Z

220

Photonic crystal fibre source of photon pairs for quantum information processing  

E-Print Network (OSTI)

We demonstrate two key components for optical quantum information processing: a bright source of heralded single photons; and a bright source of entangled photon pairs. A pair of pump photons produces a correlated pair of photons at widely spaced wavelengths (583 nm and 900 nm), via a $\\chi^{(3)}$ four-wave mixing process. We demonstrate a non-classical interference between heralded photons from independent sources with a visibility of 95%, and an entangled photon pair source, with a fidelity of 89% with a Bell state.

Jeremie Fulconis; Olivier Alibart; Jeremy L. O'Brien; William J. Wadsworth; John G. Rarity

2006-11-22T23:59:59.000Z

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

COSMIC EVOLUTION OF STAR FORMATION ENHANCEMENT IN CLOSE MAJOR-MERGER GALAXY PAIRS SINCE z = 1  

Science Conference Proceedings (OSTI)

The infrared (IR) emission of 'M {sub *} galaxies' (10{sup 10.4} {star} {star formation enhancement induced by galaxy-galaxy interaction. Both the mean IR spectral energy distribution and mean IR luminosity of star-forming galaxies (SFGs) in SFG+SFG (S+S) pairs in the redshift bin of 0.6 star formation enhancement. SFGs in S+S pairs in a lower redshift bin of 0.2 star formation enhancement. Together with the significant and strong sSFR enhancement shown by SFGs in a local sample of S+S pairs (obtained using previously published Spitzer observations), our results reveal a trend for the star formation enhancement in S+S pairs to decrease with increasing redshift. Between z = 0 and z = 1, this decline of interaction-induced star formation enhancement occurs in parallel with the dramatic increase (by a factor of {approx}10) of the sSFR of single SFGs, both of which can be explained by the higher gas fraction in higher-z disks. SFGs in mixed pairs (S+E pairs) do not show any significant star formation enhancement at any redshift. The difference between SFGs in S+S pairs and in S+E pairs suggests a modulation of the sSFR by the intergalactic medium (IGM) in the dark matter halos hosting these pairs.

Xu, C. K.; Shupe, D. L.; Bock, J.; Bridge, C.; Cooray, A.; Lu, N.; Schulz, B. [California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125 (United States); Bethermin, M.; Aussel, H.; Elbaz, D.; Le Floc'h, E.; Riguccini, L. [Laboratoire AIM-Paris-Saclay, CEA/DSM/Irfu, CNRS, Universite Paris Diderot, CE-Saclay, pt courrier 131, F-91191 Gif-sur-Yvette (France); Berta, S.; Lutz, D.; Magnelli, B. [Max-Planck-Institut fuer Extraterrestrische Physik (MPE), Postfach 1312, D-85741 Garching (Germany); Conley, A. [Center for Astrophysics and Space Astronomy 389-UCB, University of Colorado, Boulder, CO 80309 (United States); Franceschini, A. [Dipartimento di Astronomia, Universita di Padova, vicolo Osservatorio, 3, I-35122 Padova (Italy); Marsden, G. [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1 (Canada); Oliver, S. J. [Astronomy Centre, Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH (United Kingdom); Pozzi, F. [INAF-Osservatorio Astronomico di Roma, via di Frascati 33, I-00040 Monte Porzio Catone (Italy); and others

2012-11-20T23:59:59.000Z

222

Emission of photon pairs at discontinuities of nonlinearity in spontaneous parametric down-conversion  

E-Print Network (OSTI)

In order to fulfil the continuity requirements for electric- and magnetic-field amplitudes at discontinuities of chi2 nonlinearity additional photon pairs have to be emitted in the area of discontinuity. Generalized two-photon spectral amplitudes can be used to describe properties of photon pairs generated in this process that we call surface spontaneous parametric down-conversion. The spectral structure of such photon pairs is similar to that derived for photon pairs generated in the volume. Surface and volume contributions to spontaneous down-conversion can be comparable as an example of nonlinear layered structures shows.

Jan Perina Jr; Antonin Luks; Ondrej Haderka

2009-10-02T23:59:59.000Z

223

Cherenkov Radiation from e+e- Pairs and Its Effect on nu e Induced Showers  

E-Print Network (OSTI)

5] J. V. Jelley, Cherenkov Radiation and its applications (calculated the Cherenkov radiation from e + e ? pairs as a? 2 [1?? 2 ?(?)]), the radiation is suppressed compared to

Mandal, Sourav K.; Klein, Spencer R.; Jackson, J. David

2005-01-01T23:59:59.000Z

224

Natural orbits of atomic Cooper pairs in a nonuniform Fermi gas  

E-Print Network (OSTI)

We examine the basic mode structure of atomic Cooper pairs in an inhomogeneous Fermi gas. Based on the properties of Bogoliubov quasi-particle vacuum, the single particle density matrix and the anomalous density matrix share the same set of eigenfunctions. These eigenfunctions correspond to natural pairing orbits associated with the BCS ground state. We investigate these orbits for a Fermi gas in a spherical harmonic trap, and construct the wave function of a Cooper pair in the form of Schmidt decomposition. The issue of spatial quantum entanglement between constituent atoms in a pair is addressed.

Y. H. Pong; C. K. Law

2006-05-08T23:59:59.000Z

225

Study of Higgs Boson Pair Production at Linear Collider  

E-Print Network (OSTI)

We study the potential of the TESLA linear collider operated at a center-of-mass energy of 500 to 1000 GeV for the measurement of the neutral Higgs boson properties within the framework of the MSSM. The process of associated Higgs boson production with subsequent decays of Higgs bosons into b-quark and tau-lepton pairs is considered. An integrated luminosity of 500 fb^{-1} is assumed at each energy. The Higgs boson masses and production cross sections are measured by reconstructing the bbbb and bb\\tau\\tau final states. The precision of these measurements is evaluated in dependence of the Higgs boson masses. Under the assumed experimental conditions a statistical accuracy ranging from 0.1 to 1.0 GeV is achievable on the Higgs boson mass. The topological cross section \\sigma(e+e- -> HA -> bbbb) can be determined with the relative precision of 1.5 - 6.6 % and cross sections \\sigma(e+e- -> HA -> bb \\tau\\tau) and \\sigma(e+e- -> HA -> \\tau\\tau bb) with precision of 4 - 30 %. Constraints on the Higgs boson widths can be set exploiting bb\\tau\\tau channel. The 5\\sigma discovery limit corresponds to the Higgs mass of around 385 GeV for the degenerate Higgs boson masses in the HA -> bbbb channel at \\sqrts = 800 GeV with integrated luminosity of 500 fb^{-1}. The potential of the Higgs mass determination for the benchmark point SPS 1a for the process e+e- -> HA -> bbbb at \\sqrt{s} = 1 TeV and luminosity 1000 fb^{-1} is investigated.

K. Desch; T. Klimkovich; T. Kuhl; A. Raspereza

2004-06-21T23:59:59.000Z

226

Integrated Photon Pair Sources, Quantum Memories, and Lasers in Lithium Niobate  

E-Print Network (OSTI)

Integrated Photon Pair Sources, Quantum Memories, and Lasers in Lithium Niobate W. Sohler1 , H developments in the field of integrated quantum optics [1] exploiting lithium niobate (LN) waveguide technology: single photon pair sources with Ti:PPLN (periodically poled lithium niobate) waveguide, quantum memories

227

An Improved Test Case Generation Method of Pair-Wise Testing  

Science Conference Proceedings (OSTI)

Pair-wise testing is a testing criterion based on specification, which requires that for each pair of parameters, every combination of their valid value should be covered by at least one test case in the test set. This paper presents an improved method ...

Qian Feng-an; Jiang Jian-hui

2007-10-01T23:59:59.000Z

228

Pairing and alpha-like quartet condensation in N=Z nuclei  

E-Print Network (OSTI)

We discuss the treatment of isovector pairing by an alpha-like quartet condensate which conserves exactly the particle number, the spin and the isospin. The results show that the quartet condensate describes accurately the isovector pairing correlations in the ground state of systems with an equal number of protons and neutrons

N. Sandulescu; J. Dukelsky; D. Negrea

2011-07-21T23:59:59.000Z

229

Induction logging device with a pair of mutually perpendicular bucking coils  

SciTech Connect

An instrument is disclosed for mapping vertical conductive fractures in a resistive bedrock, magnetically inducing eddy currents by a pair of vertically oriented, mutually perpendicular, coplanar coils. The eddy currents drive magnetic fields which are picked up by a second, similar pair of coils.

Koelle, Alfred R. (Los Alamos, NM); Landt, Jeremy A. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

230

MODULI SPACES OF PARABOLIC HIGGS BUNDLES AND PARABOLIC K(D) PAIRS OVER SMOOTH CURVES: I  

E-Print Network (OSTI)

MODULI SPACES OF PARABOLIC HIGGS BUNDLES AND PARABOLIC K(D) PAIRS OVER SMOOTH CURVES: I HANS U. BODEN AND K ?? OJI YOKOGAWA Abstract. This paper concerns the moduli spaces of rank two parabolic Higgs bundles and parabolic K(D) pairs over a smooth curve. Precisely which parabolic bundles occur in stable K

Boden, Hans U.

231

Precoding by Pairing Subchannels to Increase MIMO Capacity With Discrete Input Alphabets  

E-Print Network (OSTI)

AbstractWe consider Gaussian multiple-input multiple-output (MIMO) channels with discrete input alphabets. We propose a nondiagonal precoder based on the X-Codes in [1] to increase the mutual information. The MIMO channel is transformed into a set of parallel subchannels using singular value decomposition (SVD) and X-Codes are then used to pair the subchannels. X-Codes are fully characterized by the pairings and a 2 2 2 real rotation matrix for each pair (parameterized with a single angle). This precoding structure enables us to express the total mutual information as a sum of the mutual information of all the pairs. The problem of finding the optimal precoder with the above structure, which maximizes the total mutual information, is solved by: i) optimizing the rotation angle and the power allocation within each pair and ii) finding the optimal pairing and power allocation among the pairs. It is shown that the mutual information achieved with the proposed pairing scheme is very close to that achieved with the optimal precoder by Cruz et al., and is significantly better than Mercury/waterfilling strategy by Lozano et al. Our approach greatly simplifies both the precoder optimization and the detection complexity, making it suitable for practical applications. Index TermsCondition number, multiple-input multiple-output (MIMO), mutual information, orthogonal frequency division multiplexing (OFDM), precoding, singular value decomposition (SVD). I.

Saif Khan Mohammed; Emanuele Viterbo; Yi Hong; Senior Member; Ananthanarayanan Chockalingam; Senior Member

2010-01-01T23:59:59.000Z

232

Nonperturbative enhancement of heavy quark-pair production in a strong SU(2) color field  

Science Conference Proceedings (OSTI)

Nonperturbative charm and bottom quark-pair production is investigated in the early stage of heavy-ion collisions. The time-dependent study is based on a kinetic description of fermion-pair production in strong non-Abelian fields. We introduce a time-dependent chromo-electric external field with a pulselike time evolution to simulate the overlap of two colliding heavy ions. The calculations is performed in a SU(2) color model with finite current quark masses. Yields of heavy quark pairs are compared to the ones of light and strange quark pairs. We show that the small inverse duration time of the field pulse determines the efficiency of the quark-pair production. The expected suppression for heavy quark production, as follows from the Schwinger formula for a constant field, is not seen, but rather an enhanced heavy quark production appears at ultrarelativistic energies.

Levai, Peter; Skokov, Vladimir [KFKI RMKI Research Institute for Particle and Nuclear Physics, P.O. Box 49, Budapest 1525 (Hungary); Gesellschaft fuer Schwerionenforschung mbH, Planckstr. 1, D-64291 Darmstadt (Germany)

2010-10-01T23:59:59.000Z

233

Low-lying states of heavy nuclei within the nucleon pair approximation  

Science Conference Proceedings (OSTI)

In this article we perform systematic calculations on low-lying states of 33 nuclei with A=202-212, using the nucleon pair approximation of the shell model. We use a phenomenological shell-model Hamiltonian that includes single-particle energies, monopole and quadrupole pairing interactions, and quadrupole-quadrupole interactions. The building blocks of our model space include one J=4 valence neutron pair, and one J=4,6,8 valence proton pair, in addition to the usual S and D pairs. We calculate binding energies, excitation energies, electric quadrupole and magnetic dipole moments of low-lying states, and E2 transition rates between low-lying states. Our calculated results are reasonably consistent with available experimental data. The calculated quadrupole moments and magnetic moments, many of which have not yet been measured for these nuclei, are useful for future experimental measurements.

Xu, Z. Y.; Lei, Y. [Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Zhao, Y. M. [Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000 (China); CCAST, World Laboratory, P.O. Box 8730, Beijing 100080 (China); Xu, S. W.; Xie, Y. X. [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); Arima, A. [Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Science Museum, Japan Science Foundation, 2-1 Kitanomaru-koen, Chiyoda-ku, Tokyo 102-0091 (Japan)

2009-05-15T23:59:59.000Z

234

Distribution of Primes and of Interval Prime Pairs Based on $?$ Function  

E-Print Network (OSTI)

$\\Theta$ function is defined based upon Kronecher symbol. In light of the principle of inclusion-exclusion, $\\Theta$ function of sine function is used to denote the distribution of composites and primes. The structure of Goldbach Conjecture has been analyzed, and $\\Xi$ function is brought forward by the linear diophantine equation; by relating to $\\Theta$ function, the interval distribution of composite pairs and prime pairs (i.e. the Goldbach Conjecture) is thus obtained. In the end, Abel's Theorem (Multiplication of Series) is used to discuss the lower limit of the distribution of the interval prime pairs.

Yifang Fan; Zhiyu Li

2010-04-19T23:59:59.000Z

235

Two-photon interference of photon pairs created in photonic crystal fibers  

E-Print Network (OSTI)

We investigate a method to produce photon pairs by four-wave mixing in photonic crystal fibers (PCFs). By controlling the wavelength of the pump light, which determines the phase matching condition for four-wave mixing, we can obtain a broader spectrum of photon pairs than undesired Raman-scattered photons. We observe two-photon interference of photon pairs from a PCF with the help of an unbalanced Mach-Zehnder interferometer. Two-photon interference fringes with 83% visibility, which exceeds the classical limit of 50%, are obtained.

Toshihiro Nakanishi; Kazuo Sakemi; Hirokazu Kobayashi; Kazuhiko Sugiyama; Masao Kitano

2009-02-01T23:59:59.000Z

236

Almost optimal pairing strategy for Tic-Tac-Toe with numerous directions  

E-Print Network (OSTI)

We show that there is an $m=2n+o(n)$, such that, in the Maker-Breaker game played on $\\Z^d$ where Maker needs to put at least $m$ of his marks consecutively in one of $n$ given winning directions, Breaker can force a draw using a pairing strategy. This improves the result of Kruczek and Sundberg who showed that such a pairing strategy exits if $m\\ge 3n$. A simple argument shows that $m$ has to be at least $2n+1$ if Breaker is only allowed to use a pairing strategy, thus the main term of our bound is optimal.

Mukkamala, Padmini

2010-01-01T23:59:59.000Z

237

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Methane (CH 4 ) ZA 0.62334 E GeV b brems b pair b nucl b tot 2. 0.2088 0.0873 0.4904 0.7865 5. 0.2841 0.2205 0.5178 1.0224 10. 0.3477 0.3424 0.5009 1.1909 20. 0.4158 0.4754...

238

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

fluoride (LiF) ZA 0.46262 E GeV b brems b pair b nucl b tot 2. 0.2703 0.1209 0.4631 0.8543 5. 0.3668 0.2972 0.4895 1.1536 10. 0.4464 0.4463 0.4751 1.3679 20. 0.5299 0.6083...

239

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

fluoride (CaF 2 ) ZA 0.49670 E GeV b brems b pair b nucl b tot 2. 0.5234 0.2436 0.4381 1.2051 5. 0.7116 0.5985 0.4659 1.7760 10. 0.8649 0.8837 0.4539 2.2026 20. 1.0236 1.1853...

240

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

fluoride (BaF 2 ) ZA 0.42207 E GeV b brems b pair b nucl b tot 2. 1.1904 0.4473 0.3939 2.0317 5. 1.6414 1.3428 0.4200 3.4042 10. 2.0088 2.0396 0.4108 4.4591 20. 2.3862 2.7132...

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

fluoride CH 2 CHF 2 n ZA 0.49973 E GeV b brems b pair b nucl b tot 2. 0.2888 0.1285 0.4625 0.8800 5. 0.3917 0.3160 0.4897 1.1974 10. 0.4765 0.4748 0.4755 1.4269 20. 0.5656...

242

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

fluoride MgF 2 ZA 0.48153 E GeV b brems b pair b nucl b tot 2. 0.3729 0.1703 0.4493 0.9925 5. 0.5058 0.4161 0.4767 1.3985 10. 0.6144 0.6183 0.4638 1.6966 20. 0.7276 0.8364...

243

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

fluoride (CsF) ZA 0.42132 E GeV b brems b pair b nucl b tot 2. 1.2915 0.4882 0.3881 2.1679 5. 1.7810 1.4610 0.4141 3.6561 10. 2.1794 2.2166 0.4053 4.8014 20. 2.5885 2.9458...

244

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Ethanol (C 2 H 5 OH) ZA 0.56437 E GeV b brems b pair b nucl b tot 2. 0.2493 0.1077 0.4770 0.8341 5. 0.3385 0.2678 0.5044 1.1107 10. 0.4126 0.4080 0.4888 1.3095 20. 0.4912...

245

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

E GeV b brems b pair b nucl b tot 2. 0.2843 0.1249 0.4706 0.8798 5. 0.3858 0.3088 0.4982 1.1927 10. 0.4697 0.4666 0.4832 1.4195 20. 0.5582 0.6382 0.4608 1.6572 50. 0.6786...

246

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Air (dry, 1 atm) ZA 0.49919 E GeV b brems b pair b nucl b tot 2. 0.2898 0.1282 0.4628 0.8808 5. 0.3927 0.3151 0.4901 1.1979 10. 0.4774 0.4735 0.4758 1.4267 20. 0.5663 0.6460...

247

Automatic Analysis of Stereoscopic Satellite Image Pairs for Determination of Cloud-Top Height and Structure  

Science Conference Proceedings (OSTI)

A massively parallel processor (MPP) computer has made it practical to do automatic stereo analysis of cloud-top heights from stereoscopic satellite image pairs. The automatic analysis is of equivalent quality to manual analysis while taking ...

A. F. Hasler; J. Strong; R. H. Woodward; H. Pierce

1991-03-01T23:59:59.000Z

248

The power of linkage analysis of a disease-related endophenotype using asymmetrically ascertained sib pairs  

Science Conference Proceedings (OSTI)

A linkage study of a qualitative disease endophenotype in a sample of sib pairs, consisting of one disease affected proband and one sibling is considered. The linkage statistic compares marker allele sharing with the proband in siblings with an abnormal ...

Heejong Sung; Fei Ji; Deborah L. Levy; Steven Matthysse; Nancy Role Mendell

2009-03-01T23:59:59.000Z

249

A versatile waveguide source of photon pairs for chip-scale ...  

Science Conference Proceedings (OSTI)

... SD Dyer, MJ Stevens, B. Baek, and SW Nam, High-efficiency, ultra low-noise all-fiber photon-pair source, Opt. Express 16, 9966-9977 (2008). 30. ...

2010-08-19T23:59:59.000Z

250

Which Is Better, an Ensemble of PositiveNegative Pairs or a Centered Spherical Simplex Ensemble?  

Science Conference Proceedings (OSTI)

New methods to center the initial ensemble perturbations on the analysis are introduced and compared with the commonly used centering method of positivenegative paired perturbations. In the new method, one linearly dependent perturbation is ...

Xuguang Wang; Craig H. Bishop; Simon J. Julier

2004-07-01T23:59:59.000Z

251

Composite pairing in a mixed-valent two-channel Anderson model  

E-Print Network (OSTI)

Using a two-channel Anderson model, we develop a theory of composite pairing in the 115 family of heavy fermion superconductors that incorporates the effects of f-electron valence fluctuations. Our calculations introduce ...

Nevidomskyy, Andriy H.

252

Applications of correlated photon pairs : sub-shot noise interferometry and entanglement  

E-Print Network (OSTI)

Using cesium atoms weakly coupled to a low-finesse cavity, we have generated photon pairs that are highly correlated in a non-classical way, as demonstrated by a large violation of the Cauchy-Schwartz inequality G = 760 ...

Loh, Huanqian

2006-01-01T23:59:59.000Z

253

Fermionic superfluids : from cold atoms to high density QCD : gapless (breached pair) superfluidity and kaon condensation  

E-Print Network (OSTI)

In this thesis, we explore aspects of fermionic superfluidity through a mean-field approximation. Our framework is extremely general, includes both pairing and Hartree-Fock contributions, and is derived rigorously from a ...

Forbes, Michael McNeil

2005-01-01T23:59:59.000Z

254

Symmetrization of the Coulomb pairing potential by electron-phonon interaction  

Science Conference Proceedings (OSTI)

It is shown that the Coulomb superconducting pairing in systems with the Fermi contour nesting can be described by a quasi-one-dimensional potential oscillating in real space. The supplement of this repulsive potential with an isotropic pairing attraction corresponding to the phonon superconductivity mechanism and including the effect of predominant forward scattering upon electron-phonon interaction leads to symmetrization of this potential and a considerable increase in the superconducting transition temperature.

Belyavsky, V. I., E-mail: vib45@mail.ru; Kapaev, V. V.; Kopaev, Yu. V.; Mikhailyan, D. I. [Russian Academy of Sciences, Lebedev Physics Institute (Russian Federation)

2012-08-15T23:59:59.000Z

255

Reaction operators for spin-selective chemical reactions of radical pairs  

E-Print Network (OSTI)

Spin-selective reactions of radical pairs have traditionally been modelled theoretically by adding phenomenological rate equations to the quantum mechanical equation of motion of the radical pair spin density matrix. More recently an alternative set of rate expressions, based on a quantum measurement approach, has been suggested. Here we show how these two reaction operators can be seen as limiting cases of a more general reaction scheme.

Jones, Jonathan A; Hore, Peter J

2011-01-01T23:59:59.000Z

256

Reaction operators for spin-selective chemical reactions of radical pairs  

E-Print Network (OSTI)

Spin-selective reactions of radical pairs have traditionally been modelled theoretically by adding phenomenological rate equations to the quantum mechanical equation of motion of the radical pair spin density matrix. More recently an alternative set of rate expressions, based on a quantum measurement approach, has been suggested. Here we show how these two reaction operators can be seen as limiting cases of a more general reaction scheme.

Jonathan A. Jones; Kiminori Maeda; Peter J. Hore

2011-03-30T23:59:59.000Z

257

Schwinger Pair Production in dS_2 and AdS_2  

E-Print Network (OSTI)

We study Schwinger pair production in scalar QED from a uniform electric field in dS_2 with scalar curvature R_{dS} = 2 H^2 and in AdS_2 with R_{AdS} = - 2 K^2. With suitable boundary conditions, we find that the pair-production rate is the same analytic function of the scalar curvature in both cases.

Sang Pyo Kim; Don N. Page

2008-03-18T23:59:59.000Z

258

Electron-Positron Pair Production in Space- or Time-Dependent Electric Fields  

E-Print Network (OSTI)

Treating the production of electron and positron pairs by a strong electric field from the vacuum as a quantum tunneling process we derive, in semiclassical approximation, a general expression for the pair production rate in a $z$-dependent electric field $E(z)$ pointing in the $z$-direction. We also allow for a smoothly varying magnetic field parallel to $E(z)$. The result is applied to a confined field $E(z)\

Kleinert, Hagen; Xue, She-Sheng

2008-01-01T23:59:59.000Z

259

Electron-Positron Pair Production in Space- or Time-Dependent Electric Fields  

E-Print Network (OSTI)

Treating the production of electron and positron pairs by a strong electric field from the vacuum as a quantum tunneling process we derive, in semiclassical approximation, a general expression for the pair production rate in a $z$-dependent electric field $E(z)$ pointing in the $z$-direction. We also allow for a smoothly varying magnetic field parallel to $E(z)$. The result is applied to a confined field $E(z)\

Hagen Kleinert; Remo Ruffini; She-Sheng Xue

2008-07-06T23:59:59.000Z

260

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in B-100 Bone-equivalent plastic Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.52740 1.450 85.9 0.05268 3.7365 0.1252 3.0420 3.4528 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.435 7.435 7.443 × 10 -1 14.0 MeV 5.616 × 10 1 5.803 5.803 1.360 × 10 0 20.0 MeV 6.802 × 10 1 4.535 4.535 2.543 × 10 0 30.0 MeV 8.509 × 10 1 3.521 3.521 5.080 × 10 0 40.0 MeV 1.003 × 10 2 3.008 3.008 8.173 × 10 0 80.0 MeV 1.527 × 10 2 2.256 2.256 2.401 × 10 1 100. MeV 1.764 × 10 2 2.115 2.115 3.319 × 10 1 140. MeV 2.218 × 10 2 1.971 1.971 5.287 × 10 1 200. MeV 2.868 × 10 2 1.889 1.889 8.408 × 10 1 300. MeV 3.917 × 10 2 1.859 0.000 1.859 1.376 × 10 2 314. MeV 4.065 × 10 2 1.859 0.000 1.859 Minimum ionization 400. MeV 4.945 × 10 2 1.866 0.000 1.866 1.913 × 10 2 800. MeV 8.995 × 10 2 1.940 0.000 0.000 1.940 4.016 × 10 2 1.00 GeV 1.101 × 10 3 1.973 0.000 0.000 1.974 5.037 × 10 2 1.40

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Sodium monoxide Na 2 O Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.48404 2.270 148.8 0.07501 3.6943 0.1652 2.9793 4.1892 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 6.330 6.330 8.793 × 10 -1 14.0 MeV 5.616 × 10 1 4.955 4.956 1.601 × 10 0 20.0 MeV 6.802 × 10 1 3.883 3.884 2.984 × 10 0 30.0 MeV 8.509 × 10 1 3.024 3.024 5.943 × 10 0 40.0 MeV 1.003 × 10 2 2.588 2.588 9.541 × 10 0 80.0 MeV 1.527 × 10 2 1.954 1.954 2.789 × 10 1 100. MeV 1.764 × 10 2 1.840 1.840 3.846 × 10 1 140. MeV 2.218 × 10 2 1.725 1.725 6.102 × 10 1 200. MeV 2.868 × 10 2 1.663 1.664 9.656 × 10 1 283. MeV 3.738 × 10 2 1.646 0.000 1.647 Minimum ionization 300. MeV 3.917 × 10 2 1.647 0.000 1.647 1.571 × 10 2 400. MeV 4.945 × 10 2 1.659 0.000 1.660 2.177 × 10 2 800. MeV 8.995 × 10 2 1.738 0.000 0.000 1.738 4.531 × 10 2 1.00 GeV 1.101 × 10 3 1.771 0.000 0.000 1.772 5.670 × 10 2 1.40 GeV 1.502

262

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Tissue-equivalent gas (Propane based) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.55027 1.826 × 10 -3 59.5 0.09802 3.5159 1.5139 3.9916 9.3529 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 8.132 8.132 6.782 × 10 -1 14.0 MeV 5.616 × 10 1 6.337 6.337 1.241 × 10 0 20.0 MeV 6.802 × 10 1 4.943 4.944 2.326 × 10 0 30.0 MeV 8.509 × 10 1 3.831 3.831 4.656 × 10 0 40.0 MeV 1.003 × 10 2 3.269 3.269 7.500 × 10 0 80.0 MeV 1.527 × 10 2 2.450 2.450 2.209 × 10 1 100. MeV 1.764 × 10 2 2.303 2.303 3.053 × 10 1 140. MeV 2.218 × 10 2 2.158 2.158 4.855 × 10 1 200. MeV 2.868 × 10 2 2.084 2.084 7.695 × 10 1 263. MeV 3.527 × 10 2 2.068 0.000 2.069 Minimum ionization 300. MeV 3.917 × 10 2 2.071 0.000 2.072 1.252 × 10 2 400. MeV 4.945 × 10 2 2.097 0.000 2.097 1.732 × 10 2 800. MeV 8.995 × 10 2 2.232 0.000 0.000 2.232 3.580 × 10 2 1.00 GeV 1.101 × 10 3 2.289 0.000 0.000 2.290

263

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Lead oxide (PbO) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.40323 9.530 766.7 0.19645 2.7299 0.0356 3.5456 6.2162 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 4.046 4.046 1.411 × 10 0 14.0 MeV 5.616 × 10 1 3.207 3.207 2.532 × 10 0 20.0 MeV 6.802 × 10 1 2.542 2.542 4.656 × 10 0 30.0 MeV 8.509 × 10 1 2.003 2.003 9.146 × 10 0 40.0 MeV 1.003 × 10 2 1.727 1.727 1.455 × 10 1 80.0 MeV 1.527 × 10 2 1.327 1.327 4.176 × 10 1 100. MeV 1.764 × 10 2 1.256 1.256 5.729 × 10 1 140. MeV 2.218 × 10 2 1.188 1.189 9.017 × 10 1 200. MeV 2.868 × 10 2 1.158 1.158 1.415 × 10 2 236. MeV 3.250 × 10 2 1.155 0.000 1.155 Minimum ionization 300. MeV 3.917 × 10 2 1.161 0.000 0.000 1.161 2.279 × 10 2 400. MeV 4.945 × 10 2 1.181 0.000 0.000 1.181 3.133 × 10 2 800. MeV 8.995 × 10 2 1.266 0.001 0.000 1.267 6.398 × 10 2 1.00 GeV 1.101 × 10 3 1.299 0.001 0.000 1.301 7.955 × 10 2 1.40

264

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Liquid argon (Ar) Z A [g/mol] ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 18 (Ar) 39.948 (1) 1.396 188.0 0.19559 3.0000 0.2000 3.0000 5.2146 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 5.687 5.687 9.833 × 10 -1 14.0 MeV 5.616 × 10 1 4.461 4.461 1.786 × 10 0 20.0 MeV 6.802 × 10 1 3.502 3.502 3.321 × 10 0 30.0 MeV 8.509 × 10 1 2.731 2.731 6.598 × 10 0 40.0 MeV 1.003 × 10 2 2.340 2.340 1.058 × 10 1 80.0 MeV 1.527 × 10 2 1.771 1.771 3.084 × 10 1 100. MeV 1.764 × 10 2 1.669 1.670 4.250 × 10 1 140. MeV 2.218 × 10 2 1.570 1.570 6.732 × 10 1 200. MeV 2.868 × 10 2 1.518 1.519 1.063 × 10 2 266. MeV 3.567 × 10 2 1.508 0.000 1.508 Minimum ionization 300. MeV 3.917 × 10 2 1.509 0.000 1.510 1.725 × 10 2 400. MeV 4.945 × 10 2 1.526 0.000 0.000 1.526 2.385 × 10 2 800. MeV 8.995 × 10 2 1.610 0.000 0.000 1.610 4.934 × 10 2 1.00 GeV 1.101 × 10 3 1.644 0.000 0.000 1.645 6.163

265

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Freon-13 (CF 3 Cl) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.47966 0.950 126.6 0.07238 3.5551 0.3659 3.2337 4.7483 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 6.416 6.416 8.659 × 10 -1 14.0 MeV 5.616 × 10 1 5.019 5.019 1.578 × 10 0 20.0 MeV 6.802 × 10 1 3.930 3.930 2.945 × 10 0 30.0 MeV 8.509 × 10 1 3.057 3.057 5.870 × 10 0 40.0 MeV 1.003 × 10 2 2.615 2.615 9.430 × 10 0 80.0 MeV 1.527 × 10 2 1.971 1.971 2.760 × 10 1 100. MeV 1.764 × 10 2 1.857 1.857 3.809 × 10 1 140. MeV 2.218 × 10 2 1.745 1.745 6.041 × 10 1 200. MeV 2.868 × 10 2 1.685 1.685 9.551 × 10 1 283. MeV 3.738 × 10 2 1.668 0.000 1.668 Minimum ionization 300. MeV 3.917 × 10 2 1.668 0.000 1.668 1.553 × 10 2 400. MeV 4.945 × 10 2 1.681 0.000 1.681 2.151 × 10 2 800. MeV 8.995 × 10 2 1.762 0.000 0.000 1.763 4.473 × 10 2 1.00 GeV 1.101 × 10 3 1.796 0.000 0.000 1.797 5.596 × 10 2 1.40 GeV 1.502

266

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Lutetium silicon oxide [Lu 2 SiO 5 ] Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.42793 7.400 472.0 0.20623 3.0000 0.2732 3.0000 5.4394 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 4.679 4.679 1.209 × 10 0 14.0 MeV 5.616 × 10 1 3.692 3.693 2.181 × 10 0 20.0 MeV 6.802 × 10 1 2.916 2.916 4.029 × 10 0 30.0 MeV 8.509 × 10 1 2.287 2.287 7.953 × 10 0 40.0 MeV 1.003 × 10 2 1.968 1.968 1.270 × 10 1 80.0 MeV 1.527 × 10 2 1.503 1.503 3.666 × 10 1 100. MeV 1.764 × 10 2 1.421 1.422 5.038 × 10 1 140. MeV 2.218 × 10 2 1.344 1.344 7.944 × 10 1 200. MeV 2.868 × 10 2 1.308 1.308 1.248 × 10 2 242. MeV 3.316 × 10 2 1.304 1.304 Minimum ionization 300. MeV 3.917 × 10 2 1.309 0.000 0.000 1.309 2.014 × 10 2 400. MeV 4.945 × 10 2 1.329 0.000 0.000 1.329 2.773 × 10 2 800. MeV 8.995 × 10 2 1.415 0.001 0.000 1.416 5.684 × 10 2 1.00 GeV 1.101 × 10 3 1.449 0.001 0.000 1.450 7.080

267

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Boron oxide (B 2 O 3 ) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.49839 1.812 99.6 0.11548 3.3832 0.1843 2.7379 3.6027 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 6.889 6.889 8.045 × 10 -1 14.0 MeV 5.616 × 10 1 5.381 5.381 1.468 × 10 0 20.0 MeV 6.802 × 10 1 4.208 4.208 2.744 × 10 0 30.0 MeV 8.509 × 10 1 3.269 3.269 5.477 × 10 0 40.0 MeV 1.003 × 10 2 2.794 2.794 8.807 × 10 0 80.0 MeV 1.527 × 10 2 2.102 2.103 2.583 × 10 1 100. MeV 1.764 × 10 2 1.975 1.975 3.567 × 10 1 140. MeV 2.218 × 10 2 1.843 1.843 5.674 × 10 1 200. MeV 2.868 × 10 2 1.768 1.768 9.010 × 10 1 300. MeV 3.917 × 10 2 1.742 0.000 1.742 1.472 × 10 2 307. MeV 3.990 × 10 2 1.742 0.000 1.742 Minimum ionization 400. MeV 4.945 × 10 2 1.750 0.000 1.750 2.045 × 10 2 800. MeV 8.995 × 10 2 1.822 0.000 0.000 1.823 4.285 × 10 2 1.00 GeV 1.101 × 10 3 1.854 0.000 0.000 1.855 5.373 × 10 2 1.40 GeV 1.502

268

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Liquid H-note density shift (H 2 ) Z A [g/mol] ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 1 (H) 1.00794 (7) 7.080 × 10 -2 21.8 0.32969 3.0000 0.1641 1.9641 2.6783 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 16.508 16.508 3.316 × 10 -1 14.0 MeV 5.616 × 10 1 12.812 12.812 6.097 × 10 -1 20.0 MeV 6.802 × 10 1 9.956 9.956 1.147 × 10 0 30.0 MeV 8.509 × 10 1 7.684 7.684 2.307 × 10 0 40.0 MeV 1.003 × 10 2 6.539 6.539 3.727 × 10 0 80.0 MeV 1.527 × 10 2 4.870 4.870 1.105 × 10 1 100. MeV 1.764 × 10 2 4.550 4.550 1.531 × 10 1 140. MeV 2.218 × 10 2 4.217 4.217 2.448 × 10 1 200. MeV 2.868 × 10 2 4.018 0.000 4.018 3.912 × 10 1 300. MeV 3.917 × 10 2 3.926 0.000 3.926 6.438 × 10 1 356. MeV 4.497 × 10 2 3.919 0.000 3.919 Minimum ionization 400. MeV 4.945 × 10 2 3.922 0.000 3.922 8.988 × 10 1 800. MeV 8.995 × 10 2 4.029 0.000 4.030 1.906 × 10 2 1.00 GeV 1.101 × 10 3 4.084 0.001

269

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Cortical bone (ICRP) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.52130 1.850 106.4 0.06198 3.5919 0.1161 3.0919 3.6488 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.142 7.142 7.765 × 10 -1 14.0 MeV 5.616 × 10 1 5.581 5.581 1.417 × 10 0 20.0 MeV 6.802 × 10 1 4.366 4.366 2.646 × 10 0 30.0 MeV 8.509 × 10 1 3.393 3.393 5.281 × 10 0 40.0 MeV 1.003 × 10 2 2.900 2.901 8.489 × 10 0 80.0 MeV 1.527 × 10 2 2.179 2.179 2.489 × 10 1 100. MeV 1.764 × 10 2 2.044 2.044 3.440 × 10 1 140. MeV 2.218 × 10 2 1.907 1.907 5.475 × 10 1 200. MeV 2.868 × 10 2 1.830 1.830 8.700 × 10 1 300. MeV 3.917 × 10 2 1.803 0.000 1.803 1.422 × 10 2 303. MeV 3.950 × 10 2 1.803 0.000 1.803 Minimum ionization 400. MeV 4.945 × 10 2 1.812 0.000 1.812 1.976 × 10 2 800. MeV 8.995 × 10 2 1.888 0.000 0.000 1.889 4.138 × 10 2 1.00 GeV 1.101 × 10 3 1.922 0.000 0.000 1.923 5.187 × 10 2 1.40 GeV 1.502

270

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Freon-13B1 (CF 3 Br) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.45665 1.500 210.5 0.03925 3.7194 0.3522 3.7554 5.3555 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 5.678 5.678 9.844 × 10 -1 14.0 MeV 5.616 × 10 1 4.454 4.454 1.788 × 10 0 20.0 MeV 6.802 × 10 1 3.498 3.498 3.325 × 10 0 30.0 MeV 8.509 × 10 1 2.729 2.729 6.606 × 10 0 40.0 MeV 1.003 × 10 2 2.339 2.339 1.059 × 10 1 80.0 MeV 1.527 × 10 2 1.771 1.771 3.086 × 10 1 100. MeV 1.764 × 10 2 1.671 1.671 4.251 × 10 1 140. MeV 2.218 × 10 2 1.574 1.574 6.729 × 10 1 200. MeV 2.868 × 10 2 1.524 1.524 1.062 × 10 2 266. MeV 3.567 × 10 2 1.513 0.000 1.513 Minimum ionization 300. MeV 3.917 × 10 2 1.515 0.000 1.515 1.721 × 10 2 400. MeV 4.945 × 10 2 1.531 0.000 0.000 1.532 2.378 × 10 2 800. MeV 8.995 × 10 2 1.616 0.000 0.000 1.616 4.919 × 10 2 1.00 GeV 1.101 × 10 3 1.650 0.001 0.000 1.651 6.142 × 10 2 1.40 GeV

271

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Sodium carbonate (Na 2 CO 3 ) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.49062 2.532 125.0 0.08715 3.5638 0.1287 2.8591 3.7178 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 6.575 6.575 8.449 × 10 -1 14.0 MeV 5.616 × 10 1 5.142 5.142 1.540 × 10 0 20.0 MeV 6.802 × 10 1 4.026 4.026 2.874 × 10 0 30.0 MeV 8.509 × 10 1 3.131 3.131 5.729 × 10 0 40.0 MeV 1.003 × 10 2 2.679 2.679 9.204 × 10 0 80.0 MeV 1.527 × 10 2 2.017 2.017 2.695 × 10 1 100. MeV 1.764 × 10 2 1.895 1.895 3.721 × 10 1 140. MeV 2.218 × 10 2 1.771 1.772 5.914 × 10 1 200. MeV 2.868 × 10 2 1.703 1.703 9.381 × 10 1 298. MeV 3.894 × 10 2 1.681 0.000 1.681 Minimum ionization 300. MeV 3.917 × 10 2 1.681 0.000 1.681 1.531 × 10 2 400. MeV 4.945 × 10 2 1.690 0.000 1.691 2.125 × 10 2 800. MeV 8.995 × 10 2 1.764 0.000 0.000 1.764 4.440 × 10 2 1.00 GeV 1.101 × 10 3 1.796 0.000 0.000 1.797 5.563 × 10 2 1.40

272

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Tungsten hexafluoride (WF 6 ) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.42976 2.400 354.4 0.03658 3.5134 0.3020 4.2602 5.9881 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 4.928 4.928 1.143 × 10 0 14.0 MeV 5.616 × 10 1 3.880 3.880 2.067 × 10 0 20.0 MeV 6.802 × 10 1 3.057 3.057 3.828 × 10 0 30.0 MeV 8.509 × 10 1 2.393 2.393 7.574 × 10 0 40.0 MeV 1.003 × 10 2 2.056 2.056 1.211 × 10 1 80.0 MeV 1.527 × 10 2 1.565 1.565 3.509 × 10 1 100. MeV 1.764 × 10 2 1.479 1.479 4.827 × 10 1 140. MeV 2.218 × 10 2 1.396 1.396 7.623 × 10 1 200. MeV 2.868 × 10 2 1.353 1.353 1.200 × 10 2 253. MeV 3.431 × 10 2 1.346 0.000 1.346 Minimum ionization 300. MeV 3.917 × 10 2 1.349 0.000 0.000 1.349 1.942 × 10 2 400. MeV 4.945 × 10 2 1.367 0.000 0.000 1.367 2.679 × 10 2 800. MeV 8.995 × 10 2 1.451 0.001 0.000 1.452 5.516 × 10 2 1.00 GeV 1.101 × 10 3 1.485 0.001 0.000 1.486 6.877

273

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Standard rock Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.50000 2.650 136.4 0.08301 3.4120 0.0492 3.0549 3.7738 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 6.619 6.619 8.400 × 10 -1 14.0 MeV 5.616 × 10 1 5.180 5.180 1.530 × 10 0 20.0 MeV 6.802 × 10 1 4.057 4.057 2.854 × 10 0 30.0 MeV 8.509 × 10 1 3.157 3.157 5.687 × 10 0 40.0 MeV 1.003 × 10 2 2.701 2.702 9.133 × 10 0 80.0 MeV 1.527 × 10 2 2.028 2.029 2.675 × 10 1 100. MeV 1.764 × 10 2 1.904 1.904 3.695 × 10 1 140. MeV 2.218 × 10 2 1.779 1.779 5.878 × 10 1 200. MeV 2.868 × 10 2 1.710 1.710 9.331 × 10 1 297. MeV 3.884 × 10 2 1.688 0.000 1.688 Minimum ionization 300. MeV 3.917 × 10 2 1.688 0.000 1.688 1.523 × 10 2 400. MeV 4.945 × 10 2 1.698 0.000 1.698 2.114 × 10 2 800. MeV 8.995 × 10 2 1.774 0.000 0.000 1.775 4.418 × 10 2 1.00 GeV 1.101 × 10 3 1.808 0.000 0.000 1.808 5.534 × 10 2 1.40 GeV 1.502 × 10

274

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Ceric sulfate dosimeter solution Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.55279 1.030 76.7 0.07666 3.5607 0.2363 2.8769 3.5212 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.909 7.909 6.989 × 10 -1 14.0 MeV 5.616 × 10 1 6.170 6.170 1.278 × 10 0 20.0 MeV 6.802 × 10 1 4.819 4.819 2.391 × 10 0 30.0 MeV 8.509 × 10 1 3.739 3.739 4.779 × 10 0 40.0 MeV 1.003 × 10 2 3.193 3.193 7.693 × 10 0 80.0 MeV 1.527 × 10 2 2.398 2.398 2.261 × 10 1 100. MeV 1.764 × 10 2 2.255 2.255 3.123 × 10 1 140. MeV 2.218 × 10 2 2.102 2.102 4.968 × 10 1 200. MeV 2.868 × 10 2 2.013 2.014 7.896 × 10 1 300. MeV 3.917 × 10 2 1.980 0.000 1.980 1.292 × 10 2 317. MeV 4.096 × 10 2 1.979 0.000 1.979 Minimum ionization 400. MeV 4.945 × 10 2 1.986 0.000 1.986 1.797 × 10 2 800. MeV 8.995 × 10 2 2.062 0.000 0.000 2.062 3.774 × 10 2 1.00 GeV 1.101 × 10 3 2.096 0.000 0.000 2.097 4.735 × 10

275

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Propane (C 3 H 8 ) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.58962 1.868 × 10 -3 47.1 0.09916 3.5920 1.4339 3.8011 8.7939 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 8.969 8.969 6.137 × 10 -1 14.0 MeV 5.616 × 10 1 6.982 6.982 1.125 × 10 0 20.0 MeV 6.802 × 10 1 5.441 5.441 2.109 × 10 0 30.0 MeV 8.509 × 10 1 4.212 4.213 4.228 × 10 0 40.0 MeV 1.003 × 10 2 3.592 3.592 6.815 × 10 0 80.0 MeV 1.527 × 10 2 2.688 2.688 2.010 × 10 1 100. MeV 1.764 × 10 2 2.525 2.526 2.780 × 10 1 140. MeV 2.218 × 10 2 2.365 2.365 4.424 × 10 1 200. MeV 2.868 × 10 2 2.281 2.281 7.018 × 10 1 267. MeV 3.577 × 10 2 2.262 0.000 2.263 Minimum ionization 300. MeV 3.917 × 10 2 2.265 0.000 2.265 1.143 × 10 2 400. MeV 4.945 × 10 2 2.291 0.000 2.291 1.582 × 10 2 800. MeV 8.995 × 10 2 2.434 0.000 0.000 2.435 3.275 × 10 2 1.00 GeV 1.101 × 10 3 2.495 0.000 0.000 2.496 4.086 × 10 2 1.40 GeV 1.502

276

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Polystyrene ([C 6 H 5 CHCH 2 ] n ) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.53768 1.060 68.7 0.16454 3.2224 0.1647 2.5031 3.2999 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.803 7.803 7.077 × 10 -1 14.0 MeV 5.616 × 10 1 6.084 6.084 1.294 × 10 0 20.0 MeV 6.802 × 10 1 4.749 4.749 2.424 × 10 0 30.0 MeV 8.509 × 10 1 3.683 3.683 4.848 × 10 0 40.0 MeV 1.003 × 10 2 3.144 3.144 7.806 × 10 0 80.0 MeV 1.527 × 10 2 2.359 2.359 2.296 × 10 1 100. MeV 1.764 × 10 2 2.210 2.211 3.174 × 10 1 140. MeV 2.218 × 10 2 2.058 2.058 5.059 × 10 1 200. MeV 2.868 × 10 2 1.970 1.971 8.049 × 10 1 300. MeV 3.917 × 10 2 1.937 0.000 1.937 1.318 × 10 2 318. MeV 4.105 × 10 2 1.936 0.000 1.936 Minimum ionization 400. MeV 4.945 × 10 2 1.942 0.000 1.943 1.834 × 10 2 800. MeV 8.995 × 10 2 2.015 0.000 0.000 2.015 3.856 × 10 2 1.00 GeV 1.101 × 10 3 2.048 0.000 0.000 2.049 4.841 × 10 2 1.40

277

muonloss_068.dvi  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Erbium Z A [g/mol] ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 68 (Er) 167.259 (3) 9.026 658.0 0.24823 2.5573 0.0658 3.4932 5.9565 0.14 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 4.125 4.125 1.396 × 10 0 14.0 MeV 5.616 × 10 1 3.277 3.277 2.494 × 10 0 20.0 MeV 6.802 × 10 1 2.601 2.601 4.571 × 10 0 30.0 MeV 8.509 × 10 1 2.048 2.048 8.959 × 10 0 40.0 MeV 1.003 × 10 2 1.764 1.764 1.425 × 10 1 80.0 MeV 1.527 × 10 2 1.349 1.349 4.097 × 10 1 100. MeV 1.764 × 10 2 1.275 1.275 5.626 × 10 1 140. MeV 2.218 × 10 2 1.205 1.205 8.866 × 10 1 200. MeV 2.868 × 10 2 1.172 1.172 1.393 × 10 2 237. MeV 3.260 × 10 2 1.168 0.000 1.169 Minimum ionization 300. MeV 3.917 × 10 2 1.173 0.000 0.000 1.174 2.248 × 10 2 400. MeV 4.945 × 10 2 1.193 0.000 0.000 1.193 3.093 × 10 2 800. MeV 8.995 × 10 2 1.276 0.001 0.000 1.277 6.329 × 10 2 1.00 GeV 1.101 × 10 3 1.309 0.001 0.000 1.311 7.874 × 10

278

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Air (dry, 1 atm) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.49919 1.205 × 10 -3 85.7 0.10914 3.3994 1.7418 4.2759 10.5961 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.039 7.039 7.862 × 10 -1 14.0 MeV 5.616 × 10 1 5.494 5.495 1.436 × 10 0 20.0 MeV 6.802 × 10 1 4.294 4.294 2.686 × 10 0 30.0 MeV 8.509 × 10 1 3.333 3.333 5.366 × 10 0 40.0 MeV 1.003 × 10 2 2.847 2.847 8.633 × 10 0 80.0 MeV 1.527 × 10 2 2.140 2.140 2.535 × 10 1 100. MeV 1.764 × 10 2 2.013 2.014 3.501 × 10 1 140. MeV 2.218 × 10 2 1.889 1.889 5.562 × 10 1 200. MeV 2.868 × 10 2 1.827 1.827 8.803 × 10 1 257. MeV 3.471 × 10 2 1.815 0.000 1.816 Minimum ionization 300. MeV 3.917 × 10 2 1.819 0.000 1.819 1.430 × 10 2 400. MeV 4.945 × 10 2 1.844 0.000 1.844 1.977 × 10 2 800. MeV 8.995 × 10 2 1.968 0.000 0.000 1.968 4.074 × 10 2 1.00 GeV 1.101 × 10 3 2.020 0.000 0.000 2.021 5.077 × 10 2 1.40 GeV 1.502

279

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Lead tungstate (PbWO 4 ) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.41315 8.300 600.7 0.22758 3.0000 0.4068 3.0023 5.8528 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 4.333 4.333 1.311 × 10 0 14.0 MeV 5.616 × 10 1 3.426 3.426 2.360 × 10 0 20.0 MeV 6.802 × 10 1 2.710 2.711 4.350 × 10 0 30.0 MeV 8.509 × 10 1 2.131 2.131 8.566 × 10 0 40.0 MeV 1.003 × 10 2 1.835 1.835 1.365 × 10 1 80.0 MeV 1.527 × 10 2 1.406 1.406 3.931 × 10 1 100. MeV 1.764 × 10 2 1.331 1.331 5.397 × 10 1 140. MeV 2.218 × 10 2 1.261 1.261 8.498 × 10 1 200. MeV 2.868 × 10 2 1.231 1.231 1.333 × 10 2 227. MeV 3.154 × 10 2 1.229 1.230 Minimum ionization 300. MeV 3.917 × 10 2 1.237 0.000 0.000 1.238 2.145 × 10 2 400. MeV 4.945 × 10 2 1.260 0.000 0.000 1.260 2.946 × 10 2 800. MeV 8.995 × 10 2 1.349 0.001 0.000 1.350 6.007 × 10 2 1.00 GeV 1.101 × 10 3 1.383 0.001 0.000 1.385 7.469 × 10 2 1.40

280

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Carbon (compact) Z A [g/mol] ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 6 (C) [12.0107 (8)] 2.265 78.0 0.26142 2.8697 -0.0178 2.3415 2.8680 0.12 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.116 7.116 7.772 × 10 -1 14.0 MeV 5.616 × 10 1 5.549 5.549 1.420 × 10 0 20.0 MeV 6.802 × 10 1 4.331 4.331 2.658 × 10 0 30.0 MeV 8.509 × 10 1 3.355 3.355 5.318 × 10 0 40.0 MeV 1.003 × 10 2 2.861 2.861 8.567 × 10 0 80.0 MeV 1.527 × 10 2 2.126 2.127 2.531 × 10 1 100. MeV 1.764 × 10 2 1.991 1.992 3.505 × 10 1 140. MeV 2.218 × 10 2 1.854 1.854 5.597 × 10 1 200. MeV 2.868 × 10 2 1.775 1.775 8.917 × 10 1 300. MeV 3.917 × 10 2 1.745 0.000 1.745 1.462 × 10 2 317. MeV 4.096 × 10 2 1.745 0.000 1.745 Minimum ionization 400. MeV 4.945 × 10 2 1.751 0.000 1.751 2.034 × 10 2 800. MeV 8.995 × 10 2 1.819 0.000 0.000 1.820 4.275 × 10 2 1.00 GeV 1.101 × 10 3 1.850 0.000 0.000 1.851 5.365 × 10

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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281

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Muons Muons in Methanol (CH 3 OH) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.56176 0.791 67.6 0.08970 3.5477 0.2529 2.7639 3.5160 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 8.169 8.169 6.759 × 10 -1 14.0 MeV 5.616 × 10 1 6.369 6.369 1.236 × 10 0 20.0 MeV 6.802 × 10 1 4.972 4.972 2.315 × 10 0 30.0 MeV 8.509 × 10 1 3.855 3.855 4.631 × 10 0 40.0 MeV 1.003 × 10 2 3.291 3.291 7.457 × 10 0 80.0 MeV 1.527 × 10 2 2.469 2.469 2.194 × 10 1 100. MeV 1.764 × 10 2 2.321 2.322 3.032 × 10 1 140. MeV 2.218 × 10 2 2.166 2.166 4.823 × 10 1 200. MeV 2.868 × 10 2 2.074 2.074 7.664 × 10 1 300. MeV 3.917 × 10 2 2.039 0.000 2.039 1.254 × 10 2 318. MeV 4.105 × 10 2 2.038 0.000 2.039 Minimum ionization 400. MeV 4.945 × 10 2 2.045 0.000 2.045 1.744 × 10 2 800. MeV 8.995 × 10 2 2.121 0.000 0.000 2.122 3.665 × 10 2 1.00 GeV 1.101 × 10 3 2.156 0.000 0.000 2.157 4.600 × 10 2 1.40 GeV 1.502 ×

282

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Carbon (amorphous) Z A [g/mol] ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 6 (C) 12.0107 (8) 2.000 78.0 0.20240 3.0036 -0.0351 2.4860 2.9925 0.10 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.117 7.117 7.771 × 10 -1 14.0 MeV 5.616 × 10 1 5.550 5.551 1.420 × 10 0 20.0 MeV 6.802 × 10 1 4.332 4.332 2.658 × 10 0 30.0 MeV 8.509 × 10 1 3.357 3.357 5.317 × 10 0 40.0 MeV 1.003 × 10 2 2.862 2.862 8.564 × 10 0 80.0 MeV 1.527 × 10 2 2.129 2.129 2.529 × 10 1 100. MeV 1.764 × 10 2 1.994 1.994 3.502 × 10 1 140. MeV 2.218 × 10 2 1.857 1.857 5.591 × 10 1 200. MeV 2.868 × 10 2 1.778 1.779 8.905 × 10 1 300. MeV 3.917 × 10 2 1.749 0.000 1.749 1.459 × 10 2 313. MeV 4.055 × 10 2 1.749 0.000 1.749 Minimum ionization 400. MeV 4.945 × 10 2 1.755 0.000 1.756 2.030 × 10 2 800. MeV 8.995 × 10 2 1.824 0.000 0.000 1.825 4.266 × 10 2 1.00 GeV 1.101 × 10 3 1.855 0.000 0.000 1.856 5.353 × 10

283

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Mix D wax Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.56479 0.990 60.9 0.07490 3.6823 0.1371 2.7145 3.0780 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 8.322 8.322 6.628 × 10 -1 14.0 MeV 5.616 × 10 1 6.485 6.486 1.213 × 10 0 20.0 MeV 6.802 × 10 1 5.060 5.060 2.273 × 10 0 30.0 MeV 8.509 × 10 1 3.922 3.922 4.549 × 10 0 40.0 MeV 1.003 × 10 2 3.347 3.347 7.327 × 10 0 80.0 MeV 1.527 × 10 2 2.505 2.506 2.158 × 10 1 100. MeV 1.764 × 10 2 2.346 2.346 2.985 × 10 1 140. MeV 2.218 × 10 2 2.182 2.182 4.761 × 10 1 200. MeV 2.868 × 10 2 2.087 2.087 7.584 × 10 1 300. MeV 3.917 × 10 2 2.049 0.000 2.049 1.243 × 10 2 328. MeV 4.201 × 10 2 2.048 0.000 2.048 Minimum ionization 400. MeV 4.945 × 10 2 2.053 0.000 2.053 1.731 × 10 2 800. MeV 8.995 × 10 2 2.125 0.000 0.000 2.125 3.647 × 10 2 1.00 GeV 1.101 × 10 3 2.158 0.000 0.000 2.159 4.581 × 10 2 1.40 GeV 1.502 × 10 3 2.213

284

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Sodium nitrate NaNO 3 Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.49415 2.261 114.6 0.09391 3.5097 0.1534 2.8221 3.6502 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 6.702 6.702 8.281 × 10 -1 14.0 MeV 5.616 × 10 1 5.239 5.239 1.510 × 10 0 20.0 MeV 6.802 × 10 1 4.100 4.100 2.820 × 10 0 30.0 MeV 8.509 × 10 1 3.187 3.187 5.624 × 10 0 40.0 MeV 1.003 × 10 2 2.726 2.726 9.039 × 10 0 80.0 MeV 1.527 × 10 2 2.053 2.053 2.648 × 10 1 100. MeV 1.764 × 10 2 1.927 1.927 3.656 × 10 1 140. MeV 2.218 × 10 2 1.800 1.800 5.814 × 10 1 200. MeV 2.868 × 10 2 1.729 1.729 9.228 × 10 1 298. MeV 3.894 × 10 2 1.705 0.000 1.705 Minimum ionization 300. MeV 3.917 × 10 2 1.705 0.000 1.705 1.507 × 10 2 400. MeV 4.945 × 10 2 1.714 0.000 1.714 2.092 × 10 2 800. MeV 8.995 × 10 2 1.787 0.000 0.000 1.787 4.377 × 10 2 1.00 GeV 1.101 × 10 3 1.819 0.000 0.000 1.819 5.486 × 10 2 1.40 GeV 1.502

285

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Freon-12B2 (CF 2 Br 2 ) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.44901 1.800 284.9 0.05144 3.5565 0.3406 3.7956 5.7976 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 5.330 5.330 1.053 × 10 0 14.0 MeV 5.616 × 10 1 4.190 4.190 1.908 × 10 0 20.0 MeV 6.802 × 10 1 3.297 3.297 3.540 × 10 0 30.0 MeV 8.509 × 10 1 2.577 2.577 7.017 × 10 0 40.0 MeV 1.003 × 10 2 2.212 2.212 1.123 × 10 1 80.0 MeV 1.527 × 10 2 1.680 1.680 3.263 × 10 1 100. MeV 1.764 × 10 2 1.586 1.586 4.491 × 10 1 140. MeV 2.218 × 10 2 1.496 1.496 7.099 × 10 1 200. MeV 2.868 × 10 2 1.452 1.452 1.118 × 10 2 252. MeV 3.421 × 10 2 1.445 0.000 1.445 Minimum ionization 300. MeV 3.917 × 10 2 1.448 0.000 1.449 1.809 × 10 2 400. MeV 4.945 × 10 2 1.467 0.000 0.000 1.468 2.496 × 10 2 800. MeV 8.995 × 10 2 1.556 0.000 0.000 1.557 5.139 × 10 2 1.00 GeV 1.101 × 10 3 1.592 0.001 0.000 1.593 6.409 × 10 2 1.40 GeV

286

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Eye lens (ICRP) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.54977 1.100 73.3 0.09690 3.4550 0.2070 2.7446 3.3720 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.912 7.912 6.984 × 10 -1 14.0 MeV 5.616 × 10 1 6.171 6.171 1.277 × 10 0 20.0 MeV 6.802 × 10 1 4.819 4.819 2.390 × 10 0 30.0 MeV 8.509 × 10 1 3.738 3.738 4.779 × 10 0 40.0 MeV 1.003 × 10 2 3.192 3.192 7.693 × 10 0 80.0 MeV 1.527 × 10 2 2.396 2.396 2.262 × 10 1 100. MeV 1.764 × 10 2 2.251 2.251 3.125 × 10 1 140. MeV 2.218 × 10 2 2.095 2.096 4.976 × 10 1 200. MeV 2.868 × 10 2 2.006 2.006 7.914 × 10 1 300. MeV 3.917 × 10 2 1.971 0.000 1.971 1.296 × 10 2 318. MeV 4.105 × 10 2 1.971 0.000 1.971 Minimum ionization 400. MeV 4.945 × 10 2 1.977 0.000 1.977 1.803 × 10 2 800. MeV 8.995 × 10 2 2.051 0.000 0.000 2.051 3.790 × 10 2 1.00 GeV 1.101 × 10 3 2.085 0.000 0.000 2.085 4.756 × 10 2 1.40 GeV 1.502 × 10

287

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Compact bone (ICRU) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.53010 1.850 91.9 0.05822 3.6419 0.0944 3.0201 3.3390 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.406 7.406 7.477 × 10 -1 14.0 MeV 5.616 × 10 1 5.783 5.783 1.365 × 10 0 20.0 MeV 6.802 × 10 1 4.521 4.521 2.552 × 10 0 30.0 MeV 8.509 × 10 1 3.511 3.511 5.097 × 10 0 40.0 MeV 1.003 × 10 2 3.000 3.000 8.199 × 10 0 80.0 MeV 1.527 × 10 2 2.247 2.247 2.408 × 10 1 100. MeV 1.764 × 10 2 2.106 2.106 3.330 × 10 1 140. MeV 2.218 × 10 2 1.962 1.962 5.307 × 10 1 200. MeV 2.868 × 10 2 1.880 1.880 8.444 × 10 1 300. MeV 3.917 × 10 2 1.849 0.000 1.850 1.382 × 10 2 314. MeV 4.065 × 10 2 1.849 0.000 1.849 Minimum ionization 400. MeV 4.945 × 10 2 1.856 0.000 1.857 1.922 × 10 2 800. MeV 8.995 × 10 2 1.930 0.000 0.000 1.930 4.036 × 10 2 1.00 GeV 1.101 × 10 3 1.963 0.000 0.000 1.964 5.063 × 10 2 1.40 GeV 1.502

288

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NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Polyimide film (C 22 H 10 N 2 O 5 ) n Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.51264 1.420 79.6 0.15972 3.1921 0.1509 2.5631 3.3497 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.299 7.299 7.576 × 10 -1 14.0 MeV 5.616 × 10 1 5.695 5.695 1.385 × 10 0 20.0 MeV 6.802 × 10 1 4.449 4.449 2.590 × 10 0 30.0 MeV 8.509 × 10 1 3.453 3.453 5.177 × 10 0 40.0 MeV 1.003 × 10 2 2.949 2.949 8.332 × 10 0 80.0 MeV 1.527 × 10 2 2.214 2.214 2.448 × 10 1 100. MeV 1.764 × 10 2 2.074 2.074 3.384 × 10 1 140. MeV 2.218 × 10 2 1.932 1.932 5.392 × 10 1 200. MeV 2.868 × 10 2 1.851 1.851 8.577 × 10 1 300. MeV 3.917 × 10 2 1.820 0.000 1.820 1.404 × 10 2 314. MeV 4.065 × 10 2 1.820 0.000 1.820 Minimum ionization 400. MeV 4.945 × 10 2 1.826 0.000 1.827 1.953 × 10 2 800. MeV 8.995 × 10 2 1.897 0.000 0.000 1.898 4.102 × 10 2 1.00 GeV 1.101 × 10 3 1.929 0.000 0.000 1.930 5.147 × 10 2 1.40

289

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Silicon dioxide (fused quartz) (SiO 2 ) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.49930 2.200 139.2 0.08408 3.5064 0.1500 3.0140 4.0560 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 6.591 6.591 8.438 × 10 -1 14.0 MeV 5.616 × 10 1 5.158 5.158 1.537 × 10 0 20.0 MeV 6.802 × 10 1 4.041 4.041 2.866 × 10 0 30.0 MeV 8.509 × 10 1 3.145 3.145 5.710 × 10 0 40.0 MeV 1.003 × 10 2 2.691 2.691 9.170 × 10 0 80.0 MeV 1.527 × 10 2 2.030 2.030 2.682 × 10 1 100. MeV 1.764 × 10 2 1.908 1.908 3.701 × 10 1 140. MeV 2.218 × 10 2 1.786 1.786 5.878 × 10 1 200. MeV 2.868 × 10 2 1.719 1.719 9.315 × 10 1 288. MeV 3.788 × 10 2 1.699 0.000 1.699 Minimum ionization 300. MeV 3.917 × 10 2 1.699 0.000 1.699 1.518 × 10 2 400. MeV 4.945 × 10 2 1.711 0.000 1.711 2.105 × 10 2 800. MeV 8.995 × 10 2 1.789 0.000 0.000 1.790 4.391 × 10 2 1.00 GeV 1.101 × 10 3 1.823 0.000 0.000 1.824 5.497

290

Table  

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Muons Muons in Radon Z A [g/mol] ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 86 (Rn) [222.01758 (2)]9.066 × 10 -3 794.0 0.20798 2.7409 1.5368 4.9889 13.2839 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 3.782 3.782 1.535 × 10 0 14.0 MeV 5.616 × 10 1 3.018 3.018 2.730 × 10 0 20.0 MeV 6.802 × 10 1 2.405 2.405 4.980 × 10 0 30.0 MeV 8.509 × 10 1 1.902 1.902 9.715 × 10 0 40.0 MeV 1.003 × 10 2 1.644 1.644 1.540 × 10 1 80.0 MeV 1.527 × 10 2 1.267 1.267 4.394 × 10 1 100. MeV 1.764 × 10 2 1.201 1.201 6.019 × 10 1 140. MeV 2.218 × 10 2 1.140 1.140 9.452 × 10 1 200. MeV 2.868 × 10 2 1.116 1.117 1.479 × 10 2 216. MeV 3.039 × 10 2 1.116 1.116 Minimum ionization 300. MeV 3.917 × 10 2 1.127 0.000 0.000 1.128 2.372 × 10 2 400. MeV 4.945 × 10 2 1.154 0.000 0.000 1.154 3.249 × 10 2 800. MeV 8.995 × 10 2 1.258 0.001 0.000 1.260 6.559 × 10 2 1.00 GeV 1.101 × 10 3 1.300 0.001 0.000 1.302 8.119

291

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Solid carbon dioxide (dry ice; CO 2 ) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.49989 1.563 85.0 0.43387 3.0000 0.2000 2.0000 3.4513 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.057 7.057 7.841 × 10 -1 14.0 MeV 5.616 × 10 1 5.508 5.508 1.432 × 10 0 20.0 MeV 6.802 × 10 1 4.304 4.304 2.679 × 10 0 30.0 MeV 8.509 × 10 1 3.341 3.341 5.353 × 10 0 40.0 MeV 1.003 × 10 2 2.854 2.854 8.612 × 10 0 80.0 MeV 1.527 × 10 2 2.145 2.145 2.529 × 10 1 100. MeV 1.764 × 10 2 2.017 2.017 3.493 × 10 1 140. MeV 2.218 × 10 2 1.886 1.886 5.554 × 10 1 200. MeV 2.868 × 10 2 1.812 1.812 8.811 × 10 1 300. MeV 3.917 × 10 2 1.787 0.000 1.787 1.438 × 10 2 303. MeV 3.950 × 10 2 1.787 0.000 1.787 Minimum ionization 400. MeV 4.945 × 10 2 1.795 0.000 1.795 1.997 × 10 2 800. MeV 8.995 × 10 2 1.866 0.000 0.000 1.866 4.182 × 10 2 1.00 GeV 1.101 × 10 3 1.896 0.000 0.000 1.897 5.245 × 10

292

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Silicon Z A [g/mol] ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 14 (Si) 28.0855 (3) 2.329 173.0 0.14921 3.2546 0.2015 2.8716 4.4355 0.14 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 6.363 6.363 8.779 × 10 -1 14.0 MeV 5.616 × 10 1 4.987 4.987 1.595 × 10 0 20.0 MeV 6.802 × 10 1 3.912 3.912 2.969 × 10 0 30.0 MeV 8.509 × 10 1 3.047 3.047 5.905 × 10 0 40.0 MeV 1.003 × 10 2 2.608 2.608 9.476 × 10 0 80.0 MeV 1.527 × 10 2 1.965 1.965 2.770 × 10 1 100. MeV 1.764 × 10 2 1.849 1.849 3.822 × 10 1 140. MeV 2.218 × 10 2 1.737 1.737 6.064 × 10 1 200. MeV 2.868 × 10 2 1.678 1.678 9.590 × 10 1 273. MeV 3.633 × 10 2 1.664 0.000 1.664 Minimum ionization 300. MeV 3.917 × 10 2 1.665 0.000 1.666 1.559 × 10 2 400. MeV 4.945 × 10 2 1.681 0.000 1.681 2.157 × 10 2 800. MeV 8.995 × 10 2 1.767 0.000 0.000 1.768 4.475 × 10 2 1.00 GeV 1.101 × 10 3 1.803 0.000 0.000 1.804 5.595 × 10 2 1.40 GeV

293

muonloss_285.dvi  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Liquid oxygen (O 2 ) Z A [g/mol] ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 8 (O) 15.9994 (3) 1.141 95.0 0.52231 3.0000 0.2868 2.0000 3.9471 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 6.951 6.951 7.977 × 10 -1 14.0 MeV 5.616 × 10 1 5.429 5.430 1.456 × 10 0 20.0 MeV 6.802 × 10 1 4.246 4.246 2.720 × 10 0 30.0 MeV 8.509 × 10 1 3.298 3.298 5.429 × 10 0 40.0 MeV 1.003 × 10 2 2.818 2.819 8.731 × 10 0 80.0 MeV 1.527 × 10 2 2.120 2.120 2.561 × 10 1 100. MeV 1.764 × 10 2 1.995 1.995 3.536 × 10 1 140. MeV 2.218 × 10 2 1.873 1.873 5.615 × 10 1 200. MeV 2.868 × 10 2 1.807 1.807 8.888 × 10 1 287. MeV 3.779 × 10 2 1.788 0.000 1.788 Minimum ionization 300. MeV 3.917 × 10 2 1.788 0.000 1.789 1.447 × 10 2 400. MeV 4.945 × 10 2 1.801 0.000 1.801 2.004 × 10 2 800. MeV 8.995 × 10 2 1.879 0.000 0.000 1.880 4.177 × 10 2 1.00 GeV 1.101 × 10 3 1.912 0.000 0.000 1.912 5.232 × 10 2 1.40

294

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Polyethylene terephthalate (Mylar) (C 10 H 8 O 4 ) n Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.52037 1.400 78.7 0.12679 3.3076 0.1562 2.6507 3.3262 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.420 7.420 7.451 × 10 -1 14.0 MeV 5.616 × 10 1 5.789 5.789 1.362 × 10 0 20.0 MeV 6.802 × 10 1 4.522 4.522 2.548 × 10 0 30.0 MeV 8.509 × 10 1 3.509 3.509 5.093 × 10 0 40.0 MeV 1.003 × 10 2 2.997 2.997 8.197 × 10 0 80.0 MeV 1.527 × 10 2 2.250 2.250 2.409 × 10 1 100. MeV 1.764 × 10 2 2.108 2.108 3.329 × 10 1 140. MeV 2.218 × 10 2 1.963 1.964 5.305 × 10 1 200. MeV 2.868 × 10 2 1.880 1.880 8.440 × 10 1 300. MeV 3.917 × 10 2 1.849 0.000 1.849 1.382 × 10 2 317. MeV 4.096 × 10 2 1.848 0.000 1.849 Minimum ionization 400. MeV 4.945 × 10 2 1.855 0.000 1.855 1.922 × 10 2 800. MeV 8.995 × 10 2 1.926 0.000 0.000 1.926 4.039 × 10 2 1.00 GeV 1.101 × 10 3 1.958 0.000 0.000 1.959

295

Table  

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Muons Muons in Dichlorodiethyl ether C 4 Cl 2 H 8 O Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.51744 1.220 103.3 0.06799 3.5250 0.1773 3.1586 4.0135 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.117 7.117 7.789 × 10 -1 14.0 MeV 5.616 × 10 1 5.561 5.561 1.421 × 10 0 20.0 MeV 6.802 × 10 1 4.349 4.349 2.655 × 10 0 30.0 MeV 8.509 × 10 1 3.380 3.380 5.300 × 10 0 40.0 MeV 1.003 × 10 2 2.889 2.889 8.521 × 10 0 80.0 MeV 1.527 × 10 2 2.174 2.174 2.499 × 10 1 100. MeV 1.764 × 10 2 2.042 2.042 3.450 × 10 1 140. MeV 2.218 × 10 2 1.907 1.907 5.486 × 10 1 200. MeV 2.868 × 10 2 1.832 1.832 8.708 × 10 1 298. MeV 3.894 × 10 2 1.807 0.000 1.807 Minimum ionization 300. MeV 3.917 × 10 2 1.807 0.000 1.807 1.422 × 10 2 400. MeV 4.945 × 10 2 1.817 0.000 1.817 1.974 × 10 2 800. MeV 8.995 × 10 2 1.895 0.000 0.000 1.896 4.129 × 10 2 1.00 GeV 1.101 × 10 3 1.930 0.000 0.000 1.931 5.174 × 10

296

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Lead Z A [g/mol] ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 82 (Pb) 207.2 (1) 11.350 823.0 0.09359 3.1608 0.3776 3.8073 6.2018 0.14 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 3.823 3.823 1.524 × 10 0 14.0 MeV 5.616 × 10 1 3.054 3.054 2.705 × 10 0 20.0 MeV 6.802 × 10 1 2.436 2.436 4.927 × 10 0 30.0 MeV 8.509 × 10 1 1.928 1.928 9.600 × 10 0 40.0 MeV 1.003 × 10 2 1.666 1.666 1.521 × 10 1 80.0 MeV 1.527 × 10 2 1.283 1.283 4.338 × 10 1 100. MeV 1.764 × 10 2 1.215 1.215 5.943 × 10 1 140. MeV 2.218 × 10 2 1.151 1.152 9.339 × 10 1 200. MeV 2.868 × 10 2 1.124 1.124 1.463 × 10 2 226. MeV 3.145 × 10 2 1.122 0.000 1.123 Minimum ionization 300. MeV 3.917 × 10 2 1.130 0.000 0.000 1.131 2.352 × 10 2 400. MeV 4.945 × 10 2 1.151 0.000 0.000 1.152 3.228 × 10 2 800. MeV 8.995 × 10 2 1.237 0.001 0.000 1.238 6.572 × 10 2 1.00 GeV 1.101 × 10 3 1.270 0.001 0.000 1.272 8.165 × 10 2 1.40

297

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Sodium iodide (NaI) Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.42697 3.667 452.0 0.12516 3.0398 0.1203 3.5920 6.0572 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 4.703 4.703 1.202 × 10 0 14.0 MeV 5.616 × 10 1 3.710 3.710 2.169 × 10 0 20.0 MeV 6.802 × 10 1 2.928 2.928 4.009 × 10 0 30.0 MeV 8.509 × 10 1 2.297 2.297 7.917 × 10 0 40.0 MeV 1.003 × 10 2 1.975 1.975 1.264 × 10 1 80.0 MeV 1.527 × 10 2 1.509 1.509 3.652 × 10 1 100. MeV 1.764 × 10 2 1.427 1.427 5.019 × 10 1 140. MeV 2.218 × 10 2 1.347 1.348 7.916 × 10 1 200. MeV 2.868 × 10 2 1.310 1.310 1.245 × 10 2 243. MeV 3.325 × 10 2 1.305 1.305 Minimum ionization 300. MeV 3.917 × 10 2 1.310 0.000 0.000 1.310 2.010 × 10 2 400. MeV 4.945 × 10 2 1.329 0.000 0.000 1.330 2.768 × 10 2 800. MeV 8.995 × 10 2 1.417 0.001 0.000 1.418 5.677 × 10 2 1.00 GeV 1.101 × 10 3 1.452 0.001 0.000 1.453 7.070 × 10 2 1.40 GeV

298

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Polyvinyl alcohol (C 2 H3-O-H) n Z/A ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 0.54480 1.300 69.7 0.11178 3.3893 0.1401 2.6315 3.1115 0.00 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 7.891 7.891 6.999 × 10 -1 14.0 MeV 5.616 × 10 1 6.153 6.153 1.280 × 10 0 20.0 MeV 6.802 × 10 1 4.804 4.804 2.396 × 10 0 30.0 MeV 8.509 × 10 1 3.726 3.726 4.793 × 10 0 40.0 MeV 1.003 × 10 2 3.181 3.181 7.717 × 10 0 80.0 MeV 1.527 × 10 2 2.383 2.384 2.270 × 10 1 100. MeV 1.764 × 10 2 2.231 2.232 3.140 × 10 1 140. MeV 2.218 × 10 2 2.076 2.076 5.007 × 10 1 200. MeV 2.868 × 10 2 1.986 1.986 7.974 × 10 1 300. MeV 3.917 × 10 2 1.950 0.000 1.950 1.307 × 10 2 324. MeV 4.161 × 10 2 1.949 0.000 1.949 Minimum ionization 400. MeV 4.945 × 10 2 1.955 0.000 1.955 1.820 × 10 2 800. MeV 8.995 × 10 2 2.026 0.000 0.000 2.026 3.830 × 10 2 1.00 GeV 1.101 × 10 3 2.059 0.000 0.000 2.059 4.809 × 10 2 1.40

299

Table  

NLE Websites -- All DOE Office Websites (Extended Search)

Muons Muons in Cesium Z A [g/mol] ρ [g/cm 3 ] I [eV] a k = m s x 0 x 1 C δ 0 55 (Cs)132.9054519 (2) 1.873 488.0 0.18233 2.8866 0.5473 3.5914 6.9135 0.14 T p Ionization Brems Pair prod Photonucl Total CSDA range [MeV/c] [MeV cm 2 /g] [g/cm 2 ] 10.0 MeV 4.704 × 10 1 4.464 4.464 1.277 × 10 0 14.0 MeV 5.616 × 10 1 3.532 3.532 2.294 × 10 0 20.0 MeV 6.802 × 10 1 2.794 2.794 4.224 × 10 0 30.0 MeV 8.509 × 10 1 2.195 2.195 8.315 × 10 0 40.0 MeV 1.003 × 10 2 1.890 1.890 1.325 × 10 1 80.0 MeV 1.527 × 10 2 1.444 1.444 3.820 × 10 1 100. MeV 1.764 × 10 2 1.366 1.366 5.248 × 10 1 140. MeV 2.218 × 10 2 1.291 1.291 8.274 × 10 1 200. MeV 2.868 × 10 2 1.257 1.257 1.300 × 10 2 236. MeV 3.250 × 10 2 1.254 1.254 Minimum ionization 300. MeV 3.917 × 10 2 1.261 0.000 0.000 1.261 2.096 × 10 2 400. MeV 4.945 × 10 2 1.284 0.000 0.000 1.285 2.882 × 10 2 800. MeV 8.995 × 10 2 1.378 0.001 0.000 1.380 5.881 × 10 2 1.00 GeV 1.101 × 10 3 1.415 0.001 0.000 1.417 7.311 × 10 2

300

Beyond the Lone-Pair Model for Structurally Distorted Metal Oxides  

NLE Websites -- All DOE Office Websites (Extended Search)

Beyond the Lone-Pair Model for Structurally Distorted Metal Oxides Print Beyond the Lone-Pair Model for Structurally Distorted Metal Oxides Print "Ferroelectricity," by analogy to ferromagnetism, is defined as the presence of spontaneous electrical polarization in a material, often arising from distortions in the material's crystal structure. In oxides of the metals lead and bismuth, such distortions were for many years attributed to the existence of "lone pair" electrons: pairs of chemically inert, nonbonding valence electrons in hybrid orbitals that leave noticeable voids in the crystal structure. At the ALS, researchers from the U.K., Ireland, and the U.S. have now obtained definitive experimental evidence that this lone-pair model must be revised. High-resolution x-ray photoemission spectroscopy (XPS) and soft x-ray emission spectroscopy (XES) have clarified the subtle electronic origins of the prototypical distortions in these crystal structures. The results have important implications for the tantalizing possibility of spintronic or superconducting devices combining ferroelectric and ferromagnetic properties.

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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301

Beyond the Lone-Pair Model for Structurally Distorted Metal Oxides  

NLE Websites -- All DOE Office Websites (Extended Search)

Beyond the Lone-Pair Model for Structurally Distorted Metal Oxides Print Beyond the Lone-Pair Model for Structurally Distorted Metal Oxides Print "Ferroelectricity," by analogy to ferromagnetism, is defined as the presence of spontaneous electrical polarization in a material, often arising from distortions in the material's crystal structure. In oxides of the metals lead and bismuth, such distortions were for many years attributed to the existence of "lone pair" electrons: pairs of chemically inert, nonbonding valence electrons in hybrid orbitals that leave noticeable voids in the crystal structure. At the ALS, researchers from the U.K., Ireland, and the U.S. have now obtained definitive experimental evidence that this lone-pair model must be revised. High-resolution x-ray photoemission spectroscopy (XPS) and soft x-ray emission spectroscopy (XES) have clarified the subtle electronic origins of the prototypical distortions in these crystal structures. The results have important implications for the tantalizing possibility of spintronic or superconducting devices combining ferroelectric and ferromagnetic properties.

302

Signature of a Pairing Transition in the Heat Capacity of Finite Nuclei  

E-Print Network (OSTI)

The heat capacity of iron isotopes is calculated within the interacting shell model using the complete (pf + 0g9/2)-shell. We identify a signature of the pairing transition in the heat capacity that is correlated with the suppression of the number of spin-zero neutron pairs as the temperature increases. Our results are obtained by a novel method that significantly reduces the statistical errors in the heat capacity calculated by the shell model Monte Carlo approach. The Monte Carlo results are compared with finite-temperature Fermi gas and BCS calculations. Typeset using REVTEX 1 Pairing effects in finite nuclei are well known; examples include the energy gap in the spectra of even-even nuclei and an odd-even effect observed in nuclear masses. However, less is known about the thermal signatures of the pairing interaction in nuclei. In a macroscopic conductor, pairing leads to a phase transition from a normal metal to a superconductor below a certain critical temperature, and in the BCS theory [1] the heat capacity is characterized

S. Liu; Y. Alhassid

2000-01-01T23:59:59.000Z

303

Mechanics and Dynamics of X-Chromosome Pairing at X Inactivation  

E-Print Network (OSTI)

At the onset of X Chromosomes Inactivation, the vital process whereby female mammal cells equalize X products with respect to males, the X chromosomes are colocalized along their Xic (X-Inactivation Center) regions. The mechanism inducing recognition and pairing of the X's remains, though, elusive. Starting from recent discoveries on the molecular factors and on the DNA sequences (the so-called ``pairing sites'') involved, we dissect the mechanical basis of Xic colocalization by using a Statistical Physics model. We show that soluble DNA specific binding molecules, as those experimentally identified, can be indeed sufficient to induce the spontaneous colocalization of the homologous chromosomes, but only when their concentration, or chemical affinity, rises above a threshold value, as a consequence of a thermodynamic phase transition. We derive the likelihood of pairing and its probability distribution. Chromosome dynamics has two stages: an initial independent Brownian diffusion followed, after a characteristic time scale, by recognition and pairing. Finally, we investigate the effects of DNA deletion/insertions in the region of pairing sites and compare model predictions to available experimental data.

A. Scialdone; M. Nicodemi

2009-10-13T23:59:59.000Z

304

Interesting features of nonlinear shock equations in dissipative pair-ion-electron plasmas  

SciTech Connect

Two dimensional nonlinear electrostatic waves are studied in unmagnetized, dissipative pair-ion-electron plasmas in the presence of weak transverse perturbation. The dissipation in the system is taken into account by incorporating the kinematic viscosity of both positive and negative ions. In the linear case, a biquadratic dispersion relation is obtained, which yields the fast and slow modes in a pair-ion-electron plasma. It is shown that the limiting cases of electron-ion and pair-ion can be retrieved from the general biquadratic dispersion relation, and the differences in the characters of the waves propagating in both the cases are also highlighted. Using the small amplitude approximation method, the nonlinear Kadomtsev Petviashvili Burgers as well as Burgers-Kadomtsev Petviashvili equations are derived and their applicability for pair-ion-electron plasma is explained in detail. The present study may have relevance to understand the formation of two dimensional electrostatic shocks in laboratory produced pair-ion-electron plasmas.

Masood, W. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad 54000 (Pakistan); National Centre for Physics (NCP), Shahdara Valley Road, 44000 Islamabad (Pakistan); Rizvi, H. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad 54000 (Pakistan)

2011-09-15T23:59:59.000Z

305

Optimizing electron-positron pair production on kilojoule-class high-intensity lasers for the purpose of pair-plasma creation  

Science Conference Proceedings (OSTI)

Expressions for the yield of electron-positron pairs, their energy spectra, and production rates have been obtained in the interaction of multi-kJ pulses of high-intensity laser light interacting with solid targets. The Bethe-Heitler conversion of hard x-ray bremsstrahlung [D. A. Gryaznykh, Y. Z. Kandiev, and V. A. Lykov, JETP Lett. 67, 257 (1998); K. Nakashima and H. Takabe, Phys. Plasmas 9, 1505 (2002)] is shown to dominate over direct production (trident process) [E. P. Liang, S. C. Wilks, and M. Tabak, Phys. Rev. Lett. 81, 4887 (1998)]. The yields and production rates have been optimized as a function of incident laser intensity by the choice of target material and dimensions, indicating that up to 5x10{sup 11} pairs can be produced on the OMEGA EP laser system [L. J. Waxer et al., Opt. Photonics News 16, 30 (2005)]. The corresponding production rates are high enough to make possible the creation of a pair plasma.

Myatt, J.; Delettrez, J. A.; Maximov, A. V.; Meyerhofer, D. D.; Short, R. W.; Stoeckl, C.; Storm, M. [Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)

2009-06-15T23:59:59.000Z

306

Probing Material Reactivity Using X-ray Pair Distribution Function Methods  

NLE Websites -- All DOE Office Websites (Extended Search)

Material Reactivity Using X-ray Pair Distribution Material Reactivity Using X-ray Pair Distribution Function Methods Karena W. Chapman X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA Understanding how advanced functional materials react and transform, at an atomic scale, is a characterization challenge with many diverse phenomena possible; components with varying particle size, morphology, and microstructure can evolve from multi-atom clusters to multi-million atom crystals. The pair distribution function (PDF) method shows great promise for providing quantitative insight such reactions. Recent advances in experimental methods, have improved the efficiency of X-ray PDF measurements, to allow time-resolved experiments with sufficient resolution to study reactions in solid

307

A Method for Constructing a Lax Pair for the Ernst Equation  

E-Print Network (OSTI)

A systematic construction of a Lax pair and an infinite set of conservation laws for the Ernst equation is described. The matrix form of this equation is rewritten as a differential ideal of gl(2,R)-valued differential forms, and its symmetry condition is expressed as an exterior equation which is linear in the symmetry characteristic and has the form of a conservation law. By means of a recursive process, an infinite collection of such laws is then obtained, and the conserved "charges" are used to derive a linear exterior equation whose components constitute a Lax pair.

C. J. Papachristou; B. Kent Harrison

2008-05-09T23:59:59.000Z

308

Signature of a Pairing Transition in the Heat Capacity of Finite Nuclei  

E-Print Network (OSTI)

The heat capacity of iron isotopes is calculated within the interacting shell model using the complete $(pf+0g_{9/2})$-shell. We identify a signature of the pairing transition in the heat capacity that is correlated with the suppression of the number of spin-zero neutron pairs as the temperature increases. Our results are obtained by a novel method that significantly reduces the statistical errors in the heat capacity calculated by the shell model Monte Carlo approach. The Monte Carlo results are compared with finite-temperature Fermi gas and BCS calculations.

S. Liu; Y. Alhassid

2000-09-05T23:59:59.000Z

309

Slow light enhanced correlated photon pair generation in photonic-crystal coupled-resonator optical waveguides  

E-Print Network (OSTI)

We demonstrate the generation of quantum-correlated photon pairs from a Si photonic-crystal coupled-resonator optical waveguide. A slow-light supermode realized by the collective resonance of high-Q and small-mode-volume photonic-crystal cavities successfully enhanced the efficiency of the spontaneous four-wave mixing process. The generation rate of photon pairs was improved by two orders of magnitude compared with that of a photonic-crystal line defect waveguide without a slow-light effect.

Matsuda, Nobuyuki; Shimizu, Kaoru; Tokura, Yasuhiro; Kuramochi, Eiichi; Notomi, Masaya; 10.1364/OE.21.008596

2013-01-01T23:59:59.000Z

310

P-wave contribution to third-order top-quark pair production near threshold  

E-Print Network (OSTI)

The next-to-leading order (NLO) P-wave Coulomb Green function contributes at third-order to top-pair production in e+ e- collisions near threshold. In this paper we compute the NLO P-wave Green function in dimensional regularization, as required for a consistent combination with non-resonant production of the W+ W- b\\bar{b} final state, and present a phenomenological analysis of the P-wave contribution. We further briefly discuss squark production near threshold and top-pair production in gamma gamma collisions, where no S-wave contribution is present, and the P-wave thus constitutes the dominant production process.

M. Beneke; J. Piclum; T. Rauh

2013-12-17T23:59:59.000Z

311

Pairing in 4-component fermion systems: the bulk limit of SU(4)-symmetric Hamiltonians  

E-Print Network (OSTI)

Fermion systems with more than two components can exhibit pairing condensates of much more complex structure than the well-known single BCS condensate of spin-up and spin-down fermions. In the framework of the exactly solvable SO(8) Richardson-Gaudin model with SU(4)-symmetric Hamiltonians, we show that the BCS approximation remains valid in the thermodynamic limit of large systems for describing the ground state energy and the canonical and quasiparticle excitation gaps. Correlations beyond BCS pairing give rise to a spectrum of collective excitations, but these do not affect the bulk energy and quasiparticle gaps.

Bertsch, G F; Errea, B; Esebbag, C

2009-01-01T23:59:59.000Z

312

Two Higgs Pair Heterotic Vacua and Flavor-Changing Neutral Currents  

E-Print Network (OSTI)

We present a vacuum of heterotic M-theory whose observable sector has the MSSM spectrum with the addition of one extra pair of Higgs-Higgs conjugate superfields. The quarks/leptons have a realistic mass hierarchy with a naturally light first family. The double elliptic structure of the Calabi-Yau compactification threefold leads to two ``stringy'' selection rules. These classically disallow Yukawa couplings to the second Higgs pair and, hence, Higgs mediated flavor-changing neutral currents. Such currents are induced in higher-dimensional interactions, but are naturally suppressed. We show that our results fit comfortably below the observed upper bounds on neutral flavor-changing processes.

Michael Ambroso; Volker Braun; Burt A. Ovrut

2008-07-21T23:59:59.000Z

313

Extrinsic orbital angular momentum of entangled photon-pairs in spontaneous parametric down-conversion  

E-Print Network (OSTI)

Starting from the standard Hamiltonian describing the optical non-linear process of spontaneous parametric down-conversion, we theoretically show that the generated entangled photon-pairs carry non-negligible orbital angular momentum in the degrees of freedom of relative movement in the type-II cases due to spatial symmetry breaking. We also show that the orbital angular momentum carried by photon-pairs in these degrees of freedom escapes detection in the traditional measurement scheme, which demands development of new techniques for further experimental investigations.

Sheng Feng; Prem Kumar

2008-05-13T23:59:59.000Z

314

Validity of pair truncation of the nuclear shell model in {sup 46}Ca  

SciTech Connect

We study the validity of pair truncation of the nuclear shell model by using the semimagic nucleus {sup 46}Ca. We present low-lying states and their E2 transition rates based on both nucleon pair approximation (NPA) and exact shell-model (SM) calculations. We also calculate overlaps between wave functions of low-lying states calculated by using the NPA and those calculated by using the SM. Our calculated results show a remarkable agreement between the NPA results and the SM results, although the NPA is a drastic truncation of the SM.

Lei, Y.; Xu, Z. Y. [Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Zhao, Y. M. [Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000 (China); CCAST, World Laboratory, Post Office Box 8730, Beijing 100080 (China); Arima, A. [Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Science Museum, Japan Science Foundation, 2-1 Kitanomaru-koen, Chiyoda-ku, Tokyo 102-0091 (Japan)

2009-12-15T23:59:59.000Z

315

Coherently manipulating two-qubit quantum information using a pair of simultaneous laser pulses  

E-Print Network (OSTI)

Several sequential operations are usually needed for implementing controlled quantum gates and generating entanglement between a pair of quantum bits. Based on the conditional quantum dynamics for a two-ion system beyond the Lamb-Dicke limit, here we propose a theoretical scheme for manipulating two-qubit quantum information, i.e., implementing a universal two-qubit quantum gate and generating a two-qubit entangled state, by using a pair of simultaneous laser pulses. Neither the Lamb-Dicke approximation nor the auxiliary atomic level are required. The experimental realizability of this simple approach is also discussed.

L. F. Wei; Franco Nori

2004-11-18T23:59:59.000Z

316

Study of correlations between photoproduced pairs of charmed particles at Experiment E831/FOCUS  

SciTech Connect

The authors present the study of the charm-pair correlations produced in photon-nucleon interactions at = 175 GeV/c, by the Fermilab fixed target experiment E831/FOCUS. The E831/FOCUS experiment produced and reconstructed over one million charm particles. This high statistics allows the reconstruction of more than 7000 charm-pair mesons D{bar D}, 10 times the statistic of former experiments, and also allows to get, for the first time, about 600 totally reconstructed charm-pairs in the DD{sub s} and D{Lambda}{sub c} channels. They were able to study, with some detail, the kinematical correlations between the charm and anticharm particle forming a pair, in the square transverse momentum (p{sub T}{sup 2}), azimuthal angle difference ({Delta}{phi}), rapidity difference ({Delta}y) and the charm-pair mass variables. They observe some correlation for the longitudinal momenta, and a significant correlation for the transverse momenta of the charm and anticharm particles. They compare the experimental distributions with theoretical predictions based on the photon-gluon fusion model (PGF), for the production of c{bar c} quarks, and the standard Lund hadronization model. These models are implemented by the PYTHIA Monte Carlo event generator. The PYTHIA program allows the inclusion, in the simulation, of non-perturbative effects that have been shown to be important for charm production. In order to compare data and simulation, they have generated two Monte Carlo samples, the first one set to favor the production of D{bar D} pairs (MCDD2), and the second one set to favor the production of DD{sub s} and D{Lambda}{sub c} pairs, where each one uses different functions and parameters values for the theoretical models in the simulation. They observe, for the correlation distributions, that the set of parameters used by the MCDD2 model together with the intrinsic transverse momentum (k{sub {perpendicular}}) of the partons inside the nucleons, has a better agreement with data distributions than the one used by the MCDSLC model. Finally, the relative pair/anti-pair yield production ratio is calculated for five sets of charm-pairs, D{sup +}D{sup 0}, D{sup +}D{sub s}{sup -}, D{sup 0}D{sub s}{sup -}, D{sup +}{Lambda}{sub c}{sup -} e D{sup 0}{Lambda}{sub c}{sup -}, both for data as well as for the two Monte Carlo samples. They observe that the MCDSLC model predicts charm-pair yield production ratios closer to the yield ratios data than the MCDD2 model.

Castromonte Flores, Cesar Manuel; /Rio de Janeiro, CBPF

2008-08-01T23:59:59.000Z

317

Sector 27 35 Prod Schedule 11_3_13 Rev i.xlsx  

NLE Websites -- All DOE Office Websites (Extended Search)

Rev i date 11-13-13 Rev i date 11-13-13 Production Schedule For Sector 35 & 27 Contract No. 3G-30001, Rev F, 8/8/13 RE Hutch Number Eng Assigned Submittal Drawings Sent to Argonne Submittal Drawings Approved Fabrication Drawings Complete, Lead and Steel Ordered Steel and Lead Received, Fabrication Underway Fabrication Complete- Panels Ship on Dates Shown Panels Arrive at Argonne Field Installation of Panels Complete Field Installation of Roof, Floor Trims,Handr ail Painting Complete Electrical, PSS and Piping Complete Estimated Beneficial Occupancy from Orginal Contract Date 35-ID-B Troy M Complete Complete Complete Complete Complete Complete Complete Complete Complete Complete Complete 35-ID-C Jeff H Complete Complete Complete Complete Complete Complete Complete Complete Complete Complete Complete 35-ID-D

318

PROD. TYPE: COM PP:1-26 (col.fig.: nil) YJATH4210 + MODA  

E-Print Network (OSTI)

school (1923­1926) at Tiflis (Tbilissi), the capital of Georgia, and the Tbilissi Institute of Technology Caucasus, and later into refugee camps in Kalush andTorun in Poland. FromTorun, George was able to send

Liblit, Ben

319

Next-to-leading order QCD corrections to light Higgs Pair production via vector boson fusion  

E-Print Network (OSTI)

We present the NLO QCD corrections for light Higgs pair production via vector boson fusion at the LHC within the CP conserving type II two higgs doublet model in the form of a fully flexible parton--level Monte Carlo program. Scale dependences on integrated cross sections and distributions are reduced with QCD K-factors of order unity.

Terrance Figy

2008-06-13T23:59:59.000Z

320

QCD Corrections to Vector Boson Pair Production via Weak Boson Fusion  

E-Print Network (OSTI)

NLO-QCD corrections to vector boson pair production via weak boson fusion have recently been calculated and implemented into flexible parton-level Monte-Carlo programs. These allow for the computation of cross sections and kinematical distributions within realistic experimental cuts. We summarize the basic elements of the calculation and review phenomenological results for the LHC.

B. Jager; C. Oleari; D. Zeppenfeld

2006-08-24T23:59:59.000Z

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Iterated Peiffer pairings in the Moore complex of a simplicial group.  

E-Print Network (OSTI)

We introduce a pairing structure within the Moore complex NG of a simplicial group G and use it to investigate generators for NG_n\\cap D_n where D_n is the subgroup generated by degenerate elements. This is applied to the study of algebraic models for homotopy types.

A Mutlu; T Porter.

322

Stable pinching by a pair of robot fingers with soft tips under the effect of gravity  

Science Conference Proceedings (OSTI)

This paper analyses lumped-parameter dynamics of a pair of robot fingers with soft and deformable tips pinching a rigid object under the effect of a gravity force. The dynamics of the system in which area contacts between the finger-tips and the surfaces ... Keywords: Gravity, Lumped-parameter dynamics, Robot fingers, Soft tips, Stable pinching

Suguru Arimoto; Zoe Doulgeri; Pham Thuc Anh Nguyen; John Fasoulas

2002-05-01T23:59:59.000Z

323

The Jones-Hore theory of radical-ion-pair reactions is not self-consistent  

E-Print Network (OSTI)

It is shown that the master equation introduced by Jones & Hore and purported to describe radical-ion-pair reactions is not self-consistent. This is because the average of single-molecule realizations does not reproduce the predictions of the master equation.

Kominis, I K

2010-01-01T23:59:59.000Z

324

Afterglow emission from pair-loaded blast waves in gamma-ray bursts  

E-Print Network (OSTI)

The MeV radiation front of gamma-ray bursts creates copious e+- pairs as it propagates through an ambient medium. The created pairs enrich the leptonic component of the medium by a large factor at distances R load ~ 10^{16} cm from the burst center. The following blast wave sweeps up the pair-rich medium and then emits the observed afterglow radiation. We find that the afterglow has a "memory" of e+- loading outside R_load. The e+- pairs remain in the swept-up material and slowly cool down by emitting synchrotron radiation. They are likely to dominate the blast-wave emission in IR, optical, and UV bands during the first minutes of the observed afterglow. The expected e+- radiation is described by a simple formula, which is derived analytically and checked by numerical integration of synchrotron emission over the blast material; a suitable Lagrangian formalism is developed for such calculations. The main signature of e+- radiation is its flat ("white") spectrum in a broad range of frequencies from IR to UV and possibly soft X-rays. This radiation can be detected by Swift satellite, which would enable new observational tests for the explosion physics.

Andrei M. Beloborodov

2005-03-02T23:59:59.000Z

325

Construction of Hilbert Transform Pairs of Wavelet Bases and Gabor-like Transforms  

E-Print Network (OSTI)

We propose a novel method for constructing Hilbert transform (HT) pairs of wavelet bases based on a fundamental approximation-theoretic characterization of scaling functions--the B-spline factorization theorem. In particular, starting from well-localized scaling functions, we construct HT pairs of biorthogonal wavelet bases of L^2(R) by relating the corresponding wavelet filters via a discrete form of the continuous HT filter. As a concrete application of this methodology, we identify HT pairs of spline wavelets of a specific flavor, which are then combined to realize a family of complex wavelets that resemble the optimally-localized Gabor function for sufficiently large orders. Analytic wavelets, derived from the complexification of HT wavelet pairs, exhibit a one-sided spectrum. Based on the tensor-product of such analytic wavelets, and, in effect, by appropriately combining four separable biorthogonal wavelet bases of L^2(R^2), we then discuss a methodology for constructing 2D directional-selective complex...

Chaudhury, Kunal Narayan

2009-01-01T23:59:59.000Z

326

The Computation of Cloud-Base Height from Paired Whole-Sky Imaging Cameras  

Science Conference Proceedings (OSTI)

The authors have developed a novel approach to the extraction of cloud-base height (CBH) from pairs of whole-sky images. The core problem is to spatially register cloud fields from widely separated whole-sky imaging (WSI) cameras; this complete ...

Mark C. Allmen; W. Philip Kegelmeyer Jr.

1996-02-01T23:59:59.000Z

327

Fixing variable values in the capacitated facility location problem through pairing and surrogate constraint analysis  

Science Conference Proceedings (OSTI)

The Osorio and Glover (2003) use of dual surrogate analysis is exploited to fix variables in capacitated facility location problems (CFLP). The surrogate constraint is obtained by weighting the original problem constraints by their associated dual values ... Keywords: capacitated facility location problem, constraint pairing, duality, surrogate constraints

Maria A. Osorio; Abraham Snchez

2009-06-01T23:59:59.000Z

328

CP Asymmetry in the Higgs Decay into the Top Pair Due to the Stop Mixing  

SciTech Connect

We investigate a potentially large CP violating asymmetry in the decay of a neutral scalar or pseudoscalar Higgs boson into the top-anti-top pair. The source of the CP nonconservation is the complex mixing in the (left-right) stop sector. One of the interesting consequence is the different rates of the Higgs boson decays into CP conjugate polarized states.

Chang, Darwin

2001-07-25T23:59:59.000Z

329

Calix[4]pyrrole: A New Ion-Pair Receptor As Demonstrated by Liquid-Liquid Extraction  

SciTech Connect

Solvent extraction studies provide confirming evidence that meso-octamethylcalix[4]pyrrole acts as an ion-pair receptor for cesium chloride and cesium bromide in nitrobenzene solution. The stoichiometry of the interaction under extraction conditions from water to nitrobenzene was determined from plots of the cesium distribution ratios vs. cesium salt and receptor concentration, indicating the formation of an ion-paired 1:1:1 cesium:calix[4]pyrrole:halide complex. The extraction results were modeled to evaluate the equilibria inherent to the solvent extraction system, either with chloride or bromide. The binding energy between the halide anion and the calix[4]pyrrole was found to be about 7 kJ/mol larger for cesium chloride than for the cesium bromide. The ion-pairing free energies between the calix[4]pyrrole-halide complex and the cesium cation are nearly the same within experimental uncertainty for either halide, consistent with a structural model in which the Cs+ cation resides in the calix bowl. These results are unexpected since nitrobenzene is a very polar solvent that generally leads to dissociated complexes in the organic phase when used as a diluent in extraction studies of univalent ions. Control studies involving nitrate revealed no evidence of ion-pairing for CsNO3 under conditions identical to those where it is observed for CsCl and CsBr.

Wintergerst, Mr. Matthieu [Ecole Nationale Superieure de Chimie de Paris; Levitskaia, Tatiana G. [Pacific Northwest National Laboratory (PNNL); Moyer, Bruce A [ORNL; Sessler, Jonathan L. [University of Texas; Delmau, Laetitia Helene [ORNL

2008-01-01T23:59:59.000Z

330

Limits of heralded single photon sources based on parametric photon pair generation  

E-Print Network (OSTI)

We derive calculations on the statistics of a heralded single photon source based on parametric photon pair generation. These calculations highlight fundamental and practical limits for these sources, and show which physical parameters can be optimized to improve the quality of a real source.

Virally, Stphane; Godbout, Nicolas

2009-01-01T23:59:59.000Z

331

Limits of heralded single photon sources based on parametric photon pair generation  

E-Print Network (OSTI)

We derive calculations on the statistics of a heralded single photon source based on parametric photon pair generation. These calculations highlight fundamental and practical limits for these sources, and show which physical parameters can be optimized to improve the quality of a real source.

Stphane Virally; Suzanne Lacroix; Nicolas Godbout

2009-10-13T23:59:59.000Z

332

A simple model for the quenching of pairing correlations effects in rigidly deformed rotational bands  

E-Print Network (OSTI)

Using Chandrasekhar's S-type coupling between rotational and intrinsic vortical modes one may simply reproduce the HFB dynamical properties of rotating nuclei within Routhian HF calculations free of pairing correlations yet constrained on the relevant so-called Kelvin circulation operator. From the analogy between magnetic and rotating systems, one derives a model for the quenching of pairing correlations with rotation, introducing a critical angular velocity -- analogous to the critical field in supraconductors -- above which pairing vanishes. Taking stock of this usual model, it is then shown that the characteristic behavior of the vortical mode angular velocity as a function of the global rotation angular velocity can be modelised by a simple two parameter formula, both parameters being completely determined from properties of the band-head (zero-spin) HFB solution. From calculation in five nuclei, the validity of this modelised Routhian approach is assessed. It is clearly shown to be very good in cases where the evolution of rotational properties is only governed by the coupling between the global rotation and the pairing-induced intrinsic vortical currents. It therefore provides a sound ground base for evaluating the importance of coupling of rotation with other modes (shape distortions, quasiparticle degrees of freedom).

P. Quentin; H. Laftchiev; D. Samsoen; I. N. Mikhailov

2003-07-25T23:59:59.000Z

333

Nuclear Physics A 781 (2007) 317341 Symmetry energies, pairing energies, and mass  

E-Print Network (OSTI)

Nuclear Physics A 781 (2007) 317­341 Symmetry energies, pairing energies, and mass equations J of the respective mass equation since symmetry energies are related to the curvature of the nuclear mass surface.10.Dr; 21.10.Hw; 21.30.Fe; 21.60.-n Keywords: NUCLEAR STRUCTURE Z = 1­118; analyzed isobaric analog

O'Donnell, Tom

334

Analyses of humanchimpanzee orthologous gene pairs to explore evolutionary hypotheses of aging  

E-Print Network (OSTI)

Analyses of human­chimpanzee orthologous gene pairs to explore evolutionary hypotheses of aging Joa Abstract Compared to chimpanzees (Pan troglodytes), the onset of aging appears to be delayed in the human acting on genes associated with aging in different model systems, which allowed us to explore

Church, George M.

335

A Paired-Orientation Alignment Problem in a Hybrid Tracking System for Computer Assisted Surgery  

Science Conference Proceedings (OSTI)

Coordinate Alignment (CA) is an important problem in hybrid tracking systems involving two or more tracking devices. CA typically associates the measurements from two or more tracking systems with respect to distinct base frames and makes them comparable ... Keywords: Computer assisted surgery (CAS), Coordinate alignment, Paired-Orientation Alignment (POA), Quaternions, Surgical navigation

Hongliang Ren; Peter Kazanzides

2011-08-01T23:59:59.000Z

336

Towards laboratory-produced relativistic electron-positron pair-plasmas  

Science Conference Proceedings (OSTI)

Relativistic pair-plasmas and jets are believed to exist in many astrophysical objects and are often invoked to explain energetic phenomena related to Gamma Ray Bursts and Black Holes. On earth, positrons from radioactive isotopes or accelerators are used extensively at low energies (sub-MeV) in areas related to surface science positron emission tomography and basic antimatter science. Experimental platforms capable of producing the high-temperature pair-plasma and high-flux jets required to simulate astrophysical positron conditions have so far been absent. In the last few years, we performed extensive experiments generating positrons with intense lasers where we found that relativistic electron and positron jets are produced by irradiating a solid gold target with an intense picosecond laser pulse. The positron temperatures in directions parallel and transverse to the beam both exceeded 0.5 MeV, and the density of electrons and positrons in these jets are of order 10{sup 16} cm{sup -3} and 10{sup 13} cm{sup -3}, respectively. With the advent of high-energy ultra-short laser pulses, we expect that a charge-neutral, relativistic pair-plasma is achievable, a novel regime of laboratory-produced hot dense matter. This talk will present some details of the laser-produced pair-plasma experiments.

Chen, H; Wilks, S C; Meyerhofer, D D; Beiersdorfer, P; Cauble, R; Dollar, F; Falk, K; Hazi, A; Murphy, C D; Park, J; Seely, J; Szabo, C I; Shepherd, R; Tommasini, R; Zulick, K

2010-08-31T23:59:59.000Z

337

Mller: Modeling the Impact of a Learning Phase on the Business Value of a Pair Programming Project. APSEC 11  

E-Print Network (OSTI)

Abstract. Pair programmers need a warmup phase before the pair can work at full speed. The length of the learning interval varies, depending on how experienced the developers are with pair programming and how familiar they are with each other. We study how large the impact of the lower pair productivity during warmup is on the business value of the pair programming project. To this end, we extend our net present value model for pair programming to explicitly include a learning interval for pairs. We then carry out a simulation study where we vary the shape of the learning curve, the length of the learning interval, the final productivity level of the pairs, the market pressure, and the size of the workforce. Our simulations show that the cost of the warmup phase is reasonably small compared to the project value, but nonetheless must be taken into account when estimating the project. Our results also suggest that the learning overhead is not an obstacle to introducing and using pair programming in a real environment.

Frank Padberg

2004-01-01T23:59:59.000Z

338

Influence of pairing on the distribution of independent yield strengths in neutron-induced fission  

SciTech Connect

This report is a summary of the current status of an ongoing investigation of the influence of the pairing force in the distribution of independent yields. At this time pairing systematics have been obtained for /sup 235/U thermal and fast fission yields by a comparison of experimental data to the normal yield curves predicted by the phenomenological model. A semiempirical formalism has been developed and tested (insofar as the available data permits) by which estimates for the magnitudes of the pairing effects can be easily incorporated into the version of the phenomenological model to be used in the ENDF/B-V Fission Product Evaluated Data File. The formalism is based upon the /sup 235/U thermal and fast fission data analysis and has been extended to other proposed ENDF/B-V fissionable nuclides. Neutron energy dependence has been incorporated (in a simple fashion) in terms of excitation energies of the compound system and measured fission barriers. Again, the energy dependence has been expressed in a manner which is easily assimilated by the ENDF/B-V yield model. The initial efforts in this study have been governed by the need to include some quantitative description of the pairing effects within the framework of the existing phenomenological treatment. The results reported herein are thus empirically based and it is to be expected that they will change with the accumulation of more (and better) data. Hopefully this work will provide important clues to a more detailed calculation of the pairing influence as well as other theoretical work in progress.

Madland, D.G.; England, T.R.

1976-07-01T23:59:59.000Z

339

Fosmid Cre-LoxP Inverse PCR Paired-End (Fosmid CLIP-PE), a Novel Method for Constructing Fosmid Pair-End Library (Seventh Annual Sequencing, Finishing, Analysis in the Future (SFAF) Meeting 2012)  

SciTech Connect

Ze Peng from DOE JGI presents "Fosmid Cre-LoxP Inverse PCR Paired-End (Fosmid CLIP-PE), a Novel Method for Constructing Fosmid Pair-End Library" at the 7th Annual Sequencing, Finishing, Analysis in the Future (SFAF) Meeting held in June, 2012 in Santa Fe, NM.

Peng, Ze [DOE JGI

2012-06-01T23:59:59.000Z

340

Double-plateau in the energy distribution of electrons scattered by ions-pairs in a strong laser field  

E-Print Network (OSTI)

Double-plateau in the energy distribution of electrons scattered by ions-pairs in a strong laser) The energy distribution of electrons scattered from single ions and from pairs of ions in a strong laser solution of the energy distribution for instantaneous Coulomb collisions in three dimensions

Kull, Hans-Jörg

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

A Proposal of Pulse-Pair Doppler Operation on a Spaceborne Cloud-Profiling Radar in the W Band  

Science Conference Proceedings (OSTI)

Pulse-pair Doppler operation is considered for the spaceborne mission. In a formalism, the condition that a measured Doppler velocity on pulse-pair operation corresponds to that on the FFT operation is derived. The coherent coupling effect of the ...

Satoru Kobayashi; Hiroshi Kumagai; Hiroshi Kuroiwa

2002-09-01T23:59:59.000Z

342

An efficient remote user authentication and key agreement protocol for mobile client-server environment from pairings  

Science Conference Proceedings (OSTI)

With the continue evaluation of mobile devices in terms of the capabilities and services, security concerns increase dramatically. To provide secured communication in mobile client-server environment, many user authentication protocols from pairings ... Keywords: Bilinear pairing, ID-based, Key agreement, Mobile device, Mutual authentication, Provable security

Debiao He

2012-08-01T23:59:59.000Z

343

Polarization Effects In The Charged Lepton Pair Production By A Neutrino (Antineutrino) In A Magnetic Field  

Science Conference Proceedings (OSTI)

The probability of the process of the charged lepton pair production by a neutrino (an antineutrino) with allowance for the longitudinal and transverse polarizations of the charged leptons in a magnetic field is presented. The dependence of the probability of the process on the spin variables of the charged leptons and on the azimuthal and polar angles of the initial and final neutrinos (antineutrinos) are investigated. It is shown that the probability of the process is sensitive to the spin variables of the charged leptons and to the direction of the neutrino (antineutrino) momentum. It is determined that the neutrino (antineutrino) energy and momentum loss through the production of a charged lepton pair happens asymmetrically.

Huseynov, Vali A. [Department of General and Theoretical Physics, Nakhchivan State University, AZ 7000, Nakhchivan (Azerbaijan); Laboratory of Physical Research, Nakhchivan Division of Azerbaijan National Academy of Sciences, AZ 7000, Nakhchivan (Azerbaijan); Ahmad, Ali S. [Department of General and Theoretical Physics, Nakhchivan State University, AZ 7000, Nakhchivan (Azerbaijan)

2007-06-13T23:59:59.000Z

344

Effects of crystal length on the angular spectrum of spontaneous parametric downconversion photon pairs  

E-Print Network (OSTI)

We present a theoretical and experimental analysis of the joint effects of the transverse electric field distribution and of the nonlinear crystal characteristics on the properties of photon pairs generated by spontaneous parametric downconversion (SPDC). While it is known that for a sufficiently short crystal the pump electric field distribution fully determines the joint signal-idler properties, for longer crystals the nonlinear crystal properties also play an important role. In this paper we present experimental measurements of the angular spectrum (AS) and of the conditional angular spectrum (CAS) of photon pairs produced by spontaneous parametric downconversion (SPDC), carried out through spatially-resolved photon counting. In our experiment we control whether or not the source operates in the short-crystal regime through the degree of pump focusing, and explicitly show how the AS and CAS measurements differ in these two regimes. Our theory provides an understanding of the boundary between these two regimes and also predicts the corresponding differing behaviors.

Roberto Ramirez-Alarcon; Hector Cruz-Ramirez; Alfred B. U'Ren

2013-06-20T23:59:59.000Z

345

A photoinduced persistent structural transformation of the special pair of a bacterial reaction center  

SciTech Connect

Structural modification of photosynthetic reaction centers is an important approach for understanding their charge-separation processes. An unprecedented persistent structural transformation of the special pair (dimer) of bacterioclorophyll molecules can be produced by light absorption alone. The nonphotochemical hole-burned spectra for the reaction center of Rhodopeseudomonas viridis show that the phototransformation leads to a red shift of 150 wave numbers for the special pair's lowest energy absorption band, P960, and a comparable blue shift for a state at 850 nanometers, which can now be definitively assigned as being most closely associated with the upper dimer component. Additional insights on excited-state electronic structure include the identification of a new state.

Reddy, N.R.S.; Kolaczkowski, S.V.; Small, G.J. (Iowa State Univ., Ames (United States))

1993-04-02T23:59:59.000Z

346

Rotating-filaments-pairs in a hexagonal superlattice state in dielectric barrier discharge  

SciTech Connect

Rotating-filaments-pairs in a hexagonal superlattice state (HSS) are studied in a dielectric barrier discharge system. The evolution and phase diagrams of HSS are given. The wavelength of HSS and the mean diameter of the two rotating filaments all decrease with the increase of applied voltage. The instantaneous orientations of rotating-filaments-pairs are equal probability approximately. There is a larger peak and a smaller one in both the probability density functions of the rotation speed ({omega}) of rotating filaments and that of the distance (D) between two rotating filaments. According to the fitting curves of ln{omega}{sup 2} vs. lnD, {omega}{sup 2} is inversely proportional to D{sup 7}. The rotation of filaments is discussed theoretically by the force among surface charges.

Dong Lifang; Yang Yujie; Li Ben; Fan Weili; Song Qian [College of Physics Science and Technology, Hebei University, Baoding 071002 (China) and Hebei Key Laboratory of Optic-electronic Information Materials, Baoding 071002 (China)

2011-12-15T23:59:59.000Z

347

Bound-Free Electron-Positron Pair Production in Relativistic Heavy-Ion Collisions  

E-Print Network (OSTI)

The bound-free electron-positron pair production is considered for relativistic heavy ion collisions. In particular, cross sections are calculated for the pair production with the simultaneous capture of the electron into the 1s ground state of one of the ions and for energies that are relevant for the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Colliders (LHC). In the framework of perturbation theory, we applied Monte-Carlo integration techniques to compute the lowest-order Feynman diagrams amplitudes by using Darwin wave functions for the bound states of the elec- trons and Sommerfeld-Maue wave functions for the continuum states of the positrons. Calculations were performed especially for the collision of Au + Au at 100 GeV/nucleon and Pb + Pb at 3400 GeV/nucleon.

M. Y. Sengul; M. C. Guclu; S. Fritzsche

2009-07-30T23:59:59.000Z

348

NNLL threshold resummation for top-pair and single-top production  

E-Print Network (OSTI)

I discuss threshold resummation at NNLL accuracy in the standard moment-space approach in perturbative QCD for top-pair and single-top production. For top quark pair production I present new approximate NNLO results for the total cross section and for the top quark transverse momentum and rapidity distributions at 8 TeV LHC energy. I discuss the accuracy of the soft-gluon approximation and show that the NLO and NNLO approximate results from resummation are practically indistinguishable from exact NLO and partial NNLO results. For single top production I present new approximate NNLO results for the total cross sections in all three channels at the LHC and also for the top quark transverse momentum distributions in t-channel production and in top-quark associated production with a W boson. For both ttbar and single-top production the agreement of theoretical results with LHC and Tevatron data is excellent.

Nikolaos Kidonakis

2012-10-29T23:59:59.000Z

349

Search for Higgs decays to tau lepton pairs at the Tevatron  

E-Print Network (OSTI)

We present a search for neutral supersymmetric Higgs bosons decaying to tau+tau- pairs produced in ppbar collisions at sqrt{s}=1.96 TeV. The data have been collected with the CDF II and D0 detectors at the Tevatron collider at Fermilab (1 fb^-1 of integrated luminosity per experiment). No significant excess above the standard model backgrounds is observed. We set exclusion limits on the Higgs production cross-section times the branching fraction of its decay to tau+tau- pairs for Higgs masses in the range from 90 to 250 GeV/c^2. We also set exclusion limits on MSSM parameters m_A and tan_beta in several benchmark scenarios.

I. Kravchenko; for the CDF; D0 Collaborations

2007-10-26T23:59:59.000Z

350

Search for the standard model Higgs boson in tau lepton pair final states  

Science Conference Proceedings (OSTI)

We present a search for the standard model Higgs boson in final states with an electron or muon and a hadronically decaying tau lepton in association with zero, one, or two or more jets using data corresponding to an integrated luminosity of up to 7.3 fb{sup -1} collected with the D0 detector at the Fermilab Tevatron collider. The analysis is sensitive to Higgs boson production via gluon gluon fusion, associated vector boson production, and vector boson fusion, and to Higgs boson decays to tau lepton pairs or W boson pairs. Observed (expected) limits are set on the ratio of 95% C.L. upper limits on the cross section times branching ratio, relative to those predicted by the Standard Model, of 14 (22) at a Higgs boson mass of 115 GeV and 7.7 (6.8) at 165 GeV.

Abazov, V.M.

2012-03-01T23:59:59.000Z

351

Pion-pair formation and the pion dispersion relation in a hot pion gas  

E-Print Network (OSTI)

The possibility of pion--pair formation in a hot pion gas, based on the bosonic gap equation, is pointed out and discussed in detail. The critical temperature for condensation of pion pairs (Evans--Rashid transition) is determined as a function of the pion density. As for fermions, this phase transition is signaled by the appearance of a pole in the two--particle propagator. In bose systems there exists a second, lower critical temperature, associated with the appearance of the single--particle condensate. Between the two critical temperatures the pion dispersion relation changes from the usual quasiparticle dispersion to a Bogoliubov--like dispersion relation at low momenta. This generalizes the non-relativistic result for an attractive bose gas by Evans et al. Possible consequences for the inclusive pion spectra measured in heavy--ion collisions at ultra--relativistic energies are discussed.

T. Alm; G. Chanfray; P. Schuck; G. Welke

1996-09-13T23:59:59.000Z

352

Effects of crystal length on the angular spectrum of spontaneous parametric downconversion photon pairs  

E-Print Network (OSTI)

We present a theoretical and experimental analysis of the joint effects of the transverse electric field distribution and of the nonlinear crystal characteristics on the properties of photon pairs generated by spontaneous parametric downconversion (SPDC). While it is known that for a sufficiently short crystal the pump electric field distribution fully determines the joint signal-idler properties, for longer crystals the nonlinear crystal properties also play an important role. In this paper we present experimental measurements of the angular spectrum (AS) and of the conditional angular spectrum (CAS) of photon pairs produced by spontaneous parametric downconversion (SPDC), carried out through spatially-resolved photon counting. In our experiment we control whether or not the source operates in the short-crystal regime through the degree of pump focusing, and explicitly show how the AS and CAS measurements differ in these two regimes. Our theory provides an understanding of the boundary between these two regi...

Ramirez-Alarcon, Roberto; U'Ren, Alfred B

2013-01-01T23:59:59.000Z

353

Implosion and explosion of electrostatic cylindrical and spherical shocks in asymmetric pair-ion plasmas  

SciTech Connect

Nonlinear electrostatic shock waves are studied in unmagnetized, dissipative pair-ion plasmas. The dissipation in the system is taken into account by considering the effect of kinematic viscosity of both positive and negative ions in plasmas. The system of fluid equations for asymmetric pair-ion plasma is reduced to Korteweg-deVries-Burgers equation in the limit of small amplitude perturbation. It is observed that the system under consideration admits rarefactive shocks. Keeping in view the practical applications, the nonlinear propagation of both the exploding and imploding shocks is investigated and the differences are expounded in detail. The present study may have relevance in the study of the formation of electrostatic shocks in laser-induced implosion devices, star formation, supernovae explosion, etc.

Masood, W. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad 54000 (Pakistan); National Centre for Physics (NCP), Shahdara Valley Road, Islamabad 44000 (Pakistan); Rizvi, H. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad 54000 (Pakistan)

2011-04-15T23:59:59.000Z

354

Linear and nonlinear coupled drift and ion acoustic waves in collisional pair ion-electron magnetoplasma  

SciTech Connect

Linear and nonlinear coupled electrostatic drift and ion acoustic waves are studied in inhomogeneous, collisional pair ion-electron plasma. The Korteweg-de Vries-Burgers (KdVB) equation for a medium where both dispersion and dissipation are present is derived. An attempt is made to obtain exact solution of KdVB equation by using modified tanh-coth method for arbitrary velocity of nonlinear drift wave. Another exact solution for KdVB is obtained, which gives a structure of shock wave. Korteweg-de Vries (KdV) and Burgers equations are derived in limiting cases with solitary and monotonic shock solutions, respectively. Effects of species density, magnetic field, obliqueness, and the acoustic to drift velocity ratio on the solitary and shock solutions are investigated. The results discussed are useful in understanding of low frequency electrostatic waves at laboratory pair ion plasmas.

Mushtaq, A. [Theoretical Plasma Physics Division, Pakistan Institute of Nuclear Science and Technology (PINSTECH), Nilore, Islamabad 45660 (Pakistan); School of Physics, University of Sydney, New South Wales 2006 (Australia); Saeed, R.; Haque, Q. [Theoretical Plasma Physics Division, Pakistan Institute of Nuclear Science and Technology (PINSTECH), Nilore, Islamabad 45660 (Pakistan)

2011-04-15T23:59:59.000Z

355

Spatial correlation of photon pairs produced in spontaneous parametric down-conversion  

SciTech Connect

We report the observation of spatial biphoton correlation in spontaneous parametric down conversion. The optical bench includes a type-I BBO crystal of effective length 2 mm, pumped by a 100 mW violet laser diode centered at 405.38 nm. Photon pairs are created with degenerate wavelength {approx_equal}810.76 nm. Once the horizontal counting rates have been measured, a simple geometrical recipe is shown to be useful in calculating bounds for the width of vertical counting rates. The spatial correlation between idler and signal photons is illustrated with a coincidence distribution of the coordinate pair (x{sub s},x{sub i}), with x{sub i,s} the idler (signal) detector position in horizontal scan.

Procopio, L. M. [Departamento de Fisica, Cinvestav, A.P. 14-740, Mexico D.F. 07000 (Mexico); Rosas-Ortiz, O. [Departamento de Fisica, Cinvestav, A.P. 14-740, Mexico D.F. 07000 (Mexico); Instituto de Fisica, Universidad Nacional Autonoma de Mexico, A.P. 20-364, Mexico D.F. 01000 (Mexico); Velazquez, V. [Facultad de Ciencias, Universidad Nacional Autonoma de Mexico, A.P. 20-364, Mexico D.F. 04510 (Mexico)

2010-10-11T23:59:59.000Z

356

Next-to-leading order QCD corrections to slepton pair production via vector-boson fusion  

E-Print Network (OSTI)

Slepton pairs can be produced in vector-boson fusion processes at hadron colliders. The next-to-leading order QCD corrections to the electroweak production cross section for p p -> slepton+ slepton- +2jets at order alpha_s alpha^4 have been calculated and implemented in a NLO parton-level Monte Carlo program. Numerical results are presented for the CERN Large Hadron Collider.

Partha Konar; Dieter Zeppenfeld

2006-12-11T23:59:59.000Z

357

An extended dust disk in a spiral galaxy; An occulting galaxy pair in ANGST  

E-Print Network (OSTI)

We present an analysis of an occulting galaxy pair, serendipitously discovered in ACS Nearby Galaxy Survey Treasury (ANGST) observations of NGC 253 taken with Hubble Space Telescope's Advanced Camera for Survey in F475W, F606W$ and F814W (SDSS-g, broad V and I). The foreground disk system (at z < 0.06) shows a dusty disk much more extended than the starlight, with spiral lanes seen in extinction out to 1.5 R\\_25, approximately six half-light radii. This pair is the first where extinction can be mapped reliably out to this distance from the center. The spiral arms of the extended dust disk show typical extinction values of A\\_F475W ~ 0.25, A\\_F606W ~ 0.25, and A\\_F814W ~ 0.15. The extinction law inferred from these measures is similar to the local Milky Way one, and we show that the smoothing effects of sampling at limited spatial resolution (<57 pc, in these data) flattens the observed function through mixing of regions with different extinction. This galaxy illustrates the diversity of dust distributions in spirals, and the limitations of adopting a single dust model for optically similar galaxies. The ideal geometry of this pair of overlapping galaxies and the high sampling of HST data make this dataset ideal to analyze this pair with three separate approaches to overlapping galaxies: (A) a combined fit, rotating copies of both galaxies, (B) a simple flip of the background image and (C) an estimate of the original fluxes for the individual galaxies based on reconstructions of their proper isophotes. We conclude that in the case of high quality data such as these, isophotal models are to be preferred.

B. W. Holwerda; W. C. Keel; B. Williams; J. J. Dalcanton; R. S. de Jong

2008-10-15T23:59:59.000Z

358

Direct generation of photon triplets using cascaded photon-pair sources  

E-Print Network (OSTI)

Non-classical states of light, such as entangled photon pairs and number states, are essential for fundamental tests of quantum mechanics and optical quantum technologies. The most widespread technique for creating these quantum resources is the spontaneous parametric down-conversion (SPDC) of laser light into photon pairs. Conservation of energy and momentum in this process, known as phase-matching, gives rise to strong correlations which are used to produce two-photon entanglement in various degrees of freedom. It has been a longstanding goal of the quantum optics community to realise a source that can produce analogous correlations in photon triplets, but of the many approaches considered, none have been technically feasible. In this paper we report the observation of photon triplets generated by cascaded down-conversion. Here each triplet originates from a single pump photon, and therefore quantum correlations will extend over all three photons in a way not achievable with independently created photon pairs. We expect our photon-triplet source to open up new avenues of quantum optics and become an important tool in quantum technologies. Our source will allow experimental interrogation of novel quantum correlations, the post-selection free generation of tripartite entanglement without post- selection and the generation of heralded entangled-photon pairs suitable for linear optical quantum computing. Two of the triplet photons have a wavelength matched for optimal transmission in optical fibres, ideally suited for three-party quantum communication. Furthermore, our results open interesting regimes of non-linear optics, as we observe spontaneous down-conversion pumped by single photons, an interaction also highly relevant to optical quantum computing.

H. Hbel; D. R. Hamel; A. Fedrizzi; S. Ramelow; K. J. Resch; T. Jennewein

2010-07-28T23:59:59.000Z

359

NON-FREE POINTS FOR GROUPS GENERATED BY A PAIR OF 2 2 MATRICES.  

E-Print Network (OSTI)

NON-FREE POINTS FOR GROUPS GENERATED BY A PAIR OF 2 ? 2 MATRICES. JOHN BAMBERG Abstract. A point in the complex plane is said to be free if the group generated by the matrices ( 1 2 0 1 ) and ( 1 0 1 ) is free. In this paper we give an infinite family of polynomials whose roots are the non-free points. The main idea

Bamberg, John

360

Hole burning in a nanomechanical resonator coupled to a Cooper pair box  

E-Print Network (OSTI)

We propose a scheme to create holes in the statistical distribution of excitations of a nanomechanical resonator. It employs a controllable coupling between this system and a Cooper pair box. The success probability and the fidelity are calculated and compared with those obtained in the atom-field system via distinct schemes. As an application we show how to use the hole-burning scheme to prepare (low excited) Fock states.

C. Valverde; A. T. Avelar; B. Baseia

2011-04-18T23:59:59.000Z

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Search for pair production of the scalar top quark in the electron-muon final state  

E-Print Network (OSTI)

We report the result of a search for the pair production of the lightest supersymmetric partner of the top quark ($\\tilde{t}_1$) in $p\\bar{p}$ collisions at a center-of-mass energy of 1.96 TeV at the Fermilab Tevatron collider corresponding to an integrated luminosity of 5.4 fb$^{-1}$. The scalar top quarks are assumed to decay into a $b$ quark, a charged lepton, and a scalar neutrino ($\\tilde{\

V. M. Abazov; B. Abbott; M. Abolins; B. S. Acharya; M. Adams; T. Adams; G. D. Alexeev; G. Alkhazov; A. Altona; G. Alverson; G. A. Alves; L. S. Ancu; M. Aoki; Y. Arnoud; M. Arov; A. Askew; B. sman; O. Atramentov; C. Avila; J. BackusMayes; F. Badaud; L. Bagby; B. Baldin; D. V. Bandurin; S. Banerjee; E. Barberis; P. Baringer; J. Barreto; J. F. Bartlett; U. Bassler; V. Bazterra; S. Beale; A. Bean; M. Begalli; M. Begel; C. Belanger-Champagne; L. Bellantoni; S. B. Beri; G. Bernardi; R. Bernhard; I. Bertram; M. Besanon; R. Beuselinck; V. A. Bezzubov; P. C. Bhat; V. Bhatnagar; G. Blazey; S. Blessing; K. Bloom; A. Boehnlein; D. Boline; T. A. Bolton; E. E. Boos; G. Borissov; T. Bose; A. Brandt; O. Brandt; R. Brock; G. Brooijmans; A. Bross; D. Brown; J. Brown; X. B. Bu; D. Buchholz; M. Buehler; V. Buescher; V. Bunichev; S. Burdinb; T. H. Burnett; C. P. Buszello; B. Calpas; E. Camacho-Prez; M. A. Carrasco-Lizarraga; B. C. K. Casey; H. Castilla-Valdez; S. Chakrabarti; D. Chakraborty; K. M. Chan; A. Chandra; G. Chen; S. Chevalier-Thry; D. K. Cho; S. W. Cho; S. Choi; B. Choudhary; T. Christoudias; S. Cihangir; D. Claes; J. Clutter; M. Cooke; W. E. Cooper; M. Corcoran; F. Couderc; M. -C. Cousinou; A. Croc; D. Cutts; M. ?wiok; A. Das; G. Davies; K. De; S. J. de Jong; E. De La Cruz-Burelo; F. Dliot; M. Demarteau; 47 R. Demina; D. Denisov; S. P. Denisov; S. Desai; K. DeVaughan; H. T. Diehl; M. Diesburg; A. Dominguez; T. Dorland; A. Dubey; L. V. Dudko; D. Duggan; A. Duperrin; S. Dutt; A. Dyshkant; M. Eads; D. Edmunds; J. Ellison; V. D. Elvira; Y. Enari; S. Eno; H. Evans; A. Evdokimov; V. N. Evdokimov; G. Facini; T. Ferbel; F. Fiedler; F. Filthaut; W. Fisher; H. E. Fisk; M. Fortner; H. Fox; S. Fuess; T. Gadfort; A. Garcia-Bellido; V. Gavrilov; P. Gay; W. Geist; W. Geng; D. Gerbaudo; C. E. Gerber; Y. Gershtein; G. Ginther; G. Golovanov; A. Goussiou; P. D. Grannis; S. Greder; H. Greenlee; Z. D. Greenwood; E. M. Gregores; G. Grenier; Ph. Gris; J. -F. Grivaz; A. Grohsjean; S. Grnendahl; M. W. Grnewald; F. Guo; J. Guo; G. Gutierrez; P. Gutierrez; A. Haasc; S. Hagopian; J. Haley; L. Han; K. Harder; A. Harel; J. M. Hauptman; J. Hays; T. Head; T. Hebbeker; D. Hedin; H. Hegab; A. P. Heinson; U. Heintz; C. Hensel; I. Heredia-De La Cruz; K. Herner; G. Hesketh; M. D. Hildreth; R. Hirosky; T. Hoang; J. D. Hobbs; B. Hoeneisen; M. Hohlfeld; S. Hossain; Z. Hubacek; N. Huske; V. Hynek; I. Iashvili; R. Illingworth; A. S. Ito; S. Jabeen; M. Jaffr; S. Jain; D. Jamin; R. Jesik; K. Johns; M. Johnson; D. Johnston; A. Jonckheere; P. Jonsson; J. Joshi; A. Justed; K. Kaadze; E. Kajfasz; D. Karmanov; P. A. Kasper; I. Katsanos; R. Kehoe; S. Kermiche; N. Khalatyan; A. Khanov; A. Kharchilava; Y. N. Kharzheev; D. Khatidze; M. H. Kirby; J. M. Kohli; A. V. Kozelov; J. Kraus; A. Kumar; A. Kupco; T. Kur?a; V. A. Kuzmin; J. Kvita; S. Lammers; G. Landsberg; P. Lebrun; H. S. Lee; S. W. Lee; W. M. Lee; J. Lellouch; L. Li; Q. Z. Li; S. M. Lietti; J. K. Lim; D. Lincoln; J. Linnemann; V. V. Lipaev; R. Lipton; Y. Liu; Z. Liu; A. Lobodenko; M. Lokajicek; P. Love; H. J. Lubatti; R. Luna-Garciae; A. L. Lyon; A. K. A. Maciel; D. Mackin; R. Madar; R. Magaa-Villalba; S. Malik; V. L. Malyshev; Y. Maravin; J. Martnez-Ortega; R. McCarthy; C. L. McGivern; M. M. Meijer; A. Melnitchouk; D. Menezes; P. G. Mercadante; M. Merkin; A. Meyer; J. Meyer; N. K. Mondal; G. S. Muanza; M. Mulhearn; E. Nagy; M. Naimuddin; M. Narain; R. Nayyar; H. A. Neal; J. P. Negret; P. Neustroev; S. F. Novaes; T. Nunnemann; G. Obrant; J. Orduna; N. Osman; J. Osta; G. J. Otero y Garzn; M. Owen; M. Padilla; M. Pangilinan; N. Parashar; V. Parihar; S. K. Park; J. Parsons; R. Partridgec; N. Parua; A. Patwa; B. Penning; M. Perfilov; K. Peters; Y. Peters; G. Petrillo; P. Ptroff; R. Piegaia; J. Piper; M. -A. Pleier; P. L. M. Podesta-Lermaf; V. M. Podstavkov; M. -E. Pol; P. Polozov; A. V. Popov; M. Prewitt; D. Price; S. Protopopescu; J. Qian; A. Quadt; B. Quinn; M. S. Rangel; K. Ranjan; P. N. Ratoff; I. Razumov; P. Renkel; P. Rich; M. Rijssenbeek; I. Ripp-Baudot; F. Rizatdinova; M. Rominsky; C. Royon; P. Rubinov; R. Ruchti; G. Safronov; G. Sajot; A. Snchez-Hernndez; M. P. Sanders; B. Sanghi; A. S. Santos; G. Savage; L. Sawyer; T. Scanlon; R. D. Schamberger; Y. Scheglov; H. Schellman; T. Schliephake; S. Schlobohm; C. Schwanenberger; R. Schwienhorst; J. Sekaric; H. Severini; E. Shabalina; V. Shary; A. A. Shchukin; R. K. Shivpuri; V. Simak; V. Sirotenko; P. Skubic; P. Slattery; D. Smirnov; K. J. Smith; G. R. Snow; J. Snow; S. Snyder; S. Sldner-Rembold; L. Sonnenschein; A. Sopczak; M. Sosebee; K. Soustruznik; B. Spurlock; J. Stark; V. Stolin; D. A. Stoyanova; E. Strauss; M. Strauss; D. Strom; L. Stutte; P. Svoisky; M. Takahashi; A. Tanasijczuk; W. Taylor; M. Titov; V. V. Tokmenin; D. Tsybychev; B. Tuchming; C. Tully; P. M. Tuts; L. Uvarov

2010-09-29T23:59:59.000Z

362

Jordan Pairs, E6 and U-Duality in Five Dimensions  

E-Print Network (OSTI)

By exploiting the Jordan pair structure of U-duality Lie algebras in D = 3 and the relation to the super-Ehlers symmetry in D = 5, we elucidate the massless multiplet structure of the spectrum of a broad class of D = 5 supergravity theories. Both simple and semi-simple, Euclidean rank-3 Jordan algebras are considered. Theories sharing the same bosonic sector but with different supersymmetrizations are also analyzed.

Sergio Ferrara; Alessio Marrani; Bruno Zumino

2012-08-01T23:59:59.000Z

363

A new measure of phase synchronization for a pair of time series and seizure focus localization  

E-Print Network (OSTI)

Defining and measuring phase synchronization in a pair of nonlinear time series are highly nontrivial. This can be done with the help of Fourier transform, when it exists, for a pair of stored (hence stationary) signals. In a time series instantaneous phase is often defined with the help of Hilbert transform. In this paper phase of a time series has been defined with the help of Fourier transform. This gives rise to a deterministic method to detect phase synchronization in its most general form between a pair of time series. Since this is a stricter method than the statistical methods based on instantaneous phase, this can be used for lateralization and source localization of epileptic seizures with greater accuracy. Based on this method a novel measure of phase synchronization, called syn function, has been defined, which is capable of quantifying neural phase synchronization and asynchronization as important parameters of epileptic seizure dynamics. It has been shown that such a strict measure of phase synchronization has potential application in seizure focus localization from scalp electroencephalogram (EEG) data, without any knowledge of electrical conductivity of the head.

Kaushik Majumdar

2006-12-13T23:59:59.000Z

364

Role of Solvents on the Thermodynamics and Kinetics of Forming Frustrated Lewis Pairs  

Science Conference Proceedings (OSTI)

To enhance our understanding of the role of solvent on the thermodynamics and kinetics of forming Frustrated Lewis pairs (FLP), we carried out a systematic simulation study on these systems in dichloromethane and toluene solvents. These molecular systems are of particular interest due to their relevance in the catalytic hydrogenation and hydrogen storage processes. While the computed structural observables for both molecules are very similar, the slow molecular reorientation was consistent with the size of the species. The computed free energy profiles for the FLP in both solvents show similar gross characteristics but differ in details. We observe two well-defined contact and a solvent-separated regions with different well depths and barrier heights to dissociation. The kinetics of solute-pair interconversion was studied using transition state theory, comparing Kramers and Grote Hynes treatment of the dynamic response of the solvent. These rate results were used to predict solvent effects on dynamical features of contact solute-pair association. This work was supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences. Pacific Northwest National Laboratory (PNNL) is a multiprogram national laboratory operated for DOE by Battelle. The calculations were carried out using computer resources provided by BES. Method development benefits M86304. The scientific understanding of the systems studied benefits F63768

Dang, Liem X.; Schenter, Gregory K.; Chang, Tsun-Mei; Kathmann, Shawn M.; Autrey, Thomas

2012-11-15T23:59:59.000Z

365

Spiral Disk Opacity from Occulting Galaxy Pairs in the Sloan Digital Sky Survey  

E-Print Network (OSTI)

A spiral galaxy partially ovelapping a more distant elliptical offers an unique opportunity to measure the dust extinction in the foreground spiral. From the Sloan Digital Sky Survey DR4 spectroscopic sample, we selected 83 occulting galaxy pairs and measured disk opacity over the redshift range z = 0.0-0.2 with the goal to determine the recent evolution of disk dust opacity. The enrichment of the ISM changes over the lifetime of a disk and it is reasonable to expect the dust extinction properties of spiral disks as a whole to change over their lifetime. When they do, the change will affect our measurements of galaxies over the observable universe. From the SDSS pairs we conclude that spiral disks show evidence of extinction to ~2 effective radii. However, no evidence for recent evolution of disk opacity is evident, due to the limited redshift range and our inability to distinguish other factors on disk opacity such as the presence of spiral arms and Hubble type. Such effects also mask any relation between surface brightness and optical depth that has been found in nearby galaxies. Hence, we conclude that the SDSS spectral catalog is an excellent way to find occulting pairs and construct a uniform local sample. However, higher resolution than the SDSS images is needed to disentangle the effects of spiral arms and Hubble type from evolution since z = 0.2.

B. W. Holwerda; W. C. Keel; A. Bolton

2007-08-08T23:59:59.000Z

366

Pair Production of Heavy Quarkonium and $B_c(^*)$ Mesons at Hadron Colliders  

E-Print Network (OSTI)

We investigate the pair production of S-wave heavy quarkonium at the LHC in the color-singlet mechanism (CSM) and estimate the contribution from the gluon fragmentation process in the color-octet mechanism (COM) for comparison. With the matrix elements extracted previously in the leading order calculations, the numerical results show that the production rates are quite large for the pair production processes at the LHC. The $p_t$ distribution of double $J/\\psi$ production in the CSM is dominant over that in the COM when $p_t$ is smaller than about 8GeV. For the production of double $\\Upsilon$, the contribution of the COM is always larger than that in the CSM. The large differences in the theoretical predictions between the CSM and COM for the $p_t$ distributions in the large $p_t$ region are useful in clarifying the effects of COM on the quarkonium production. We also investigate the pair production of S-wave $B_c$ and $B_c^*$ mesons, and the measurement of these processes is useful to test the CSM and extract the LDMEs for the $B_c$ and $B_c^*$ mesons.

Rong Li; Yu-Jie Zhang; Kuang-Ta Chao

2009-03-12T23:59:59.000Z

367

Nanoscale strain-induced pair suppression as a vortex-pinning mechanism in high- temperature superconductors  

SciTech Connect

Boosting large-scale superconductor applications require nanostructured conductors with artificial pinning centres immobilizing quantized vortices at high temperature and magnetic fields. Here we demonstrate a highly effective mechanism of artificial pinning centers in solution-derived high-temperature superconductor nanocomposites through generation of nanostrained regions where Cooper pair formation is suppressed. The nanostrained regions identified from transmission electron microscopy devise a very high concentration of partial dislocations associated with intergrowths generated between the randomly oriented nanodots and the epitaxial YBa{sub 2}Cu{sub 3}O{sub 7} matrix. Consequently, an outstanding vortex-pinning enhancement correlated to the nanostrain is demonstrated for four types of randomly oriented nanodot, and a unique evolution towards an isotropic vortex-pinning behaviour, even in the effective anisotropy, is achieved as the nanostrain turns isotropic. We suggest a new vortex-pinning mechanism based on the bond-contraction pairing model, where pair formation is quenched under tensile strain, forming new and effective core-pinning regions.

Llordes, Anna [ICMAB, Barcelona, Spain; Palau, A. [ICMAB, Barcelona, Spain; Gazquez, J. [Oak Ridge National Laboratory (ORNL); Coll, M. [ICMAB, Barcelona, Spain; Vlad, R. [ICMAB, Barcelona, Spain; Pomar, A. [ICMAB, Barcelona, Spain; Arbiol, Jordi [ICMAB, Barcelona, Spain; Guzman, Roger [ICMAB, Barcelona, Spain; Ye, S. [ICMAB, Barcelona, Spain; Rouco, V [ICMAB, Barcelona, Spain; Sandiumenge, Felip [ICMAB, Barcelona, Spain; Ricart, Susagna [ICMAB, Barcelona, Spain; Puig, Teresa [ICMAB, Barcelona, Spain; Varela del Arco, Maria [ORNL; Chataigner, D. [CRISMAT, Caen, France; Vanacken, J. [INPAC-Institute for Nanoscale Physics and Chemistry, Leuven, Belgium; Gutierrez, J. [INPAC-Institute for Nanoscale Physics and Chemistry, Leuven, Belgium; Moschalkov, V. [INPAC-Institute for Nanoscale Physics and Chemistry, Leuven, Belgium; Deutscher, G. [Tel Aviv University; Magen Dominguez, Cesar [ORNL; Obradors, Xavier [ICMAB, Barcelona, Spain

2012-01-01T23:59:59.000Z

368

Pair-production opacity at high and very-high gamma-ray energies  

E-Print Network (OSTI)

The propagation of high energy (HE, $E_\\gamma>100$ MeV) and very high-energy gamma-rays (VHE, $E_\\gamma>100$ GeV) in the extra-galactic photon field leads to pair-production and consequently energy- and distance-dependent attenuation of the primary intensity. The spectroscopy of an increasing number of extra-galactic objects at HE and VHE energies has demonstrated indeed the presence of such an attenuation which in turn has been used to constrain the photon density in the medium. At large optical depth ($\\tau\\gtrsim 2$) potential modifications of pair-production due to competing but rare processes (as, e.g., the presence of sub-neV axion-like particle) may be found. Indications for a pair-production anomaly have previously been found with VHE-spectra. Here, we present further indications (at the level of $3.68 \\sigma$) for a reduced optical depth at high energies from an analysis of Fermi-\\textit{LAT} data.

Dieter Horns; Manuel Meyer

2013-09-16T23:59:59.000Z

369

Constraints on the gluon PDF from top quark pair production at hadron colliders  

E-Print Network (OSTI)

Using the recently derived NNLO cross sections \\cite{Czakon:2013goa}, we provide NNLO+NNLL theoretical predictions for top quark pair production based on all the available NNLO PDF sets, and compare them with the most precise LHC and Tevatron data. In this comparison we study in detail the PDF uncertainty and the scale, $m_t$ and $\\alpha_s$ dependence of the theoretical predictions for each PDF set. Next, we observe that top quark pair production provides a powerful direct constraint on the gluon PDF at large $x$, and include Tevatron and LHC top pair data consistently into a global NNLO PDF fit. We then explore the phenomenological consequences of the reduced gluon PDF uncertainties, by showing how they can improve predictions for Beyond the Standard Model processes at the LHC. Finally, we update to full NNLO+NNLL the theoretical predictions for the ratio of top quark cross sections between different LHC center of mass energies, as well as the cross sections for hypothetical heavy fourth-generation quark production at the LHC.

Michal Czakon; Michelangelo L. Mangano; Alexander Mitov; Juan Rojo

2013-03-28T23:59:59.000Z

370

Calix[4]pyrrole: A New Ion-Pair Receptor As Demonstrated by Liquid-Liquid Extraction  

SciTech Connect

Solvent-extraction studies provide confirming evidence that meso-octamethylcalix[4]pyrrole acts as an ion-pair receptor for cesium chloride and cesium bromide in nitrobenzene solution. The stoichiometry of the interaction under extraction conditions from water to nitrobenzene was determined from plots of the cesium distribution ratios vs cesium salt and receptor concentration, indicating the formation of an ionpaired 1:1:1 cesium:calix[4]pyrrole:halide complex. The extraction results were modeled to evaluate the equilibria inherent to the solvent-extraction system, with either chloride or bromide. The binding energy between the halide anion and the calix[4]pyrrole was found to be about 7 kJ/mol larger for cesium chloride than for the cesium bromide. The ion-pairing free energies between the calix[4]pyrrole-halide complex and the cesium cation are nearly the same within experimental uncertainty for either halide, consistent with a structural model in which the Cs+ cation resides in the calix bowl. These results are unexpected since nitrobenzene is a polar solvent that generally leads to dissociated complexes in the organic phase when used as a diluent in extraction studies of univalent ions. Control studies involving nitrate revealed no evidence of ion pairing for CsNO3 under conditions identical to those where it is observed for CsCl and CsBr.

Wintergerst, Mr. Matthieu [Ecole Nationale Superieure de Chimie de Paris; Levitskaia, Tatiana G. [Pacific Northwest National Laboratory (PNNL); Moyer, Bruce A [ORNL; Sessler, Jonathan L. [University of Texas; Delmau, Laetitia Helene [ORNL

2008-01-01T23:59:59.000Z

371

Slowly fading super-luminous supernovae that are not pair-instability explosions  

E-Print Network (OSTI)

Super-luminous supernovae that radiate more than 10^44 ergs per second at their peak luminosity have recently been discovered in faint galaxies at redshifts of 0.1-4. Some evolve slowly, resembling models of 'pair-instability' supernovae. Such models involve stars with original masses 140-260 times that of the Sun that now have carbon-oxygen cores of 65-30 solar masses. In these stars, the photons that prevent gravitational collapse are converted to electron-positron pairs, causing rapid contraction and thermonuclear explosions. Many solar masses of 56Ni are synthesized; this isotope decays to 56Fe via 56Co, powering bright light curves. Such massive progenitors are expected to have formed from metal-poor gas in the early Universe. Recently, supernova 2007bi in a galaxy at redshift 0.127 (about 12 billion years after the Big Bang) with a metallicity one-third that of the Sun was observed to look like a fading pair-instability supernova. Here we report observations of two slow-to-fade super-luminous supernovae...

Nicholl, M; Jerkstrand, A; Inserra, C; McCrum, M; Kotak, R; Fraser, M; Wright, D; Chen, T -W; Smith, K; Young, D R; Sim, S A; Valenti, S; Howell, D A; Bresolin, F; Kudritzki, R P; Tonry, J L; Huber, M E; Rest, A; Pastorello, A; Tomasella, L; Cappellaro, E; Benetti, S; Mattila, S; Kankare, E; Kangas, T; Leloudas, G; Sollerman, J; Taddia, F; Berger, E; Chornock, R; Narayan, G; Stubbs, C W; Foley, R J; Lunnan, R; Soderberg, A; Sanders, N; Milisavljevic, D; Margutti, R; Kirshner, R P; Elias-Rosa, N; Morales-Garoffolo, A; Taubenberger, S; Botticella, M T; Gezari, S; Urata, Y; Rodney, S; Riess, A G; Scolnic, D; Wood-Vasey, W M; Burgett, W S; Chambers, K; Flewelling, H A; Magnier, E A; Kaiser, N; Metcalfe, N; Morgan, J; Price, P A; Sweeney, W; Waters, C

2013-01-01T23:59:59.000Z

372

Differential Pair Distribution Function Study of the Structure of Arsenate Adsorbed on Nanocrystalline [gamma]-Alumina  

SciTech Connect

Structural information is important for understanding surface adsorption mechanisms of contaminants on metal (hydr)oxides. In this work, a novel technique was employed to study the interfacial structure of arsenate oxyanions adsorbed on {gamma}-alumina nanoparticles, namely, differential pair distribution function (d-PDF) analysis of synchrotron X-ray total scattering. The d-PDF is the difference of properly normalized PDFs obtained for samples with and without arsenate adsorbed, otherwise identically prepared. The real space pattern contains information on atomic pair correlations between adsorbed arsenate and the atoms on {gamma}-alumina surface (Al, O, etc.). PDF results on the arsenate adsorption sample on {gamma}-alumina prepared at 1 mM As concentration and pH 5 revealed two peaks at 1.66 {angstrom} and 3.09 {angstrom}, corresponding to As-O and As-Al atomic pair correlations. This observation is consistent with those measured by extended X-ray absorption fine structure (EXAFS) spectroscopy, which suggests a first shell of As-O at 1.69 {+-} 0.01 {angstrom} with a coordination number of 4 and a second shell of As-Al at 3.13 {+-} 0.04 {angstrom} with a coordination number of 2. These results are in agreement with a bidentate binuclear coordination environment to the octahedral Al of {gamma}-alumina as predicted by density functional theory (DFT) calculation.

Li, Wei; Harrington, Richard; Tang, Yuanzhi; Kubicki, James D.; Aryanpour, Masoud; Reeder, Richard J.; Parise, John B.; Phillips, Brian L. (SBU); (Penn)

2012-03-15T23:59:59.000Z

373

Electron-Positron Pair Production in Structured Pulses of Electric Fields  

E-Print Network (OSTI)

The non-perturbative electron-positron pair production in time-dependent electric fields is investigated. The quantum kinetic formalism is employed in order to calculate the electron density for various field configurations. The corresponding set of first order, ordinary differential equations is analyzed and numerically solved. The focus of this study lies on the dynamically assisted Schwinger effect in pulsed electric fields with at least two different time scales. Furthermore, interference effects arising in setups with multiple pulses are examined and first results for an optimization of the particle number yield by pulse-shaping are given.

Christian Kohlfrst

2012-12-04T23:59:59.000Z

374

SUSY QCD Corrections to Higgs Pair Production from Bottom Quark Fusion  

E-Print Network (OSTI)

We present a complete next-to-leading order (NLO) calculation for the total cross section for inclusive Higgs pair production via bottom-quark fusion at the CERN Large Hadron Collider (LHC) in the minimal supersymmetric standard model (MSSM) and the minimal supergravity model (mSUGRA). We emphasize the contributions of squark and gluino loops (SQCD) and the decoupling properties of our results for heavy squark and gluino masses. The enhanced couplings of the b quark to the Higgs bosons in supersymmetric models with large tanb yield large NLO SQCD corrections in some regions of parameter space.

Sally Dawson; Chung Kao; Yili Wang

2007-10-23T23:59:59.000Z

375

A transmission matrix for a fused pair of integrable defects in the sine-Gordon model  

E-Print Network (OSTI)

Within the quantum sine-Gordon model a transmission matrix describing the scattering of a soliton with a fused pair of integrable defects is proposed. The result is consistent with the classical picture of scattering and highlights the differences between two defects located at separated points and two defects fused at the same point. Moreover, the analysis reveals how, for certain choices of parameters, both the soliton-soliton and the lightest-breather-soliton S-matrices of the sine-Gordon model are embedded within the transmission matrix, supporting an interpretation in which defects may be regarded as soliton constituents.

E. Corrigan; C. Zambon

2010-06-04T23:59:59.000Z

376

Thermodynamic properties of two-dimensional nonideal structures with isotropic pair potential  

SciTech Connect

An approximation is proposed for energy density in two-dimensional nonideal systems for a wide class of isotropic repulsive pair interparticle potentials. The approximation allows one to determine the main thermodynamic functions and characteristics of the system by using well-known thermodynamic formulas. The results obtained with the help of this approximation are compared with the data of numerical simulations of thermodynamic properties of the structures under study. The simulations were performed in a wide range of parameters typical of laboratory dusty plasmas. Main attention was paid to the screened Coulomb potential.

Vaulina, O. S. [Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation)

2009-05-15T23:59:59.000Z

377

EFFICIENT PARALLEL COMPUTATION OF ALL-PAIRS N-BODY ACCELERATION BY DO-LOOP FOLDING  

SciTech Connect

The computational load inside a do loop is equalized by folding the loop appropriately if the amount of load is a linear function of the loop index. Using this idea, we develop an efficient parallel computation scheme of Newtonian all-pairs N-body acceleration vectors with help from OpenMP architecture. Using a consumer PC with a quad-core eight-thread processor, the new parallel scheme runs 4.2-4.9 times faster than a serial computation when the number of particles exceeds a few hundred.

Fukushima, Toshio, E-mail: Toshio.Fukushima@nao.ac.jp [National Astronomical Observatory, Ohsawa, Mitaka, Tokyo 181-8588 (Japan)

2011-07-15T23:59:59.000Z

378

Quantitative Nanostructure Characterization Using Atomic Pair Distribution Functions Obtained From Laboratory Electron Microscopes  

Science Conference Proceedings (OSTI)

Quantitatively reliable atomic pair distribution functions (PDFs) have been obtained from nanomaterials in a straightforward way from a standard laboratory transmission electron microscope (TEM). The approach looks very promising for making electron derived PDFs (ePDFs) a routine step in the characterization of nanomaterials because of the ubiquity of such TEMs in chemistry and materials laboratories. No special attachments such as energy filters were required on the microscope. The methodology for obtaining the ePDFs is described as well as some opportunities and limitations of the method.

Abeykoon M.; Billinge S.; Malliakas, C.D.; Juhas, P.; Bozin, E.S.; Kanatzidis, M.G.

2012-05-01T23:59:59.000Z

379

mTGen: mass scale measurements in pair-production at colliders  

E-Print Network (OSTI)

some momenta as if they were the result of the decays from the pair of partons produced in the primary 2 ? 2 process used in the matrix element, and to treat other momenta as if they were the result of initial state radiation (ISR). We will therefore... are omitted from F ), or will be smeared above the endpoint (when ISR with unusually large transverse momentum is added to F in error). In a real event, we do not know from which side1 of the event any particular observed particle has come. If we did know...

Lester, Christopher G; Barr, Alan

2007-01-01T23:59:59.000Z

380

Pairing phenomenon in doubly odd neutron rich {sup 136}Sb nucleus  

Science Conference Proceedings (OSTI)

Based on p-n and n-n pairing gap energies giving by K. Kaneko et al. (2003), we make modifications on the kh5082 interaction. Calculations and study of some nuclear properties for {sup 136}Sb nucleus are developed in the framework of the nuclear shell model by means of OXBASH structure code. We get the same energetic sequence as the recent experimental values of single particle energies. The effective charge values e{sub p}=1.35e and e{sub n}=0.9e, and factors given by V. I. Isakov are used to evaluate multipole electromagnetic moments.

Laouet, N.; Benrachi, F. [Laboratoire de Physique Mathematique et Subatomique Mentouri University, Constantine (Algeria)

2012-06-27T23:59:59.000Z

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381

Ultranarrow-Band Photon Pair Source Compatible with Solid State Quantum Memories and Telecommunication Networks  

E-Print Network (OSTI)

We report on a source of ultranarrow-band photon pairs generated by widely nondegenerate cavity-enhanced spontaneous down-conversion. The source is designed to be compatible with Pr3+ solid state quantum memories and telecommunication optical fibers, with signal and idler photons close to 606 nm and 1436 nm, respectively. Both photons have a spectral bandwidth around 2 MHz, matching the bandwidth of Pr3+ doped quantum memories. This source is ideally suited for long distance quantum communication architectures involving solid state quantum memories.

Julia Fekete; Daniel Rielander; Matteo Cristiani; Hugues de Riedmatten

2013-04-25T23:59:59.000Z

382

Finite Size Effects on the Real-Space Pair Distribution Function of Nanoparticles  

SciTech Connect

The pair distribution function (PDF) method is a powerful approach for the analysis of the structure of nanoparticles. An important approximation used in nanoparticle PDF simulations is the incorporation of a form factor describing nanoparticle size and shape. The precise effect of the form factor on the PDF is determined by both particle shape and structure if these characteristics are both anisotropic and correlated. The correct incorporation of finite size effects is important for distinguishing and quantifying the structural consequences of small particle size in nanomaterials.

Gilbert, Benjamin

2008-10-01T23:59:59.000Z

383

Search for pair production of the scalar top quark in muon+tau final states  

E-Print Network (OSTI)

We present a search for the pair production of scalar top quarks ($\\tilde{t}_{1}$), the lightest supersymmetric partners of the top quarks, in $p\\bar{p}$ collisions at a center-of-mass energy of 1.96 TeV, using data corresponding to an integrated luminosity of {7.3 $fb^{-1}$} collected with the \\dzero experiment at the Fermilab Tevatron Collider. Each scalar top quark is assumed to decay into a $b$ quark, a charged lepton, and a scalar neutrino ($\\tilde{\

D0 Collaboration; V. M. Abazov; B. Abbott; B. S. Acharya; M. Adams; T. Adams; G. D. Alexeev; G. Alkhazov; A. Alton; G. Alverson; M. Aoki; A. Askew; B. Asman; S. Atkins; O. Atramentov; K. Augsten; C. Avila; J. BackusMayes; F. Badaud; L. Bagby; B. Baldin; D. V. Bandurin; S. Banerjee; E. Barberis; P. Baringer; J. Barreto; J. F. Bartlett; U. Bassler; V. Bazterra; A. Bean; M. Begalli; C. Belanger-Champagne; L. Bellantoni; S. B. Beri; G. Bernardi; R. Bernhard; I. Bertram; M. Besancon; R. Beuselinck; V. A. Bezzubov; P. C. Bhat; S. Bhatia; V. Bhatnagar; G. Blazey; S. Blessing; K. Bloom; A. Boehnlein; D. Boline; E. E. Boos; G. Borissov; T. Bose; A. Brandt; O. Brandt; R. Brock; G. Brooijmans; A. Bross; D. Brown; J. Brown; X. B. Bu; M. Buehler; V. Buescher; V. Bunichev; S. Burdin; T. H. Burnett; C. P. Buszello; B. Calpas; E. Camacho-Perez; M. A. Carrasco-Lizarraga; B. C. K. Casey; H. Castilla-Valdez; S. Chakrabarti; D. Chakraborty; K. M. Chan; A. Chandra; E. Chapon; G. Chen; S. Chevalier-Thery; D. K. Cho; S. W. Cho; S. Choi; B. Choudhary; S. Cihangir; D. Claes; J. Clutter; M. Cooke; W. E. Cooper; M. Corcoran; F. Couderc; M. -C. Cousinou; A. Croc; D. Cutts; A. Das; G. Davies; S. J. de Jong; E. De La Cruz-Burelo; F. Deliot; R. Demina; D. Denisov; S. P. Denisov; S. Desai; C. Deterre; K. DeVaughan; H. T. Diehl; M. Diesburg; P. F. Ding; A. Dominguez; T. Dorland; A. Dubey; L. V. Dudko; D. Duggan; A. Duperrin; S. Dutt; A. Dyshkant; M. Eads; D. Edmunds; J. Ellison; V. D. Elvira; Y. Enari; H. Evans; A. Evdokimov; V. N. Evdokimov; G. Facini; T. Ferbel; F. Fiedler; F. Filthaut; W. Fisher; H. E. Fisk; M. Fortner; H. Fox; S. Fuess; A. Garcia-Bellido; G. A. Garcia-Guerra; V. Gavrilov; P. Gay; W. Geng; D. Gerbaudo; C. E. Gerber; Y. Gershtein; G. Ginther; G. Golovanov; A. Goussiou; P. D. Grannis; S. Greder; H. Greenlee; Z. D. Greenwood; E. M. Gregores; G. Grenier; Ph. Gris; J. -F. Grivaz; A. Grohsjean; S. Grunendahl; M. W. Grunewald; T. Guillemin; G. Gutierrez; P. Gutierrez; A. Haas; S. Hagopian; J. Haley; L. Han; K. Harder; A. Harel; J. M. Hauptman; J. Hays; T. Head; T. Hebbeker; D. Hedin; H. Hegab; A. P. Heinson; U. Heintz; C. Hensel; I. Heredia-De La Cruz; K. Herner; G. Hesketh; M. D. Hildreth; R. Hirosky; T. Hoang; J. D. Hobbs; B. Hoeneisen; M. Hohlfeld; Z. Hubacek; V. Hynek; I. Iashvili; Y. Ilchenko; R. Illingworth; A. S. Ito; S. Jabeen; M. Jaffre; D. Jamin; A. Jayasinghe; R. Jesik; K. Johns; M. Johnson; A. Jonckheere; P. Jonsson; J. Joshi; A. W. Jung; A. Juste; K. Kaadze; E. Kajfasz; D. Karmanov; P. A. Kasper; I. Katsanos; R. Kehoe; S. Kermiche; N. Khalatyan; A. Khanov; A. Kharchilava; Y. N. Kharzheev; J. M. Kohli; A. V. Kozelov; J. Kraus; S. Kulikov; A. Kumar; A. Kupco; T. Kurca; V. A. Kuzmin; S. Lammers; G. Landsberg; P. Lebrun; H. S. Lee; S. W. Lee; W. M. Lee; J. Lellouch; H. Li; L. Li; Q. Z. Li; S. M. Lietti; J. K. Lim; D. Lincoln; J. Linnemann; V. V. Lipaev; R. Lipton; Y. Liu; A. Lobodenko; M. Lokajicek; R. Lopes de Sa; H. J. Lubatti; R. Luna-Garcia; A. L. Lyon; A. K. A. Maciel; D. Mackin; R. Madar; R. Magana-Villalba; S. Malik; V. L. Malyshev; Y. Maravin; J. Martinez-Ortega; R. McCarthy; C. L. McGivern; M. M. Meijer; A. Melnitchouk; D. Menezes; P. G. Mercadante; M. Merkin; A. Meyer; J. Meyer; F. Miconi; N. K. Mondal; G. S. Muanza; M. Mulhearn; E. Nagy; M. Naimuddin; M. Narain; R. Nayyar; H. A. Neal; J. P. Negret; P. Neustroev; S. F. Novaes; T. Nunnemann; G. Obrant; J. Orduna; N. Osman; J. Osta; G. J. Otero y Garzon; M. Padilla; A. Pal; N. Parashar; V. Parihar; S. K. Park; R. Partridge; N. Parua; A. Patwa; B. Penning; M. Perfilov; Y. Peters; K. Petridis; G. Petrillo; P. Petroff; R. Piegaia; M. -A. Pleier; P. L. M. Podesta-Lerma; V. M. Podstavkov; P. Polozov; A. V. Popov; M. Prewitt; D. Price; N. Prokopenko; J. Qian; A. Quadt; B. Quinn; M. S. Rangel; K. Ranjan; P. N. Ratoff; I. Razumov; P. Renkel; M. Rijssenbeek; I. Ripp-Baudot; F. Rizatdinova; M. Rominsky; A. Ross; C. Royon; P. Rubinov; R. Ruchti; G. Safronov; G. Sajot; P. Salcido; A. Sanchez-Hernandez; M. P. Sanders; B. Sanghi; A. S. Santos; G. Savage; L. Sawyer; T. Scanlon; R. D. Schamberger; Y. Scheglov; H. Schellman; T. Schliephake; S. Schlobohm; C. Schwanenberger; R. Schwienhorst; J. Sekaric; H. Severini; E. Shabalina; V. Shary; A. A. Shchukin; R. K. Shivpuri; V. Simak; V. Sirotenko; P. Skubic; P. Slattery; D. Smirnov; K. J. Smith; G. R. Snow; J. Snow; S. Snyder; S. Soldner-Rembold; L. Sonnenschein; K. Soustruznik; J. Stark; V. Stolin; D. A. Stoyanova; M. Strauss; D. Strom; L. Stutte; L. Suter; P. Svoisky; M. Takahashi; A. Tanasijczuk; M. Titov; V. V. Tokmenin; Y. -T. Tsai; K. Tschann-Grimm; D. Tsybychev; B. Tuchming; C. Tully; L. Uvarov; S. Uvarov; S. Uzunyan; R. Van Kooten; W. M. van Leeuwen; N. Varelas; E. W. Varnes; I. A. Vasilyev; P. Verdier; L. S. Vertogradov; M. Verzocchi; M. Vesterinen; D. Vilanova; P. Vokac

2012-02-09T23:59:59.000Z

384

Polarization Diversity Pulse-Pair Technique for Millimeter-WaveDoppler Radar Measurements of Severe Storm Features  

Science Conference Proceedings (OSTI)

The Polarization Diversity Pulse-Pair (PDPP) technique can extend simultaneously the maximum unambiguous range and the maximum unambiguous velocity of a Doppler weather radar. This technique has been applied using a high-resolution 95-GHz radar ...

Andrew L. Pazmany; John C. Galloway; James B. Mead; Ivan Popstefanija; Robert E. McIntosh; Howard W. Bluestein

1999-12-01T23:59:59.000Z

385

Pairing in exotic neutron rich nuclei around the drip line and in the crust of neutron stars  

E-Print Network (OSTI)

Exotic and drip-line nuclei as well as nuclei immersed in a low density gas of neutrons in the outer crust of neutron stars are systematically investigated with respect to their neutron pairing properties. This is done using Skyrme density-functional and different pairing forces such as a density-dependent contact interaction and a separable form of a finite-range Gogny interaction. Hartree-Fock-Bogoliubov and BCS theories are compared. It is found that neutron pairing is reduced towards the drip line while overcast by strong shell effects. Furthermore resonances in the continuum can have an important effect counterbalancing the tendency of reduction and leading to a persistence of pairing at the drip line. It is also shown that in these systems the difference between HFB and BCS approaches can be qualitatively large.

A. Pastore; J. Margueron; P. Schuck; X. Vias

2013-03-22T23:59:59.000Z

386

Bound-free pair production cross section in heavy-ion colliders from the equivalent photon approach  

E-Print Network (OSTI)

Exact calculations of the electron-positron pair production by a single photon in the Coulomb field of a nucleus with simultaneous capture of the electron into the K-shell are discussed for different nuclear charges. Using the equivalent photon method of Weizsaecker and Williams, a simple expression for the bound-free production of electron-positron pairs by colliding very-high-energy fully stripped heavy ions is derived for nuclei of arbitrary charge.

Andreas Aste

2007-10-23T23:59:59.000Z

387

Charged Higgs and Neutral Higgs pair production of weak gauge bosons fusion process in e+ e- collision  

E-Print Network (OSTI)

In this paper, we study the pair production and their decays of the Higges in the neutrinophilic Higgs two doublet model. The pair production occurs through W and Z gauge bosons fusion process. In the neutrinophilic model, the vacuum expectation value (VEV) of the second Higgs doublet is small and is proportional to the neutrino mass. The smallness of VEV is associated with the approximate global U(1) symmetry which is slightly broken. Therefore, there is a suppression factor for the U(1) charge breaking process. The second Higgs doublet has U(1) charge and its single production from the gauge boson fusion violates the U(1) charge conservation and is suppressed strongly to occur. In contrast to the single production, the pair production of the Higgses conserves U(1) charge and the approximate symmetry does not forbid it. To search for the pair productions in collider experiment,we study the production cross section of a pair of the charged Higgs and neutral Higgs bosons in e+ e- collision with center of energy from 600 (GeV) to 2000 (GeV). The total cross section varies from 10^{-4}(fb) to 10^{-3}(fb) for degenerate (200 GeV) charged and neutral Higgses mass case. The background process to the signal is gauge bosons pair W + Z production and their decays. We show the signal over background ratio is about 2% ~ 3% by combining the cross section ratio with ratios of branching fractions.

Takuya Morozumi; Kotaro Tamai

2013-06-07T23:59:59.000Z

388

Electrodynamics of Magnetars III: Pair Creation Processes in an Ultrastrong Magnetic Field and Particle Heating in a Dynamic Magnetosphere  

E-Print Network (OSTI)

We consider the details of the QED processes that create electron-positron pairs in magnetic fields approaching and exceeding 10^{14} G. The formation of free and bound pairs is addressed, and the importance of positronium dissociation by thermal X-rays is noted. We calculate the collision cross section between an X-ray and a gamma ray, and point out a resonance in the cross section when the gamma ray is close to the threshold for pair conversion. We also discuss how the pair creation rate in the open-field circuit and the outer magnetosphere can be strongly enhanced by instabilities near the light cylinder. When the current has a strong fluctuating component, a cascade develops. We examine the details of particle heating, and show that a high rate of pair creation can be sustained close to the star, but only if the spin period is shorter than several seconds. The dissipation rate in this turbulent state can easily accommodate the observed radio output of the transient radio-emitting magnetars, and even their infrared emission. Finally, we outline how a very high rate of pair creation on the open magnetic field lines can help to stabilize a static twist in the closed magnetosphere and to regulate the loss of magnetic helicity by reconnection at the light cylinder.

Christopher Thompson

2008-02-19T23:59:59.000Z

389

Vector-boson pair production at the LHC to $\\mathcal{O}(\\alpha^3)$ accuracy  

E-Print Network (OSTI)

Building on earlier work on electroweak corrections to W-pair production, the first calculation of the full electroweak one-loop corrections to on-shell ZZ, W$^{\\pm}$Z and $\\gamma\\gamma$ production at hadron colliders is presented, explicitly taking into account the full vector-boson mass dependence. As a consequence, our results are valid in the whole energy range probed by LHC experiments. Until now, the electroweak corrections have only been known in dedicated high-energy approximations limited to a specific kinematic regime, in particular requiring high boson transverse momenta. Therefore, our results comprise an important and so far missing ingredient to improve on the theory predictions for these fundamental Standard-Model benchmark processes also at intermediate energies and small scattering angles, where actually the bulk of events is located. In case of Z-pair production we have also included the leptonic decays and the associated weak corrections in our analysis. For this particular channel, correct...

Bierweiler, Anastasiya; Khn, Johann H

2013-01-01T23:59:59.000Z

390

Vector-boson pair production at the LHC to $\\mathcal{O}(?^3)$ accuracy  

E-Print Network (OSTI)

Building on earlier work on electroweak corrections to W-pair production, the first calculation of the full electroweak one-loop corrections to on-shell ZZ, W$^{\\pm}$Z and $\\gamma\\gamma$ production at hadron colliders is presented, explicitly taking into account the full vector-boson mass dependence. As a consequence, our results are valid in the whole energy range probed by LHC experiments. Until now, the electroweak corrections have only been known in dedicated high-energy approximations limited to a specific kinematic regime, in particular requiring high boson transverse momenta. Therefore, our results comprise an important and so far missing ingredient to improve on the theory predictions for these fundamental Standard-Model benchmark processes also at intermediate energies and small scattering angles, where actually the bulk of events is located. In case of Z-pair production we have also included the leptonic decays and the associated weak corrections in our analysis. For this particular channel, corrections of about -4% are observed even close to the production threshold. For hard scattering processes with momentum transfers of several hundred GeV one finds large negative corrections which may amount to several tens of percent and lead to significant distortions of transverse-momentum and rapidity distributions.

Anastasiya Bierweiler; Tobias Kasprzik; Johann H. Khn

2013-05-23T23:59:59.000Z

391

High-spin structures of 124-131Te: Competition of proton and neutron pair breakings  

E-Print Network (OSTI)

The 124-131Te nuclei have been produced as fission fragments in two fusion reactions induced by heavy-ions (12C + 238U at 90 MeV bombarding energy and 18O + 208Pb at 85 MeV) and studied with the Euroball array. Their high-spin level schemes have been extended to higher excitation energy from the triple gamma-ray coincidence data. The gamma-gamma angular correlations have been analyzed in order to assign spin and parity values to many observed states. Moreover the half-lives of isomeric states have been measured from the delayed coincidences between the fission-fragment detector SAPhIR and Euroball, as well as from the timing information of the Ge detectors. The behaviors of the yrast structures identified in the present work are first discussed in comparison with the general features known in the mass region, particularly the breakings of neutron pairs occupying the nuh11/2 orbit identified in the neighboring Sn nuclei. The experimental level schemes are then compared to shell-model calculations performed in this work. The analysis of the wave functions shows the effects of the proton-pair breaking along the yrast lines of the heavy Te isotopes.

A. Astier; M. -G. Porquet; Ts. Venkova; Ch. Theisen; G. Duchene; F. Azaiez; G. Barreau; D. Curien; I. Deloncle; O. Dorvaux; B. J. P. Gall; M. Houry; R. Lucas; N. Redon; M. Rousseau; O. Stezowski

2013-12-17T23:59:59.000Z

392

Stacking fault energy decrease in austenitic stainless steels induced by hydrogen pairs formation  

Science Conference Proceedings (OSTI)

The decrease of the Stacking Fault Energy (SFE), induced by hydrogen in austenitic stainless steels, was always invoked to explain the formation of {epsilon}-martensite at room temperature during cathodic charging of hydrogen. Pontini and Hermida measured by XRD a reduction of 37 pct of the SPE of an AISI 304 steel at room temperature, in the presence of only 274 ppm of hydrogen. However, the nature of this phenomenon is still unknown. Recently, Obiol et a., using the Atoms Superposition and Electron Delocalization-Molecular Obital (ASED-MO) method, calculated the binding energy for H-H pair formation in the faulted zone of an FCC iron matrix. It was shown that, the H-H pair formation is more likely to occur along directions connecting octahedral interstices of the HCP stacking sequence and that are normal to the {l_brace}111{r_brace} planes. The binding energy found was {minus}5.75 eV, being this value significantly larger than the corresponding one for vacuum: {minus}4.75 eV. In this work, an explanation of the SFE decrease is developed on the basis of this previous result.

Hermida, J.D. [C.A.C.-CNEA, San Martin (Argentina). Dept. de Materiales] [C.A.C.-CNEA, San Martin (Argentina). Dept. de Materiales; Roviglione, A. [Faculty de Ingenieria, Uba (Argentina). Dept. de Ingenieria Mecanica y Naval] [Faculty de Ingenieria, Uba (Argentina). Dept. de Ingenieria Mecanica y Naval

1998-09-15T23:59:59.000Z

393

Spiral Disk Opacity from Occulting Galaxy Pairs in the Sloan Digital Sky Survey  

E-Print Network (OSTI)

A spiral galaxy partially ovelapping a more distant elliptical offers an unique opportunity to measure the dust extinction in the foreground spiral. From the Sloan Digital Sky Survey DR4 spectroscopic sample, we selected 83 occulting galaxy pairs and measured disk opacity over the redshift range z = 0.0-0.2 with the goal to determine the recent evolution of disk dust opacity. The enrichment of the ISM changes over the lifetime of a disk and it is reasonable to expect the dust extinction properties of spiral disks as a whole to change over their lifetime. When they do, the change will affect our measurements of galaxies over the observable universe. From the SDSS pairs we conclude that spiral disks show evidence of extinction to ~2 effective radii. However, no evidence for recent evolution of disk opacity is evident, due to the limited redshift range and our inability to distinguish other factors on disk opacity such as the presence of spiral arms and Hubble type. Such effects also mask any relation between su...

Holwerda, B W; Bolton, A

2007-01-01T23:59:59.000Z

394

Control of decoherence in the generation of photon pairs from atomic ensembles  

E-Print Network (OSTI)

We report an investigation to establish the physical mechanisms responsible for decoherence in the generation of photon pairs from atomic ensembles, via the protocol of Duan et. al for long distance quantum communication [Nature (London) 414, 413 (2001)] and present the experimental techniques necessary to properly control the process. We develop a theory to model in detail the decoherence process in experiments with magneto-optical traps. The inhomogeneous broadening of the ground state by the trap magnetic field is identified as the principal mechanism for decoherence. In conjunction with our theoretical analysis, we report a series of measurements to characterize and control the coherence time in our experimental setup. We use copropagating stimulated Raman spectroscopy to access directly the ground state energy distribution of the ensemble. These spectroscopic measurements allow us to switch off the trap magnetic field in a controlled way, optimizing the repetition rate for single-photon measurements. With the magnetic field off, we then measure nonclassical correlations for pairs of photons generated by the ensemble as a function of the storage time of the single collective atomic excitation. We report coherence times longer than 10 microseconds, corresponding to an increase of two orders of magnitude compared to previous results in cold ensembles. The coherence time is now two orders of magnitude longer than the duration of the excitation pulses. The comparison between these experimental results and the theory shows good agreement. Finally, we employ our theory to devise ways to improve the experiment by optical pumping to specific initial states.

D. Felinto; C. W. Chou; H. de Riedmatten; S. V. Polyakov; H. J. Kimble

2005-07-13T23:59:59.000Z

395

Electrostatic soliton and double layer structures in unmagnetized degenerate pair plasmas  

SciTech Connect

The acoustic solitons and double layers are studied in unmagnetized quantum electron-positron plasmas in the presence of stationary ions. The quantum hydrodynamic model is employed and reductive perturbation method is used to derive the Korteweg-de Vries (KdV) and extended KdV equations for solitons and double layers, respectively. It is found that in the linear limit both slow acoustic and fast Langmuir waves can propagate in such type of quantum plasmas like in classical pair-ion or pair plasmas. The amplitude and width of the electrostatic solitons are found to be decreasing with the increase in concentration of positrons (or decrease in the concentration of ions) in degenerate electron-positron-ion plasmas. It is found that only rarefactive double layer can exist in such plasmas which depend on various parameters. The dependence of double layer structure on ion concentration and quantum diffraction effects of electrons and positrons are also discussed. The results are also elaborated graphically by considering dense plasma parameters in the outer layers of astrophysical objects such as white dwarfs and neutron stars.

Mahmood, S. [Theoretical Plasma Physics Division (TPPD), PINSTECH, P.O. Nilore, Islamabad 44000 (Pakistan); National Centre for Physics, Quaid-i-Azam University Campus, Shahdra Valley Road, Islamabad 44000 (Pakistan); Department of Physics and Applied Mathematics (DPAM), PIEAS, P.O. Nilore, Islamabad 44000 (Pakistan); Khan, S. A. [National Centre for Physics, Quaid-i-Azam University Campus, Shahdra Valley Road, Islamabad 44000 (Pakistan); Department of Physics, COMSATS Institute of Information Technology (CIIT), Islamabad 44000 (Pakistan); Ur-Rehman, H. [Theoretical Plasma Physics Division (TPPD), PINSTECH, P.O. Nilore, Islamabad 44000 (Pakistan); Department of Physics and Applied Mathematics (DPAM), PIEAS, P.O. Nilore, Islamabad 44000 (Pakistan)

2010-11-15T23:59:59.000Z

396

Correction method for obtaining the variationally best ground-state pair density  

SciTech Connect

We present a correction method for the pair density (PD) to get close to the ground-state one. The PD is corrected to be a variationally best PD within the search region that is extended by adding the uniformly scaled PDs to its elements. The corrected PD is kept N-representable and satisfies the virial relation rigorously. The validity of the present method is confirmed by numerical calculations of neon atom. It is shown that the root-mean-square error of the electron-electron interaction and external potential energies, which is a good benchmark for the error of the PD, is reduced by 69.7% without additional heavy calculations.

Higuchi, Masahiko; Higuchi, Katsuhiko [Department of Physics, Faculty of Science, Shinshu University, Matsumoto 390-8621 (Japan); Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima 739-8527 (Japan)

2011-10-15T23:59:59.000Z

397

On the eigenfunctions of no-pair operators in classical magnetic fields  

E-Print Network (OSTI)

We consider a relativistic no-pair model of a hydrogenic atom in a classical, exterior magnetic field. First, we prove that the corresponding Hamiltonian is semi-bounded below, for all coupling constants less than or equal to the critical one known for the Brown-Ravenhall model, i.e., for vanishing magnetic fields. We give conditions ensuring that its essential spectrum equals [1,\\infty) and that there exist infinitely many eigenvalues below 1. (The rest energy of the electron is 1 in our units.) Assuming that the magnetic vector potential is smooth and that all its partial derivatives increase subexponentially, we finally show that an eigenfunction corresponding to an eigenvalue \\lambdarate a<(1-\\lambda^2)^{1/2}, for \\lambda\\in[0,1), and a<1, for \\lambda<0.

Oliver Matte; Edgardo Stockmeyer

2008-10-27T23:59:59.000Z

398

Advanced Residential Envelopes for Two Pair of Energy-Saver Homes  

SciTech Connect

Four homes are under construction in the Tennessee Valley to showcase homes that are at least 50% energy savers as compared to homes built to local code. Schaad Companies LLC, the Tennessee Valley Authority (TVA), the Oak Ridge National Laboratory (ORNL), Barber McMurry Architects (BMA) and the Department of Energy (DOE) intend to transform new and existing buildings into affordable, durable and efficient housing. All formed a private- and federal-sector consortium herein called the Zero Energy Building Research Alliance (ZEBRA). The consortium is about to evaluate the market viability for making two pairs of homes 50 percent more energy efficient than homes of similar size and style. Achieving the goal requires the most advanced building technology, products and techniques available. The homes are located on adjacent cul-de-sacs and are unoccupied for the duration of a two-year field study, thereby eliminating the confounding issue of occupancy habits.

Miller, William A [ORNL; Karagiozis, Achilles N [ORNL; Kosny, Jan [ORNL; Shrestha, Som S [ORNL; Christian, Jeffrey E [ORNL; Kohler, Christian [Lawrence Berkeley National Laboratory (LBNL); Dinse, David [Tennessee Valley Authority (TVA)

2010-01-01T23:59:59.000Z

399

Discrete spectrum of a pair of nonsymmetric waveguides coupled by a window  

E-Print Network (OSTI)

In the paper we study the discrete spectrum of a pair of quantum two-dimensional waveguides having common boundary in which a window of finite length is cut out. We study the phenomenon of new eigenvalues emerging from the threshold of the essential spectrum when the length of window passes through critical values. We construct the asymptotics expansions for the emerging eigenvalues with respect to small parameter which is the difference between current length of the window and the nearest critical value. We also study the behaviour of the spectrum when the length of the window increases unboundedly and construct asymptotics expansions with respect to great parameter which is a length of the window.

Denis I. Borisov

2005-12-20T23:59:59.000Z

400

High-precision molecular dynamics simulation of UO2-PuO2: pair potentials comparison  

E-Print Network (OSTI)

Our series of articles is devoted to high-precision molecular dynamics simulation of mixed actinide-oxide (MOX) fuel in the rigid ions approximation using high-performance graphics processors (GPU). In the first article we assess 10 most relevant interatomic sets of pair potentials (SPP) by reproduction of solid phase properties of uranium dioxide (UO2) - temperature dependences of the lattice constant, bulk modulus, enthalpy and heat capacity. Measurements were performed with 1K accuracy in a wide temperature range from 300K up to melting point. The best results are demonstrated by two recent SPPs MOX-07 and Yakub-09, which both had been fitted to the recommended thermal expansion in the range of temperatures 300-3100K. Compared with them, the widely used SPPs Basak-03 and Morelon-03 reproduce the experimental data noticeably worse at temperatures above 2500K.

Potashnikov, S I; Nekrasov, K A; Kupryazhkin, A Ya

2011-01-01T23:59:59.000Z

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401

A close-tap pair design of buried-foil capacitors  

Science Conference Proceedings (OSTI)

For many years the standard weak-link, pulse-discharge capacitors for DOE systems have utilized either the dry-wrap-and-fill, buried-foil Mylar capacitor or the Flourinert-filled, extended-foil Mylar capacitor designs. New stringent system requirements demanded a low-inductance, weak-link capacitor with higher energy density than the dry-wrap-and-fill, extended-foil Mylar capacitor. The hoop-shaped requirement, so that vital components could be thermally protected inside the weak-link capacitor, made the Flourinert capacitor design too expensive, complex and impractical. The low-inductance requirement eliminated the standard dry-wrap-and-fill, buried-foil design. This paper discusses evolvement of the close-tap-pair design of a buried-foil capacitor, which resulted in a capacitor that met the volume, shape, inductance, and reliability requirements.

Brooks, R.A.; Edwards, L.R.

1996-02-01T23:59:59.000Z

402

Neutrino emission by the pair, plasma, and photo processes in the Weinberg-Salam model  

Science Conference Proceedings (OSTI)

The results of numerical integrations of the rates and emissivities of the photo, pair, and plasma neutrino emission mechanisms in the Weinberg-Salam theory of the weak interaction are presented. The range of densities 10 gm cm/sup -3/ less than or equal to rho < 10/sup 14/ gm cm/sup -3/ and the temperature range 10/sup 8/K less than or equal to T less than or equal to 10/sup 11/K are considered. Fitting formulae, similar to those provided by Beaudet, Petrosian, and Salpeter, which reproduce the numerical result for the total emissivity to within 20% in the temperature range 10/sup 8.2/K less than or equal to T less than or equal to 10/sup 11/K are presented. 24 refs., 21 figs., 1 tab.

Schinder, P.J.; Schramm, D.N.; Witta, P.J.; Margolis, S.H.; Tubbs, D.L.

1986-06-01T23:59:59.000Z

403

Ship and satellite observations of chlorophyl stocks in interacting cyclone-anticyclone eddy pairs in the western Gulf of Mexico  

SciTech Connect

When anticyclonic eddies shed by the Loop Current of the Gulf of Mexico reach the western margin of the gulf, they influence the surface circulation over the continental slope and rise. Of particular interest is the generation of cyclone (cold-core)- anticyclone (warm-core) pairs when aging Loop Current eddies interact with the continental margin. In this paper the authors describe the physical and biological characteristics of these cyclone-anticyclone pairs. Their objective was to determine how eddy pairs affect the distribution of phytoplankton in the region and how satellite ocean color measurements are applicable to tracing of the eddies. They present shipboard data collected between 1980 and 1982 on the hydrography, chlorophyll stocks, and nutrient concentrations of eddy pairs in the western Gulf of Mexico and compare these data with coastal zone color scanner (CZCS) images collected during the time frame of the cruises. Surface pigment concentrations followed a seasonal cycle, with low concentrations (0.05-0.1 mg m{sup {minus}3}) found within cyclones and anticyclones from April through early November and higher concentrations (>0.1 mg m{sup {minus}3}) found in the winter. CZCS pigment concentrations were locally high in the flow confluence of cyclone-anticyclone pairs. The CZCS imagery shows that some cyclone-anticyclone geometries transport high-chlorophyll shelf water seaward at least 100-200 km off-shelf. 46 figs., 9 figs., 3 tabs.

Biggs, D.C. [Texas A& M Univ., College Station, TX (United States)] [Texas A& M Univ., College Station, TX (United States); Mueller-Karger, F.E. [Univ. of South Florida, St. Petersburg, FL (United States)] [Univ. of South Florida, St. Petersburg, FL (United States)

1994-04-15T23:59:59.000Z

404

Ultrafast deactivation processes in the 2-aminopyridine dimer and the adenine-thymine base pair: Similarities and differences  

SciTech Connect

2-aminopyridine dimer has frequently been used as a model system for studying photochemistry of DNA base pairs. We examine here the relevance of 2-aminopyridine dimer for a Watson-Crick adenine-thymine base pair by studying UV-light induced photodynamics along two main hydrogen bridges after the excitation to the localized {sup 1}{pi}{pi}* excited-state. The respective two-dimensional potential-energy surfaces have been determined by time-dependent density functional theory with Coulomb-attenuated hybrid exchange-correlation functional (CAM-B3LYP). Different mechanistic aspects of the deactivation pathway have been analyzed and compared in detail for both systems, while the related reaction rates have also be obtained from Monte Carlo kinetic simulations. The limitations of the 2-aminopyridine dimer as a model system for the adenine-thymine base pair are discussed.

Ai Yuejie; Zhang Feng [College of Chemistry, Beijing Normal University, Beijing 100875 (China); Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-10691 Stockholm (Sweden); Cui Ganglong; Fang Weihai [College of Chemistry, Beijing Normal University, Beijing 100875 (China); Luo Yi [Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-10691 Stockholm (Sweden); Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China)

2010-08-14T23:59:59.000Z

405

Spin-polaron theory of high-{Tc} superconductivity: I, spin polarons and high-{Tc} pairing  

SciTech Connect

The concept of a spin polaron is introduced and contrasted with the more familiar ionic polaron picture. A brief review of aspects of ionic bipolaronic superconductivity is given with particular emphasis on the real-space pairing and true Bose condensation characteristics. The formation energy of spin polarons is then calculated in analogy with ionic polarons. The spin-flip energy of a Cu spin in an antiferromagnetically aligned CuO{sub 2} plane is discussed. It is shown that the introduction of holes into the CuO{sub 2} planes will always lead to the destruction of long-range AF ordering due to the formation of spin polarons. The pairing of two spin polarons can be expected because of the reestablishment of local (short-range) AF ordering; the magnitude of the pairing energy is estimated using a simplified model. The paper closes with a brief discussion of the formal theory of spin polarons.

Wood, R.F.

1993-06-01T23:59:59.000Z

406

Complete population transfer in a three-state quantum system by a train of pairs of coincident pulses  

E-Print Network (OSTI)

A technique for complete population transfer between the two end states $\\ket{1}$ and $\\ket{3}$ of a three-state quantum system with a train of $N$ pairs of resonant and coincident pump and Stokes pulses is introduced. A simple analytic formula is derived for the ratios of the pulse amplitudes in each pair for which the maximum transient population $P_2(t)$ of the middle state $\\ket{2}$ is minimized, $P_2^{\\max}=\\sin^2(\\pi/4N)$. It is remarkable that, even though the pulses are on exact resonance, $P_2(t)$ is damped to negligibly small values even for a small number of pulse pairs. The population dynamics resembles generalized $\\pi$-pulses for small $N$ and stimulated Raman adiabatic passage for large $N$ and therefore this technique can be viewed as a bridge between these well-known techniques.

Andon A. Rangelov; Nikolay V. Vitanov

2012-01-04T23:59:59.000Z

407

Propagation of an arbitrary vortex pair through an astigmatic optical system and determination of its net topological charge  

E-Print Network (OSTI)

We embed a pair of vortices with different topological charges in a Gaussian beam and study its evolution through an astigmatic optical system, a tilted lens. The propagation dynamics is explained by a closed-form analytical expression. Furthermore, we show that a careful examination of the intensity distribution at a predicted position past the lens can provide us with the net charge present in the beam. To the best of our knowledge, our method is the first non-interferometric technique to measure the net charge of an arbitrary vortex pair. Our experimental results are in close agreement with the theoretical predictions.

Reddy, Salla Gangi; Aadhi, A; Banerji, J; Singh, R P

2013-01-01T23:59:59.000Z

408

Korteweg de Vries Burgers equation in multi-ion and pair-ion plasmas with Lorentzian electrons  

SciTech Connect

Korteweg de Vries Burgers equation for multi-ion and pair-ion plasmas has been derived using reductive perturbation technique. The kinematic viscosities of both positive and negative ions are taken into account. Generalized Lorentzian distribution is assumed for the electron component, accounting for deviation from Maxwellian equilibrium, parametrized via a real parameter {kappa}. The modification in the strength of shock structure is presented. A comprehensive comparison between the profiles of shock wave structure in multi-ion and pair-ion plasmas, (for the Maxwellian electrons to Lorentzian electrons), is discussed.

Hussain, S.; Akhtar, N. [Theoretical Plasma Physics Division (TPPD), PINSTECH, P. O. Nilore, Islamabad 44000 (Pakistan); Department of Physics and Applied Mathematics (DPAM) PIEAS, P. O. Nilore, Islamabad 44000 (Pakistan)

2013-01-15T23:59:59.000Z

409

The computation of cloud base height from paired whole-sky imaging cameras  

SciTech Connect

A major goal for global change studies is to improve the accuracy of general circulation models (GCMs) capable of predicting the timing and magnitude of greenhouse gas-induced global warming. Research has shown that cloud radiative feedback is the single most important effect determining the magnitude of possible climate responses to human activity. Of particular value to reducing the uncertainties associated with cloud-radiation interactions is the measurement of cloud base height (CBH), both because it is a dominant factor in determining the infrared radiative properties of clouds with respect to the earth`s surface and lower atmosphere and because CBHs are essential to measuring cloud cover fraction. We have developed a novel approach to the extraction of cloud base height from pairs of whole sky imaging (WSI) cameras. The core problem is to spatially register cloud fields from widely separated WSI cameras; this complete, triangulation provides the CBH measurements. The wide camera separation (necessary to cover the desired observation area) and the self-similarity of clouds defeats all standard matching algorithms when applied to static views of the sky. To address this, our approach is based on optical flow methods that exploit the fact that modern WSIs provide sequences of images. We will describe the algorithm and present its performance as evaluated both on real data validated by ceilometer measurements and on a variety of simulated cases.

Allmen, M.C.; Kegelmeyer, W.P. Jr.

1994-03-01T23:59:59.000Z

410

Massive black hole pairs in clumpy, self-gravitating circumnuclear disks: stochastic orbital decay  

E-Print Network (OSTI)

We study the dynamics of massive black hole pairs in clumpy gaseous circumnuclear disks. We track the orbital decay of the light, secondary black hole M_{\\bullet2} orbiting around the more massive primary at the center of the disk, using N-body/SPH simulations. We find that the gravitational interaction of M_{\\bullet2} with massive clumps M_cl erratically perturbs the otherwise smooth orbital decay. In close encounters with massive clumps, gravitational slingshots can kick the secondary black hole out of the disk plane. The black hole moving on an inclined orbit then experiences the weaker dynamical friction of the stellar background, resulting in a longer orbital decay timescale. Interactions between clumps can also favor orbital decay when the black hole is captured by a massive clump which is segregating toward the center of the disk. The stochastic behavior of the black hole orbit emerges mainly when the ratio M_{\\bullet2}/M_cl falls below unity, with decay timescales ranging from ~1 to ~50 Myr. This sugg...

Colpi, Monica

2013-01-01T23:59:59.000Z

411

Optimising the use of detector arrays for measuring intensity correlations of photon pairs  

E-Print Network (OSTI)

Intensity correlation measurements form the basis of many experiments based on spontaneous parametric down-conversion. In the most common situation, two single-photon avalanche diodes and coincidence electronics are used in the detection of the photon pairs, and the coincidence count distributions are measured by making use of some scanning procedure. Here we analyse the measurement of intensity correlations using multi-element detector arrays. By considering the detector parameters such as the detection and noise probabilities, we found that the mean number of detected photons that maximises the visibility of the two photon correlations is approximately equal to the mean number of noise events in the detector array. We provide expressions predicting the strength of the measured intensity correlations as a function of the detector parameters and on the mean number of detected photons. We experimentally test our predictions by measuring far-field intensity correlations of spontaneous parametric down-conversion with an electron multiplying CCD camera, finding excellent agreement with the theoretical analysis.

Daniel S. Tasca; Matthew P. Edgar; Frauke Izdebski; Gerald S. Buller; Miles J. Padgett

2013-05-29T23:59:59.000Z

412

Particle energization in 3D magnetic reconnection of relativistic pair plasmas  

Science Conference Proceedings (OSTI)

We present large scale 3D particle-in-cell simulations to examine particle energization in magnetic reconnection of relativistic electron-positron (pair) plasmas. The initial configuration is set up as a relativistic Harris equilibrium without a guide field. These simulations are large enough to accommodate a sufficient number of tearing and kink modes. Contrary to the non-relativistic limit, the linear tearing instability is faster than the linear kink instability, at least in our specific parameters. We find that the magnetic energy dissipation is first facilitated by the tearing instability and followed by the secondary kink instability. Particles are mostly energized inside the magnetic islands during the tearing stage due to the spatially varying electric fields produced by the outflows from reconnection. Secondary kink instability leads to additional particle acceleration. Accelerated particles are, however, observed to be thermalized quickly. The large amplitude of the vertical magnetic field resulting from the tearing modes by the secondary kink modes further help thermalizing the non-thermal particles generated from the secondary kink instability. Implications of these results for astrophysics are briefly discussed.

Liu Wei; Yin Lin; Albright, B. J.; Bowers, K. J. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Liang, Edison P. [Department of Physics and Astronomy, Rice University, Houston, Texas 77005 (United States); Li Hui

2011-05-15T23:59:59.000Z

413

Howe pairs, supersymmetry, and ratios of random characteristic polynomials for the unitary groups U(N)  

E-Print Network (OSTI)

For the classical compact Lie groups K = U(N) the autocorrelation functions of ratios of random characteristic polynomials are studied. Basic to our treatment is a property shared by the spinor representation of the spin group with the Shale-Weil representation of the metaplectic group: in both cases the character is the analytic square root of a determinant or the reciprocal thereof. By combining this fact with Howe's theory of supersymmetric dual pairs (g,K), we express the K-Haar average product of p ratios of characteristic polynomials and q conjugate ratios as a character which is associated with an irreducible representation of the Lie superalgebra g = gl(n|n) for n = p+q. This primitive character is shown to extend to an analytic radial section of a real supermanifold related to gl(n|n), and is computed by invoking Berezin's description of the radial parts of Laplace-Casimir operators for gl(n|n). The final result for the character looks like a natural transcription of the Weyl character formula to the context of highest-weight representations of Lie supergroups. While several other works have recently reproduced our results in the stable range where N is no less than max(p,q), the present approach covers the full range of matrix dimensions N. To make this paper accessible to the non-expert reader, we have included a chapter containing the required background material from superanalysis.

J. B. Conrey; D. W. Farmer; M. R. Zirnbauer

2005-11-06T23:59:59.000Z

414

Modeling intermolecular interactions of physisorbed organic molecules using pair potential calculations  

Science Conference Proceedings (OSTI)

The understanding and control of epitaxial growth of organic thin films is of crucial importance in order to optimize the performance of future electronic devices. In particular, the start of the submonolayer growth plays an important role since it often determines the structure of the first layer and subsequently of the entire molecular film. We have investigated the structure formation of 3,4,9,10-perylene-tetracarboxylic dianhydride and copper-phthalocyanine molecules on Au(111) using pair-potential calculations based on van der Waals and electrostatic intermolecular interactions. The results are compared with the fundamental lateral structures known from experiment and an excellent agreement was found for these weakly interacting systems. Furthermore, the calculations are even suitable for chemisorptive adsorption as demonstrated for copper-phthalocyanine/Cu(111), if the influence of charge transfer between substrate and molecules is known and the corresponding charge redistribution in the molecules can be estimated. The calculations are of general applicability for molecular adsorbate systems which are dominated by electrostatic and van der Waals interaction.

Kroeger, Ingo; Stadtmueller, Benjamin; Wagner, Christian; Weiss, Christian; Temirov, Ruslan; Tautz, F. Stefan; Kumpf, Christian [Peter Gruenberg Institut (PGI-3), Forschungszentrum Juelich, 52425 Juelich (Germany); Juelich-Aachen Research Alliance (JARA) - Fundamentals of Future Information Technology, 52425 Juelich (Germany)

2011-12-21T23:59:59.000Z

415

Radical-pair model of magnetoreception with spin-orbit coupling  

E-Print Network (OSTI)

The mechanism used by migratory birds to orientate themselves using the geomagnetic field is still a mystery in many species. The radical pair mechanism, in which very weak magnetic fields can influence certain types of spin-dependent chemical reactions, leading to biologically observable signals, has recently imposed itself as one of the most promising candidates for certain species. This is thanks both to its extreme sensitivity and its capacity to reproduce results from behavioral studies. Still, in order to gain a directional sensitivity, an anisotropic mechanism is needed. Recent proposals have explored the possibility that such an anisotropy is due to the electron-nucleus hyperfine interaction. In this work we explore a different possibility, in which the anisotropy is due to spin-orbit coupling between the electron spin and its angular momentum. We will show how a spin-orbit-coupling-based magnetic compass can have performances comparable with the usually-studied nuclear-hyperfine based mechanism. Our results could thus help researchers actively looking for candidate biological molecules which may host magnetoreceptive functions, both to describe magnetoreception in birds as well as to develop artificial chemical compass systems.

Neill Lambert; Simone De Liberato; Clive Emary; Franco Nori

2013-09-17T23:59:59.000Z

416

Enhanced selectivity and efficiency of coherent population transfer via a train of pulse pairs  

SciTech Connect

We propose a way to significantly enhance selectivity and efficiency of coherent population transfer in a {Lambda}-type four-level system with a closely spaced doublet in the final state by using a train of counterintuitively ordered pump-Stokes pulse pairs. Due to temporal constructive and destructive quantum interference between the sequential transitions and subsequent coherent accumulation and annihilation in the time domain, the spectral resolution of selective and perfect population transfer to either of the final states can be improved by more than one order of magnitude as compared to the conventionally widely used stimulated Raman adiabatic passage and chirped adiabatic passage techniques, which can also be well understood as a result of the formation of a comblike structure of the pulse train spectrum in the frequency domain. Moreover, an arbitrary coherent superposition between the closely separated doublet can be achieved by suitably tuning the repetition period and detuning of the laser fields. This method has potential applications in control of chemical reactions and quantum information processing.

Yang Xihua [Department of Physics, Shanghai University, Shanghai 200444 (China); Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701 (United States); Zhang Zhenhua; Yan Xiaona; Li Chunfang [Department of Physics, Shanghai University, Shanghai 200444 (China)

2010-09-15T23:59:59.000Z

417

Gas Dynamics and Star Formation in the Galaxy Pair NGC1512/1510  

E-Print Network (OSTI)

(abridged) Here we present HI line and 20-cm radio continuum data of the nearby galaxy pair NGC1512/1510 as obtained with the Australia Telescope Compact Array. These are complemented by GALEX UV-, SINGG Halpha- and Spitzer mid-infrared images, allowing us to compare the distribution and kinematics of the neutral atomic gas with the locations and ages of the stellar clusters within the system. For the barred, double-ring galaxy NGC1512 we find a very large HI disk, about 4x its optical diameter, with two pronounced spiral/tidal arms. Both its gas distribution and the distribution of the star-forming regions are affected by gravitational interaction with the neighbouring blue compact dwarf galaxy NGC1510. The two most distant HI clumps, at radii of about 80 kpc, show signs of star formation and are likely tidal dwarf galaxies. Star formation in the outer disk of NGC1512 is revealed by deep optical- and two-color ultraviolet images. Using the latter we determine the properties of about 200 stellar clusters and ...

Koribalski, Baerbel S

2009-01-01T23:59:59.000Z

418

High pressure pair distribution function studies of Green River oil shale.  

Science Conference Proceedings (OSTI)

The compression behavior of a silicate-rich oil shale from the Green River formation in the pressure range 0.0-2.4 GPa was studied using in situ high pressure X-ray pair distribution function (PDF) measurements for the sample contained within a Paris-Edinburgh cell. The real-space local structural information in the PDF, G(r), was used to evaluate the compressibility of the oil shale. Specifically, the pressure-induced reduction in the medium- to long-range atom distances ({approx}6-20 {angstrom}) yielded an average sample compressibility corresponding to a bulk modulus of ca. 61-67 GPa. A structural model consisting of a three phase mixture of the principal crystalline oil shale components (quartz, albite and Illite) provided a good fit to the ambient pressure PDF data (R {approx} 30.7%). Indeed the features in the PDF beyond {approx} {angstrom}, were similarly well fit by a single phase model of the highest symmetry, highly crystalline quartz component. The factors influencing the observed compression behavior are discussed.

Chapman, K. W.; Chupas, P. J.; Locke, D. R.; Winans, R. E.; Pugmire, R. J.; Univ. of Utah

2008-01-01T23:59:59.000Z

419

A search for z boson pair production at the Fermilab Tevatron Collider  

SciTech Connect

This dissertation describes a search for Z/{gamma}* boson pair production decaying into {mu}{mu}{mu}{mu}, {mu}{mu}ee, and eeee final states with approximately 1 fb{sup -1} of data at the Fermilab Tevatron Collider at {radical}s = 1.96 TeV. The small cross section times branching ratio for each channel mandated a thorough study of the acceptance and efficiencies. After optimization, 1.7 {+-} 0.1 events are expected for Standard Model production with a background of 0.13 {+-} 0.03 events. One event was found in the {mu}{mu}ee channel. A cross section limit of 4.4 pb is determined at a 95% confidence level for Standard Model production. Additionally, one parameter and two parameter 95% C.L. limits are found for the anomalous neutral trilinear gauge couplings ZZZ* and ZZ{gamma}*. The one parameter 95% C.L. coupling limits with a form factor scale of 1.2 TeV are: -0.28 < f{sub 40}{sup Z} < 0.28, -0.31 < f{sub 50}{sup Z} < 0.29, -0.26 < f{sub 40}{gamma} < 0.26, and -0.30 < f{sub 50}{sup {gamma}} < 0.28.

Jarvis, Chad Ryan; /Maryland U.

2007-10-01T23:59:59.000Z

420

Winding numbers and scaling tilts from random vortex-antivortex pairs  

E-Print Network (OSTI)

I show that random distributions of vortex-antivortex pairs (rather than of individual vortices) lead to scaling of typical winding numbers W trapped inside a loop of circumference C with the square root of C when the expected winding numbers are large. Such scaling is consistent with the Kibble-Zurek mechanism (KZM). By contrast, distribution of individual vortices with randomly assigned topological charges would result in the dispersion of W scaling with the square root of the area inside C. Scaling of the dispersion of W and of the probability of detection of non-zero W with C can be also studied for loops so small that non-zero windings are rare. In this case I show a doubling of the scaling of dispersion with C when compared to the scaling of dispersion in the large W regime. Moreover, probability of trapping of a non-zero W becomes, in this case, proportional to the area subtended by C (hence, to the square of circumference). This quadruples, as compared with large winding numbers regime, the exponent in the power law dependence of the frequency of trapping of W=+1 or W=-1 on C. Such change of the power law exponent by a FACTOR OF FOUR implies quadrupling of the scaling of the frequency of winding number trapping with the quench rate, and is of key importance for experimental tests of KZM.

Wojciech H. Zurek

2013-05-21T23:59:59.000Z

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421

Nyquist-Shannon sampling theorem applied to refinements of the atomic pair distribution function  

Science Conference Proceedings (OSTI)

We have systematically studied the optimal real-space sampling of atomic pair distribution (PDF) data by comparing refinement results from oversampled and resampled data. Based on nickel and a complex perovskite system, we show that not only is the optimal sampling bounded by the Nyquist interval described by the Nyquist-Shannon (NS) sampling theorem as expected, but near this sampling interval, the data points in the PDF are minimally correlated, which results in more reliable uncertainty estimates in the modeling. Surprisingly, we find that PDF refinements quickly become unstable for data on coarser grids. Although the Nyquist-Shannon sampling theorem is well known, it has not been applied to PDF refinements, despite the growing popularity of the PDF method and its adoption in a growing number of communities. Here, we give explicit expressions for the application of NS sampling theorem to the PDF case, and establish through modeling that it is working in practice, which lays the groundwork for this to become more widely adopted. This has implications for the speed and complexity of possible refinements that can be carried out many times faster than currently with no loss of information, and it establishes a theoretically sound limit on the amount of information contained in the PDF that will prevent over-parametrization during modeling.

Farrow, Christopher L.; Shaw, Margaret; Kim, Hyunjeong; Juhs, Pavol; Billinge, Simon J.L. (NIAIST); (Columbia); (Princeton)

2011-12-07T23:59:59.000Z

422

Search for pair production of the scalar top quark in muon plus tau final states  

SciTech Connect

We present a search for the pair production of scalar top quarks ({tilde t}{sub 1}), the lightest supersymmetric partners of the top quarks, in p{bar p} collisions at a center-of-mass energy of 1.96 TeV, using data corresponding to an integrated luminosity of 7.3 fb{sup -1} collected with the D0 experiment at the Fermilab Tevatron Collider. Each scalar top quark is assumed to decay into a b quark, a charged lepton, and a scalar neutrino ({tilde {nu}}). We investigate final states arising from {tilde t}{sub 1}{ovr {tilde t}{sub 1}} {yields} b{bar b}{mu}{tau}{tilde {nu}}{tilde {nu}} and {tilde t}{sub 1}{ovr {tilde t}{sub 1}} {yields} b{bar b}{tau}{tau}{tilde {nu}}{tilde {nu}}. With no significant excess of events observed above the background expected from the standard model, we set exclusion limits on this production process in the (M{sub {tilde t}{sub 1}}, M{sub {tilde {nu}}}) plane.

Abazov V. M.; Abbott B.; Acharya B. S.; Adams M.; Adams T.; Alexeev G. D.; Alkhazov G.; Alton A.; Alverson G.; Aoki M.; Askew A.; Asman B.; Atkins S.; Atramentov O.; Augsten K.; Avila C.; BackusMayes J.; Badaud F.; Bagby L.; Baldin B.; Bandurin D. V.; Banerjee S.; Barberis E.; Baringer P.; Barreto J.; Bartlett J. F.; Bassler U.; Bazterra V.; Bean A.; Begalli M.; Belanger-Champagne C.; Bellantoni L.; Beri S. B.; Bernardi G.; Bernhard R.; Bertram I.; Besancon M.; Beuselinck R.; Bezzubov V. A.; Bhat P. C.; Bhatia S.; Bhatnagar V.; Blazey G.; Blessing S.; Bloom K.; Boehnlein A.; Boline D.; Boos E. E.; Borissov G.; Bose T.; Brandt A.; Brandt O.; Brock R.; Brooijmans G.; Bross A.; Brown D.; Brown J.; Bu X. B.; Buehler M.; Buescher V.; Bunichev V.; Burdin S.; Burnett T. H.; Buszello C. P.; Calpas B.; Camacho-Perez E.; Carrasco-Lizarraga M. A.; Casey B. C. K.; Castilla-Valdez H.; Chakrabarti S.; Chakraborty D.; Chan K. M.; Chandra A.; Chapon E.; Chen G.; Chevalier-Thery S.; Cho D. K.; Cho S. W.; Choi S.; Choudhary B.; Cihangir S.; Claes D.; Clutter J.; Cooke M.; Cooper W. E.; Corcoran M.; Couderc F.; Cousinou M. -C.; Croc A.; Cutts D.; Das A.; Davies G.; de Jong S. J.; De La Cruz-Burelo E.; Deliot F.; Demina R.; Denisov D.; Denisov S. P.; Desai S.; Deterre C.; DeVaughan K.; Diehl H. T.; Diesburg M.; Ding P. F.; Dominguez A.; Dorland T.; Dubey A.; Dudko L. V.; Duggan D.; Duperrin A.; Dutt S.; Dyshkant A.; Eads M.; Edmunds D.; Ellison J.; Elvira V. D.; Enari Y.; Evans H.; Evdokimov A.; Evdokimov V. N.; Facini G.; Ferbel T.; Fiedler F.; Filthaut F.; Fisher W.; Fisk H. E.; Fortner M.; Fox H.; Fuess S.; Garcia-Bellido A.; Garcia-Guerra G. A.; Gavrilov V.; Gay P.; Geng W.; Gerbaudo D.; Gerber C. E.; Gershtein Y.; Ginther G.; Golovanov G.; Goussiou A.; Grannis P. D.; Greder S.; Greenlee H.; Greenwood Z. D.; Gregores E. M.; Grenier G.; Gris Ph.; Grivaz J. -F.; Grohsjean A.; Gruenendahl S.; Gruenewald M. W.; Guillemin T.; Gutierrez G.; Gutierrez P.; Haas A.; Hagopian S.; Haley J.; Han L.; Harder K.; Harel A.; Hauptman J. M.; Hays J.; Head T.; Hebbeker T.; Hedin D.; Hegab H.; Heinson A. P.; Heintz U.; Hensel C.; Heredia-De La Cruz I.; Herner K.; Hesketh G.; Hildreth M. D.; Hirosky R.; Hoang T.; Hobbs J. D.; Hoeneisen B.; Hohlfeld M.; Hubacek Z.; Hynek V.; Iashvili I.; Ilchenko Y.; Illingworth R.; Ito A. S.; Jabeen S.; Jaffre M.; Jamin D.; Jayasinghe A.; Jesik R.; Johns K.; Johnson M.; Jonckheere A.; Jonsson P.; Joshi J.; Jung A. W.; Juste A.; Kaadze K.; Kajfasz E.; Karmanov D.; Kasper P. A.; Katsanos I.; Kehoe R.; Kermiche S.; Khalatyan N.; Khanov A.; Kharchilava A.; Kharzheev Y. N.; Kohli J. M.; Kozelov A. V.; Kraus J.; Kulikov S.; Kumar A.; Kupco A.; Kurca T.; Kuzmin V. A.; Lammers S.; Landsberg G.; Lebrun P.; Lee H. S.; Lee S. W.; Lee W. M.; Lellouch J.; Li H.; Li L.; Li Q. Z.; Lietti S. M.; Lim J. K.; Lincoln D.; Linnemann J.; Lipaev V. V.; Lipton R.; Liu Y.; Lobodenko A.; Lokajicek M.; Lopes de Sa R.; Lubatti H. J.; Luna-Garcia R.; Lyon A. L.; Maciel A. K. A.; Mackin D.; Madar R.; Magana-Villalba R.; Malik S.; Malyshev V. L.; Maravin Y.; Martinez-Ortega J.; McCarthy R.; McGivern C. L.; Meijer M. M.; Melnitchouk A.; Menezes D.; Mercadante P. G.; Merkin M.; et al.

2012-04-20T23:59:59.000Z

423

On the Analysis of Locative Phrases with Graphs and Lexicon-Grammar: The Classifier/Proper Noun Pairing  

Science Conference Proceedings (OSTI)

This paper analyses French locative prepositional phrases containing a location proper name Npr (e.g. Mditerrane) and its associated classifier Nc (e.g. mer). The (Nc, Npr) pairs are formally described with the aid of elementary sentences. We study ...

Matthieu Constant

2002-06-01T23:59:59.000Z

424

The probability distribution of the number of electron-positron pairs produced in a uniform electric field  

E-Print Network (OSTI)

The probability-generating function of the number of electron-positron pairs produced in a uniform electric field is constructed. The mean and variance of the numbers of pairs are calculated, and analytical expressions for the probability of low numbers of electron-positron pairs are given. A recursive formula is derived for evaluating the probability of any number of pairs. In electric fields of supercritical strength |eE| > \\pi m^2/ \\ln 2, where e is the electron charge, E is the electric field, and m is the electron mass, a branch-point singularity of the probability-generating function penetrates the unit circle |z| = 1, which leads to the asymptotic divergence of the cumulative probability. This divergence indicates a failure of the continuum limit approximation. In the continuum limit and for any field strength, the positive definiteness of the probability is violated in the tail of the distribution. Analyticity, convergence, and positive definiteness are restored upon the summation over discrete levels of electrons in the normalization volume. Numerical examples illustrating the field strength dependence of the asymptotic behavior of the probability distribution are presented.

M. I. Krivoruchenko

2012-06-18T23:59:59.000Z

425

On the non-linearity of the master equation describing spin-selective radical-ion-pair reactions  

E-Print Network (OSTI)

We elaborate on the physical meaning of the non-linear master equation that was recently derived to account for spin-selective radical-ion-pair reactions. Based on quite general arguments, we show that such a non-linear master equation is indeed to be expected.

Kominis, I K

2010-01-01T23:59:59.000Z

426

Pair production of Higgs bosons associated with $Z$ boson in the left-right twin Higgs model at the ILC  

E-Print Network (OSTI)

The left-right twin Higgs(LRTH) model predicts the existence of three additional Higgs bosons: one neutral Higgs $\\phi^{0}$ and a pair of charged Higgs bosons $\\phi^{\\pm}$. In this paper, we studied the production of a pair of charged and neutral Higgs bosons associated with standard model gauge boson $Z$ at the ILC, i.e., $e^{+}e^{-}\\rightarrow Z\\phi^{+}\\phi^{-}$ and $e^{+}e^{-}\\rightarrow Z\\phi^{0}\\phi^{0}$. We calculate the production rate and present the distributions of the various observables, such as, the distributions of the energy and the transverse momenta of final $Z$-boson and charged Higgs boson $\\phi^{-}$, the differential cross section of the invariant mass of charged Higgs bosons pair, the distribution of the angle between charged Higgs bosons pair and the production angle distributions of $Z$-boson and charged Higgs boson $\\phi^{-}$. Our numerical results show that, for the process $e^{+}e^{-}\\rightarrow Z\\phi^{+}\\phi^{-}$, the production rates are at the level of $10^{-1} fb$ with reasonable parameter values. For the process of $e^{+}e^{-}\\rightarrow Z\\phi^{0}\\phi^{0}$, we find that the production cross section are smaller than $6\\times 10^{-3} fb$ in most of parameter space. However, the resonance production cross section can be significantly enhanced.

Yao-Bei Liu; Xue-Lei Wang

2010-06-23T23:59:59.000Z

427

Relativistic Winds from Compact Gamma-Ray Sources: II. Pair Loading and Radiative Acceleration in Gamma-ray Bursts  

E-Print Network (OSTI)

We consider the effects of rapid pair creation by an intense pulse of gamma-rays propagating ahead of a relativistic shock. Side-scattered photons colliding with the main gamma-ray beam amplify the density of scattering charges. The acceleration rate of the pair-loaded medium is calculated, and its limiting bulk Lorentz factor related to the spectrum and compactness of the photon source. One obtains, as a result, a definite prediction for the relative inertia in baryons and pairs. The deceleration of a relativistic shock in the moving medium, and the resulting synchrotron emissivity, are compared with existing calculations for a static medium. The radiative efficiency is increased dramatically by pair loading. When the initial ambient density exceeds a critical value, the scattering depth traversed by the main gamma-ray pulse rises above unity, and the pulse is broadened. These considerations place significant constraints on burst progenitors: a pre-burst mass loss rate exceeding 10^{-5} M_\\odot per year is difficult to reconcile with individual pulses narrower than 10 s, unless the radiative efficiency is low. An anisotropic gamma-ray flux (on an angular scale \\Gamma^{-1} or larger) drives a large velocity shear that greatly increases the energy in the seed magnetic field forward of the propagating shock.

Christopher Thompson; Piero Madau

1999-09-06T23:59:59.000Z

428

Measurements of the top quark pair production cross section and an estimate of the D0 silicon detector lifetime  

SciTech Connect

This thesis presents two measurements of the top quark pair production cross section at {radical}s = 1:96 TeV using data from the D0 experiment. Both measurements are performed in the dilepton final state and make use of secondary vertex b-tagging.

Strandberg, Sara; /Stockholm U.

2007-03-01T23:59:59.000Z

429

814revision:2003-09-26modified:2003-09-29 ON THE COGENERATION OF COTORSION PAIRS  

E-Print Network (OSTI)

814revision:2003-09-26modified:2003-09-29 ON THE COGENERATION OF COTORSION PAIRS PAUL C. EKLOF modules, then C is cogenerated by a set. We show that () is the best result provable in ZFC in case R has a countable spectrum: the Uniformization Principle UP+ implies that C is not cogenerated by a set whenever C

Shelah, Saharon

430

Constraints on large-extra-dimensions model through 125 GeV Higgs pair production at the LHC  

E-Print Network (OSTI)

Based on the analysis of 5 fb^-1 of data at the LHC, the ATLAS and CMS collaborations have presented evidence for a Higgs boson with a mass in the 125 GeV range. We consider the 125 GeV neutral Higgs pair production process in the context of large-extra-dimensions (LED) model including the Kaluza-Klein (KK)excited gravitons at the LHC. We consider the standard model(SM) Higgs pair production in gluon-gluon fusion channel and pure LED effects through graviton exchange as well as their interferences. It is shown that such interferences should be included; the LED model raises the transverse momentum (Pt)and invariant mass (M_HH) distributions at high scales of Pt and M_HH of the Higgs pair production. By using the Higgs pair production we could set the discovery limit on the cutoff scale M_S up to 6 TeV for delta = 2 and 4.5 TeV for delta = 6.

Hao Sun; Ya-Jin Zhou; He Chen

2012-11-22T23:59:59.000Z

431

The pair production of Charged and Neutral Higgs bosons in W and Z gauge boson fusion process  

E-Print Network (OSTI)

We study the signatures of a two Higgs doublet model of Davidson and Logan. The model includes an extra Higgs doublet with the vacuum expectation value (VEV) much smaller than the one of the standard model like Higgs. The smaller VEV is related to the origin of the small neutrino mass in the two Higgs doublet model. In the model, a single non-standard model like Higgs production of weak gauge boson fusion is suppressed due to the smallness of the vacuum expectation value. In contrast to the single Higgs production, the cross section of the Higgs pair production due to gauge boson fusion is not suppressed. Using the model, we compute the charged Higgs and neutral Higgs pair production cross section in W Z annihilation channel. In the two Higgs doublet model, the charged Higgs H^+ decays into a pair of the charged anti-lepton and right-handed neutrino. The neutral Higgs boson decays into right-handed neutrino and left-handed anti-neutrino pair which is invisible. A single charged anti-lepton and three neutrinos are the products of the subsequent decays of the charged Higgs and the neutral Higgs. W Z pair production gives the background for the signal through the decays W^+ ->nu l^+ and Z -> nu nubar. By multiplying the charged and neutral Higgses production cross section with the lepton flavor specific decay branching fractions of charged Higgs, we define a measurement which characterizes the present model. We numerically compute the measurement and find the sizable deviation from the standard model prediction.

Takuya Morozumi; Kotaro Tamai

2012-12-10T23:59:59.000Z

432

Neutrino-pair emission from nuclear de-excitation in core-collapse supernova simulations  

E-Print Network (OSTI)

We study the impact of neutrino-pair production from the de-excitation of highly excited heavy nuclei on core-collapse supernova simulations, following the evolution up to several 100 ms after core bounce. Our study is based on the AGILE-Boltztran supernova code, which features general relativistic radiation hydrodynamics and accurate three-flavor Boltzmann neutrino transport in spherical symmetry. In our simulations the nuclear de-excitation process is described in two different ways. At first we follow the approach proposed by Fuller and Meyer [Astrophys. J. 376,701 (1991)], which is based on strength functions derived in the framework of the nuclear Fermi-gas model of non-interacting nucleons. Secondly, we parametrize the allowed and forbidden strength distributions in accordance with measurements for selected nuclear ground states. We determine the de-excitation strength by applying the Brink hypothesis and detailed balance. For both approaches, we find that nuclear de-excitation has no effect on the supernova dynamics. However, we find that nuclear de-excitation is the leading source for the production of electron antineutrinos as well as heavy-lepton flavor (anti)neutrinos during the collapse phase. At sufficiently high densities, the associated neutrino spectra are influenced by interactions with the surrounding matter, making proper simulations of neutrino transport important for the determination of the neutrino-energy loss rate. We find that even including nuclear de-excitations, the energy loss during the collapse phase is overwhelmingly dominated by electron neutrinos produced by electron captures.

Tobias Fischer; Karlheinz Langanke; Gabriel Martinez-Pinedo

2013-09-17T23:59:59.000Z

433

int. j. prod. res., 2001, vol. 39, no. 14, 3085 3107 Sequence-dependent batch chemical scheduling with earliness and  

E-Print Network (OSTI)

analysis. Journal of Public Transportation, 10 (2), 1-16. Barnum, D. T., Tandon, S. and McNeil, S. (2007c

Dessouky, Maged

434

A comparative analysis of Painlev, Lax Pair, and Similarity Transformation methods in obtaining the integrability conditions of nonlinear Schrdinger equations  

E-Print Network (OSTI)

We derive the integrability conditions of nonautonomous nonlinear Schr$\\rm\\ddot o$dinger equations using the Lax Pair and Similarity Transformation methods. We present a comparative analysis of these integrability conditions with those of the Painlev$\\rm\\acute{e}$ method. We show that while the Painlev$\\rm\\acute{e}$ integrability conditions restrict the dispersion, nonlinearity, and dissipation/gain coefficients to be space-independent and the external potential to be only a quadratic function of position, the Lax Pair and the Similarity Transformation methods allow for space-dependent coefficients and an external potential that is not restricted to the quadratic form. The integrability conditions of the Painlev$\\rm\\acute{e}$ method are retrieved as a special case of our general integrability conditions. We also derive the integrability conditions of nonautonomous nonlinear Schr$\\rm\\ddot o$dinger equations for two- and three-spacial dimensions.

U. Al Khawaja

2010-04-18T23:59:59.000Z

435

Fibre Distributed Data Interface (FDDI) Token Ring Twisted Pair Physical Layer Medium Dependent (TP-PMD) Secretariat  

E-Print Network (OSTI)

The described Twisted Pair Physical Layer Medium Dependent Standard is intended for use in a high-performance multistation network. This protocol is designed to be effective at 100 megabits per second using a token ring architecture and twisted pair cabling as the transmission medium over link distances of up to one hundred meters. American National Standard Approval of an American National Standard requires review by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their

unknown authors

1995-01-01T23:59:59.000Z

436

Neutrino and Electron-positron Pair Emission from Phase-induced Collapse of Neutron Stars to Quark Stars  

E-Print Network (OSTI)

We study the energy released from phase-transition induced collapse of neutron stars, which results in large amplitude stellar oscillations. To model this process we use a Newtonian hydrodynamic code, with a high resolution shock-capturing scheme. The physical process considered is a sudden phase transition from normal nuclear matter to a mixed phase of quark and nuclear matter. We show that both the temperature and the density at the neutrinosphere oscillate with time. However, they are nearly 180 degree out of phase. Consequently, extremely intense, pulsating neutrino/antineutrino and leptonic pair fluxes will be emitted. During this stage several mass ejecta can be ejected from the stellar surface by the neutrinos and antineutrinos. These ejecta can be further accelerated to relativistic speeds by the electron/positron pairs, created by the neutrino and antineutrino annihilation outside the stellar surface. We suggest that this process may be a possible mechanism for short Gamma-Ray Bursts.

Cheng, K S

2010-01-01T23:59:59.000Z

437

Is a rubidium cell with long decay time always useful for generating a non-classical photon pair?  

E-Print Network (OSTI)

We experimentally find an interesting and unexpected thing: a rubidium cell with long decay time can not be used to generate a non-classical correlated photon pair via the D2 transition of $^{87}$Rb using four-wave mixing configuration [Opt. Express {\\bf 16}, 21708 (2008)]. In this work, we give a detail theoretical analysis on the EIT of hot $^{87}$Rb with different ground decay time, which shows a probable reason why a rubidium cell with long decay time is not a useful candidate for preparation of a non-classical photon pair via the D2 transition. The simulations agree well with the experimental results. We believe our find is very instructive to such kind of research.

Qun-Feng Chen; Xiao-Song Lu; Bao-Sen Shi; Guang-Can Guo

2008-12-19T23:59:59.000Z

438

Is a rubidium cell with long decay time always useful for generating a non-classical photon pair?  

E-Print Network (OSTI)

We experimentally find an interesting and unexpected thing: a rubidium cell with long decay time can not be used to generate a non-classical correlated photon pair via the D2 transition of $^{87}$Rb using four-wave mixing configuration [Opt. Express {\\bf 16}, 21708 (2008)]. In this work, we give a detail theoretical analysis on the EIT of hot $^{87}$Rb with different ground decay time, which shows a probable reason why a rubidium cell with long decay time is not a useful candidate for preparation of a non-classical photon pair via the D2 transition. The simulations agree well with the experimental results. We believe our find is very instructive to such kind of research.

Chen, Qun-Feng; Shi, Bao-Sen; Guo, Guang-Can

2008-01-01T23:59:59.000Z

439

Study on the top quark pair production mechanism in 1.96 TeV proton-antiproton collisions  

SciTech Connect

The study of the top quark pair production mechanism in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV is described. The main subjects are the measurements of the top quark pair production cross section, the top quark mass and a search for a new particle decaying to the top quark pair. The analyses are based on 1.9 fb{sup -1} of data collected by the Collider Detector at Fermilab (CDF) Run II experiment between March 2002 and May 2007, using the lepton+jets events. The measured top quark pair production cross section is 8.2 {+-} 0.5 (stat.) {+-} 0.8 (syst.) {+-} 0.5 (lum.) pb, which is slightly higher than the standard model prediction at the top mass of 175 GeV/c{sup 2}. The top quark mass is an important parameter in the standard model, and also in the experimental studies. The measured top quark mass if 171.6 {+-} 2.0 (stat.) {+-} 1.3(syst.) GeV/c{sup 2}. Finally, they report on a search for a new gauge boson decaying to t{bar t}, which interferes with the standard model gluon in the q{bar q} {yields} t{bar t} production process. They call such a hypothetical particle a 'Massive Gluon'. The observed t{bar t} invariant mass distribution is consistent with the standard model expectations, and also the measured massive gluon coupling strength with quarks is consistent within a statistical fluctuation of the standard model expectation in the wide range of the massive gluon masses and widths. They set the upper and lower limits on the coupling strength of the massive gluon.

Naganoma, Junji; /Waseda U.

2008-03-01T23:59:59.000Z

440

Two-Loop Leading Color Corrections to Heavy-Quark Pair Production in the Gluon Fusion Channel  

E-Print Network (OSTI)

We evaluate the two-loop QCD diagrams contributing to the leading color coefficient of the heavy-quark pair production cross section in the gluon fusion channel. We obtain an analytic expression, which is valid for any value of the Mandelstam invariants s and t and of the heavy-quark mass m. Our findings agree with previous analytic results in the small-mass limit and with recent results for the coefficients of the IR poles.

R. Bonciani; A. Ferroglia; T. Gehrmann; A. von Manteuffel; C. Studerus

2010-11-30T23:59:59.000Z

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441

Higgs pair production due to a radion resonance in Randall-Sundrum model: prospects at the Large Hadron Collider  

E-Print Network (OSTI)

We consider Higgs pair production at the Large Hadron Collider (LHC) in a Randall-Sundrum scenario containing a radion field. It is shown that the enhanced effective coupling of the radion to gluons, together with contributions from a low-lying radion pole, can provide larger event rates compared to most new physics possibilities considered so far. We present the results for both an intermediate mass Higgs and a heavy Higgs, with a detailed discussion of the background elimination procedure.

Prasanta Kumar Das; Biswarup Mukhopadhyaya

2003-03-16T23:59:59.000Z

442

Study on the top quark pair production mechanism in 1.96 TeV proton-antiproton collisions  

SciTech Connect

The study of the top quark pair production mechanism in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV is described. The main subjects are the measurements of the top quark pair production cross section, the top quark mass and a search for a new particle decaying to the top quark pair. The analyses are based on 1.9 fb{sup -1} of data collected by the Collider Detector at Fermilab (CDF) Run II experiment between March 2002 and May 2007, using the lepton+jets events. The measured top quark pair production cross section is 8.2 {+-} 0.5 (stat.) {+-} 0.8 (syst.) {+-} 0.5 (lum.) pb, which is slightly higher than the standard model prediction at the top mass of 175 GeV/c{sup 2}. The top quark mass is an important parameter in the standard model, and also in the experimental studies. The measured top quark mass if 171.6 {+-} 2.0 (stat.) {+-} 1.3(syst.) GeV/c{sup 2}. Finally, they report on a search for a new gauge boson decaying to t{bar t}, which interferes with the standard model gluon in the q{bar q} {yields} t{bar t} production process. They call such a hypothetical particle a 'Massive Gluon'. The observed t{bar t} invariant mass distribution is consistent with the standard model expectations, and also the measured massive gluon coupling strength with quarks is consistent within a statistical fluctuation of the standard model expectation in the wide range of the massive gluon masses and widths. They set the upper and lower limits on the coupling strength of the massive gluon.

Naganoma, Junji; /Waseda U.

2008-03-01T23:59:59.000Z

443

Generation of polarization entangled photon pairs by a single crystal interferometric source pumped by femtosecond laser pulses  

E-Print Network (OSTI)

Photon pairs, highly entangled in polarization have been generated under femtosecond laser pulse excitation by a type I crystal source, operating in a single arm interferometric scheme. The relevant effects of temporal walk-off existing in these conditions between the ordinary and extraordinary photons were experimentally investigated. By introducing a suitable temporal compensation between the two orthogonal polarization components highly entangled pulsed states were obtained.

M. Barbieri; C. Cinelli; F. De Martini; P. Mataloni

2006-06-01T23:59:59.000Z

444

The microscopic pairing gap in a slab of nuclear matter for the Argonne v18 NN-potential  

E-Print Network (OSTI)

Ab initio gap equation for ^1S_0 pairing in a nuclear slab is solved for the Argonne v18 NN-potential. The gap function is compared in detail with the one found previously for the separable form of the Paris potential. The difference between the two gaps turned out to be about 10%. Dependence of the gap on the chemical potential mu is analyzed.

S. S. Pankratov; M. Baldo; U. Lombardo; E. E. Saperstein; M. V. Zverev; ;

2008-01-12T23:59:59.000Z

445

Nanoscale strain-induced pair suppression as a source of vortex pinning in high-temperature superconductors  

SciTech Connect

Boosting large-scale superconductor applications require nanostructured conductors with artificial pinning centres immobilizing quantized vortices at high temperature and magnetic fields. Here we demonstrate a highly effective mechanism of artificial pinning centres in solution-derived high-temperature superconductor nanocomposites through generation of nanostrained regions where Cooper pair formation is suppressed. The nanostrained regions identified from transmission electron microscopy devise a very high concentration of partial dislocations associated with intergrowths generated between the randomly oriented nanodots and the epitaxial YBa{sub 2}Cu{sub 3}O{sub 7} matrix. Consequently, an outstanding vortex-pinning enhancement correlated to the nanostrain is demonstrated for four types of randomly oriented nanodot, and a unique evolution towards an isotropic vortex-pinning behaviour, even in the effective anisotropy, is achieved as the nanostrain turns isotropic. We suggest a new vortex-pinning mechanism based on the bond-contraction pairing model, where pair formation is quenched under tensile strain, forming new and effective core-pinning regions.

Llordes, A. [ICMAB, Barcelona, Spain; Palau, A. [ICMAB, Barcelona, Spain; Vlad, R. [ICMAB, Barcelona, Spain; Pomar, A. [ICMAB, Barcelona, Spain; Arbiol, Jordi [ICMAB, Barcelona, Spain; Guzman, Roger [ICMAB, Barcelona, Spain; Gazquez Alabart, Jaume [ORNL; Varela del Arco, Maria [ORNL; Sandiumenge, Felip [ICMAB, Barcelona, Spain; Ricart, Susagna [ICMAB, Barcelona, Spain; Puig, Teresa [ICMAB, Barcelona, Spain; Chataigner, D. [CRISMAT, Caen, France; Vanacken, J. [INPAC-Institute for Nanoscale Physics and Chemistry, Leuven, Belgium; Gutierrez, J. [INPAC-Institute for Nanoscale Physics and Chemistry, Leuven, Belgium; Deutscher, G. [Tel Aviv University; Moschalkov, V. [INPAC-Institute for Nanoscale Physics and Chemistry, Leuven, Belgium; Obradors, Xavier [ICMAB, Barcelona, Spain

2012-01-01T23:59:59.000Z

446

Multilepton Signatures of the Higgs Boson through its Production in Association with a Top-quark Pair  

E-Print Network (OSTI)

We consider the possible production of the Higgs Boson in association with a top-quark pair and its subsequent decay into a tau-lepton pair or a W-boson pair. This process can give rise to many signatures of the Higgs boson. These signatures can have electrons, muons, tau jets, bottom jets and/or light flavour jets. We analyze the viability of some of these signatures. We will look at those signatures where the background is minimal. In particular, we explore the viability of the signatures "isolated 4 electron/muon" and "isolated 3 electron/muon + a jet" The jet can be due to a light flavour quark/gluon, a bottom quark, or a tau lepton. Of all these signatures, we find that "isolated 3 electron/muon + a tau jet", with an extra bottom jet, can be an excellent signature of this mode of the Higgs boson production. We show that this signature may be visible within a year, once the Large Hadron Collider (LHC) restarts. Some of the other signatures would also be observable after the LHC accumulates sufficient luminosity.

Pankaj Agrawal; Somnath Bandyopadhyay; Siba Prasad Das

2013-08-14T23:59:59.000Z

447

Enhancement of Loop induced 125GeV Higgs pair production through Large-Extra-Dimensions model at the LHC  

E-Print Network (OSTI)

Based on the analysis of 5 fb^-1 of data at the LHC, the ATLAS and CMS collaborations have presented evidence for a Higgs boson with a mass in the 125 GeV range. We consider the 125 GeV neutral Higgs pair production process in the context of large-extra-dimensions(LED) model including the Kaluza-Klein(KK) excited gravitons at the LHC. We take into account the LED effects coming from gluon-gluon fusion and quark-antiquark collision channels as well as their corresponding next-to-leading order(NLO) QCD loop induced corrections. We analyse their impacts on both the total cross section and some key distributions. Indeed,pp -> HH has the clear advantage of a lower standard model(SM) background compare to process like pp -> jj, though its SM prediction is very small, it is shown that the LED model raises the cross section of Higgs pair production compare to its SM prediction and enhance the transverse momentum(pHT) and invariant mass(MHH) Distributions especially at high scales of pH T and MHH. By including the NLO QCD loop corrections, the scale dependence of total cross section can be reduced obviously. Choose suitable decay modes like HH -> bbrr or HH -> bbmumu and some simple cuts, we can strongly reduce the SM background but keep most of the LED effects, leading Higgs pair production a promising channel to search LED effects.

Hao Sun; Ya-Jin Zhou

2012-11-27T23:59:59.000Z

448

A qualitative perspective on the dynamics of a single-Cooper-pair box with a phase-damped cavity  

E-Print Network (OSTI)

In a recent paper Dajka, et.al., [J. Phys. A \\textbf{40}, F879 (2007)] predicted that some composite systems can be entangled forever even if coupled with a thermal bath. We analyze the transient entanglement of a single-Cooper-pair box biased by a classical voltage and irradiated by a quantized field and find the unusual feature that the phase-damped cavity can lead to a long-lived entanglement. The results show an asymptotic value of the idempotency defect (concurrence) which embodies coherence loss (entanglement survival), independent of the interaction development by dependent critically on environment.

Mahmoud Abdel-Aty

2008-01-18T23:59:59.000Z

449

Casimir dependence of transverse distribution of pairs produced from a strong constant chromo-electric background field  

E-Print Network (OSTI)

The transverse distribution of gluon and quark-antiquark pairs produced from a strong constant chromo-electric field depends on two gauge invariant quantities, $C_1=E^aE^a$ and $C_2=[d_{abc}E^aE^bE^c]^2$, as shown earlier in [G.C. Nayak and P. van Nieuwenhuizen, Phys. Rev. D 71, 125001 (2005)] for gluons and in [G.C. Nayak, Phys. Rev. D 72, 125010 (2005)] for quarks. Here, we discuss the explicit dependence of the distribution on the second Casimir invariant, C_2, and show the dependence is at most a 15% effect.

Fred Cooper; John F. Dawson; Bogdan Mihaila

2008-11-24T23:59:59.000Z

450

Casimir dependence of transverse distribution of pairs produced from a strong constant chromo-electric background field  

E-Print Network (OSTI)

The transverse distribution of gluon and quark-antiquark pairs produced from a strong constant chromo-electric field depends on two gauge invariant quantities, $C_1=E^aE^a$ and $C_2=[d_{abc}E^aE^bE^c]^2$, as shown earlier in [G.C. Nayak and P. van Nieuwenhuizen, Phys. Rev. D 71, 125001 (2005)] for gluons and in [G.C. Nayak, Phys. Rev. D 72, 125010 (2005)] for quarks. Here, we discuss the explicit dependence of the distribution on the second Casimir invariant, C_2, and show the dependence is at most a 15% effect.

Cooper, Fred; Mihaila, Bogdan

2008-01-01T23:59:59.000Z

451

Evidence for pairing above the transition temperature of cuprate superconductors from the electronic dispersion in the pseudogap phase.  

SciTech Connect

In the underdoped high temperature superconductors, instead of a complete Fermi surface above T{sub c}, only disconnected Fermi arcs appear, separated by regions that still exhibit an energy gap. We show that in this pseudogap phase, the energy-momentum relation of electronic excitations near E{sub F} behaves like the dispersion of a normal metal on the Fermi arcs, but like that of a superconductor in the gapped regions. We argue that this dichotomy in the dispersion is difficult to reconcile with a competing order parameter, but is consistent with pairing without condensation.

Kanigel, A.; Chatterjee, U.; Randeria, M.; Norman, M. R.; Koren, G.; Kadowaki, K.; Campuzano, J. C.; Materials Science Division; Univ. Illinois; Technion; Ohio State Univ.; Univ. Tsukuba

2008-01-01T23:59:59.000Z

452

Search for the giant pairing vibration through (p,t) reactions around 50 and 60 MeV  

Science Conference Proceedings (OSTI)

The existence of the giant pairing vibration (GPV) in {sup 120}Sn and {sup 208}Pb was investigated using the (p,t) reaction at incident proton energies of 50 MeV and 60 MeV for the scattering angles 0 deg. and 7 deg. No clear signature for the GPV was found, providing an upper limit for the cross section of {sigma}{sub max} = 0.2 mb. Theoretical interpretations for the low cross section of the GPV are discussed.

Mouginot, B.; Khan, E.; Azaiez, F.; Franchoo, S.; Ramus, A.; Scarpaci, J. A.; Stefan, I. [Institut de Physique Nucleaire, Universite Paris-Sud, IN2P3-CNRS, F-91406 Orsay Cedex (France); Neveling, R.; Buthelezi, E. Z.; Foertsch, S. V.; Smit, F. D. [iThemba LABS, P.O. Box 722, Somerset West 7129 (South Africa); Fujita, H.; Usman, I. [iThemba LABS, P.O. Box 722, Somerset West 7129 (South Africa); School of Physics, University of the Witwatersrand, Johannesburg 2050 (South Africa); Mabiala, J.; Mira, J. P.; Swartz, J. A. [iThemba LABS, P.O. Box 722, Somerset West 7129 (South Africa); Department of Physics, University of Stellenbosch, Matieland 7602 (South Africa); Papka, P. [Department of Physics, University of Stellenbosch, Matieland 7602 (South Africa)

2011-03-15T23:59:59.000Z

453

Few-photon transport in a waveguide coupled to a pair of colocated two-level atoms  

SciTech Connect

We calculate the one- and two-photon scattering matrices of a pair of collocated nonidentical two-level atoms coupled to a waveguide. We show that by proper choice of a two-photon input, the background fluorescence by the atoms may be completely quenched, as a result of quantum interference, and that when the atoms' detuning is smaller than their linewidths, extremely narrow fluorescence features emerge. Furthermore, the system emits a two-photon bound state which can display spatial oscillations or quantum beats, and can be tuned from bunched to antibunched statistics as the total photon energy is varied.

Rephaeli, Eden [Department of Applied Physics, Stanford University, Stanford, California 94305 (United States); Kocabas, Suekrue Ekin; Fan, Shanhui [Department of Electrical Engineering, Stanford University, Stanford, California 94305 (United States)

2011-12-15T23:59:59.000Z

454

Charged hadron transverse momentum spectra in Au+Au and d+Au collisions at 200 GeV per nucleon pair  

E-Print Network (OSTI)

The Relativistic Heavy Ion Collider (RHIC) collides Au ions at a center of mass energy of 200 GeV per nucleon pair, which produces the most energetic collisions yet seen in the laboratory. RHIC has also collided proton ...

Kane, Jay Lawrence

2005-01-01T23:59:59.000Z

455

Nodes in the gap function of LaFePO, the gap function of the Fe(Se,Te) systems, and the STM signature of the s(+/-) pairing  

E-Print Network (OSTI)

We reiterate, in more details, our previous proposal of using quasiparticle interference to determine the pairing form factor in iron-based superconductors. We also present our functional renormalization group (FRG) results ...

Wang, Fa

456

The role of multiparticle correlations and Cooper pairing in the formation of molecules in an ultracold gas of Fermi atoms with a negative scattering length  

Science Conference Proceedings (OSTI)

The influence of multiparticle correlation effects and Cooper pairing in an ultracold Fermi gas with a negative scattering length on the formation rate of molecules is investigated. Cooper pairing is shown to cause the formation rate of molecules to increase, as distinct from the influence of Bose-Einstein condensation in a Bose gas on this rate. This trend is retained in the entire range of temperatures below the critical one.

Babichenko, V. S., E-mail: vsbabichenko@hotmail.com; Kagan, Yu. [National Research Centre Kurchatov Institute (Russian Federation)

2012-11-15T23:59:59.000Z

457

Distinguishing S-plus-minus and S-plus-plus electron pairing symmetries by neutron spin resonances in superconducting Sodium-Iron-Cobalt-Arsenic (transitional temperature = 18 Kelvin)  

SciTech Connect

A determination of the superconducting (SC) electron pairing symmetry forms the basis for establishing a microscopic mechansim for superconductivity. For iron pnictide superconductors, the s{sup {+-}}-pairing symmetry theory predicts the presence of a sharp neutron spin resonance at an energy below the sum of hole and electron SC gap energies (E {le} 2{Delta}). Although the resonances have been observed for various iron pnictide superconductors, they are broad in energy and can also be interpreted as arising from the s{sup ++}-pairing symmetry with E {ge} 2{Delta}. Here we use inelastic neutron scattering to reveal a sharp resonance at E = 7 meV in the SC NaFe{sub 0.935}Co{sub 0.045}As (T{sub c} = 18 K). By comparing our experiments with calculated spin-excitations spectra within the s{sup {+-}} and s{sup ++}-pairing symmetries, we conclude that the resonance in NaFe{sub 0.935}Co{sub 0.045}As is consistent with the s{sup {+-}}-pairing symmetry, thus eliminating s{sup ++}-pairing symmetry as a candidate for superconductivity.

Das, Tanmoy [Los Alamos National Laboratory; Balatsky, Alexander V. [Los Alamos National Laboratory; Zhang, Chenglin [University of Tennessee, Knoxville, Tennessee; Li, Haifeng [Institut fur Festkorperforschung, Julich, Germany; Su, Yiki [The University of Tennessee, Knoxville, Tennessee; Nethertom, Tucker [The University of Tennessee, Knoxville, Tennessee; Redding, Caleb [The University of Tennessee, Knoxville, Tennessee; Carr, Scott [The University of Tennessee, Knoxville, Tennessee; Schneidewind, Astrid [Forschungsneutronenquelle Heinz, Garching, Germany; Faulhaber, Enrico [Gemeinsame Forschergruppe HZB, Berlin, Germany; Li, Shiliang [Institute of Physics, Chinese Academy of Sciences, Beijing, China; Yao, Daoxin [Sun Yat-Sen University, Guangzhou, China; Bruckel, Thomas [Institut fur Festkorperforschung, Julich, Germany; Dai, Pengchen [Institute of Physics, Chinese Academy of Sciences, Beijing, China; Sobolev, Oleg [Forschungsneutronenquelle Heinz, Garching, Germany

2012-06-05T23:59:59.000Z

458

Lasing on the D lines of sodium pumped by free{yields}free transitions of Na-Xe collision pairs  

SciTech Connect

Lasing on the D{sub 1} and D{sub 2} lines of Na (589.6 and 589.0 nm, respectively) has been generated simultaneously by photoexciting free{yields}free transitions of thermal Na-Xe collision pairs. Pumping the blue satellite of the Na D{sub 2} line in Na/Xe mixtures ({lambda} Almost-Equal-To 560 nm) selectively interacts with Na-Xe pairs having an instantaneous internuclear separation of {approx}5 A and culminates in the population of both Na (3{sup 2}P{sub J}) fine structure levels. The spectral width of the laser excitation spectrum is 1.3 nm (centered at 560.1 nm) and the 3{sup 2}P{sub 3/2}{yields}3{sup 2}S{sub 1/2} (D{sub 2}) laser linewidth was measured to be 9.2 {+-} 0.6 GHz, which is consistent with a coefficient of 18.4 MHz/Torr for broadening of the D{sub 2} 589.0 nm transition by Xe.

Hewitt, J. D.; Eden, J. G. [Laboratory for Optical Physics and Engineering, Department of Electrical and Computer Engineering, University of Illinois, Urbana, Illinois 61801 (United States)

2012-12-10T23:59:59.000Z

459

Magnetic Blockade Mechanism for Quantum Nucleation of Superconducting Vortex-Antivortex Pairs in Zero External Magnetic Field  

E-Print Network (OSTI)

We propose a magnetic dual of the Coulomb blockade effect for quantum nucleation of flux vortex pairs in high-Tc superconducting (HTS) films and grain boundaries in zero applied field. The magnetic blockade instability occurs at {\\theta} = {\\pi}, where {\\theta} is the "vacuum" or theta angle. The {\\theta} term has recently been discussed in the context of several other systems, including charge and spin density waves, topological insulators, the quantum Hall effect, and spontaneous CP violation. Our model predicts a sharp pair creation threshold current at {\\theta} = {\\pi}, analogous to the Coulomb blockade voltage of a tunnel junction, and explains the observed thickness dependence of critical currents in HTS coated conductors. We use the Schr\\"odinger equation to compute the evolving macrostate amplitudes, coupled by a generalized tunneling matrix element. The simulations yield excellent quantitative agreement with measured voltage-current characteristics of bi-crystal and other HTS grain boundary junctions. The model also predicts non-sinusoidal behavior in the voltage oscillations resulting from time-correlated vortex tunneling.

J. H. Miller Jr.; A. I. Wijesinghe

2011-10-12T23:59:59.000Z

460

Search for pair production of scalar top quarks in jets and missing transverse energy channel with the D0 detector  

SciTech Connect

This dissertation describes a search for the pair production of scalar top quarks, {tilde t}{sub 1}, using a luminosity of 995 pb{sup -1} of data collected in p{bar p} collisions with the D0 detector at the Fermilab Tevatron Collider at a center-of-mass energy {radical}s = 1.96 TeV. Both scalar top quarks are assumed to decay into a charm quark and a neutralino, {tilde {chi}}{sub 1}{sup 0}, where {tilde {chi}}{sub 1}{sup 0} is the lightest supersymmetric particle. This leads to a final state with two acoplanar charm jets and missing transverse energy. The yield of such events in data is found to be consistent with the expectations from known standard model processes. Sets of {tilde t}{sub 1} and {tilde {chi}}{sub 1}{sup 0} masses are excluded at the 95% confidence level that substantially extend the domain excluded by previous searches. With the theoretical uncertainty on the {tilde t}{sub 1} pair production cross section taken into account, the largest limit for m{sub {tilde t}{sub 1}} is m{sub {tilde t}{sub 1}} > 150 GeV, for m{sub {tilde {chi}}{sub 1}{sup 0}} = 65 GeV.

Shamim, Mansoora; /Kansas State U.

2008-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Isospin symmetry breaking at high spins in the mirror pair {sup 67}Se and {sup 67}As  

Science Conference Proceedings (OSTI)

Recent experimental data have revealed large mirror energy differences (MED) between high-spin states in the mirror nuclei {sup 67}Se and {sup 67}As, the heaviest pair where MED have been determined so far. The MED are generally attributed to the isospin symmetry breaking caused by the Coulomb force and by the isospin-nonconserving part of the nucleon-nucleon residual interaction. The different contributions of the various terms have been extensively studied in the fp shell. By employing large-scale shell-model calculations, we show that the inclusion of the g{sub 9/2} orbit causes interference between the electromagnetic spin-orbit and the Coulomb monopole radial terms at high spin. The large MED are attributed to the aligned proton pair excitations from the p{sub 3/2} and f{sub 5/2} orbits to the g{sub 9/2} orbit. The relation of the MED to deformation is discussed.

Kaneko, K. [Department of Physics, Kyushu Sangyo University, Fukuoka 813-8503 (Japan); Tazaki, S. [Department of Applied Physics, Fukuoka University, Fukuoka 814-0180 (Japan); Mizusaki, T. [Institute of Natural Sciences, Senshu University, Tokyo 101-8425 (Japan); Sun, Y.; Hasegawa, M. [Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); De Angelis, G. [Laboratori Nazionali di Legnaro dell'INFN, Legnaro (Padova), I-35020 (Italy)

2010-12-15T23:59:59.000Z

462

Combined search for the standard model Higgs boson decaying to a bb pair using the full CDF data set  

E-Print Network (OSTI)

We combine the results of searches for the standard model Higgs boson based on the full CDF Run II data set obtained from sqrt(s) = 1.96 TeV p-pbar collisions at the Fermilab Tevatron corresponding to an integrated luminosity of 9.45/fb. The searches are conducted for Higgs bosons that are produced in association with a W or Z boson, have masses in the range 90-150 GeV/c^2, and decay into bb pairs. An excess of data is present that is inconsistent with the background prediction at the level of 2.5 standard deviations (the most significant local excess is 2.7 standard deviations).

CDF Collaboration

2012-07-06T23:59:59.000Z

463

The Differential cross section distribution of Drell-Yan dielectron pairs in the z boson mass region  

SciTech Connect

We report on a measurement of the rapidity distribution, d{sigma}/dy, for Z=Drell-Yan {yields} ee events produced in p{bar p} collisions at {radical}s = 1.96 TeV. The data sample consists of 2.13 fb{sup -1} corresponding to about 160,000 Z/Drell-Yan {yields} ee candidates in the Z boson mass region collected by the Collider Detector at Fermilab. The d{sigma}/dy distribution, which is measured over the full kinematic range for e{sup +}e{sup -} pairs in the invariant mass range 66 < M{sub ee} < 116 GeV/c{sup 2}, is compared with theory predictions. There is good agreement between the data and predictions of Quantum Chromodynamics in Next to Leading Order with the CTEQ6.1M Parton Distribution Functions.

Han, Jiyeon; /Rochester U.

2008-11-01T23:59:59.000Z

464

Quantitative size-dependent structure and strain determination of CdSe nanoparticles using atomic pair distribution function analysis  

E-Print Network (OSTI)

The size-dependent structure of CdSe nanoparticles, with diameters ranging from 2 to 4 nm, has been studied using the atomic pair distribution function (PDF) method. The core structure of the measured CdSe nanoparticles can be described in terms of the wurtzite atomic structure with extensive stacking faults. The density of faults in the nanoparticles ~50% . The diameter of the core region was extracted directly from the PDF data and is in good agreement with the diameter obtained from standard characterization methods suggesting that there is little surface amorphous region. A compressive strain was measured in the Cd-Se bond length that increases with decreasing particle size being 0.5% with respect to bulk CdSe for the 2 nm diameter particles. This study demonstrates the size-dependent quantitative structural information that can be obtained even from very small nanoparticles using the PDF approach.

A. S. Masadeh; E. Bozin; C. L. Farrow; G. Paglia; P. Juhas; A. Karkamkar; M. G. Kanatzidis; S. J. L. Billinge

2007-04-10T23:59:59.000Z

465

Production of relativistic anti-hydrogen atoms by pair production with positron capture and measurement of the Lamb shift  

DOE Green Energy (OSTI)

A beam of relativistic antihydrogen atoms-the bound state ({bar p}e{sup +}){minus} can be created by circulating the beam of an antiproton storage ring through an internal gas target. An antiproton which passes through the Coulomb field of a nucleus will create e{sup +}e{sup {minus}} pairs, and antihydrogen will form when a positron is created in a bound instead of continuum state about the antiproton. The cross section for this process is roughly I Z{sup 2} pb for antiproton momenta above 6 GeV/c. A sample of 200 antihydrogen atoms in a low-emittance, neutral beam will be made in 1994 as an accidental byproduct of Fermilab experiment E760. We describe a simple experiment, Fermilab Proposal P862, which can detect this beam, and outline how a sample of a few-10{sup 4} atoms can be used to measure the antihydrogen Lamb shift to 1%.

Munger, C.T.; Brodsky, S.J. [Stanford Linear Accelerator Center, Menlo Park, CA (United States); Schmidt, I. [Universidad Tecnica Federico Santa Maria, Valparaiso (Chile)

1992-09-01T23:59:59.000Z

466

Methodology used in matched-pair audits designed to detect differential treatment in the mortgage lending pre-application process  

E-Print Network (OSTI)

Access to home mortgage loans has not been a dream equally realized in this country. Since the release of more detailed mortgage lending data, attention has been directed to loan approval differences across race. While denial rates for all races seemed to increase during the 1990s, the gap between minority and non-minority remained the same. This discussion looks at one particular method to identify discrimination at the pre-application stage of the lending process. The use of matched-pair audits is reviewed and a "pure" experimental design is developed. Practical application of the "pure" method is addressed while considering legal and cost concerns that may impair validity. Whether conducting discrimination audits for enforcement or market analysis, it is hoped that the concerns outlined within this discussion are addressed.

Haskin, Edward Arthur

2000-01-01T23:59:59.000Z

467

Investigation of surface structures by powder diffraction : a differential pair distribution function study on arsenate sorption on ferrihydrite.  

SciTech Connect

Differential pair distribution function (d-PDF) analysis of high energy powder X-ray diffraction data was carried out on 2-line ferrihydrite nanoparticles with arsenate oxyanions adsorbed on the surface to investigate the binding mechanism. In this analysis, a PDF of ferrihydrite is subtracted from a PDF of ferrihydrite with arsenate sorbed on the surface, leaving only correlations from within the surface layer and between the surface and the particle. As-O and As-Fe correlations were observed at 1.68 and 3.29 {angstrom}, respectively, in good agreement with previously published EXAFS data, confirming a bidentate binuclear binding mechanism. Further peaks are observed in the d-PDF which are not present in EXAFS, corresponding to correlations between As and O in the particle and As-2nd Fe.

Harrington, R.; Hausner, D. B.; Bhandari, N.; Strongin, D. R.; Chapman, K. W.; Chupas, P. J.; Middlemiss, D. S.; Grey, C. P.; Parise, J. B.; X-Ray Science Division; Stony Brook Univ.; Temple Univ.

2010-01-01T23:59:59.000Z

468

Superdeformed nuclei: Shells-vs-liquid drop, pairing-vs-thermal excitations, triaxial-vs-octupole shapes, super-superdeformation  

SciTech Connect

Mechanisms influencing the behavior of superdeformed nuclei are studied using several well established nuclear structure techniques. In particular: pairing, thermal excitation, shell and liquid-drop mechanisms are considered. The effects of quadrupole and hexadecapole (both axial and non-axial), and octupole deformation degrees of freedom are studied. Most of the results are illustrated using the case of /sup 152/Dy nucleus in which a superdeformed band extending up to I approx. 60 h-bar has been found in experiment. Some comparisons between /sup 152/Dy and the nuclei in the neighborhood are given. Calculations show that pairing ''de-aligns'' typically 6 to 8 units of angular momentum, as compared to the corresponding rigid rotation. This takes place for spins extending up to the highest limit, and thus diminishes the effective moments of inertia. Predicted octupole shape susceptibility is extremely large, significantly stronger than the susceptibilities known in the ground-states of many Actinide nuclei. Consequences of this result for the near-constancy of the dynamical moments of inertia are pointed out. Nuclear level densities calculated in function of spin, excitation energy and deformation explain the ''unusual'' side feeding pattern of the /sup 152/Dy superdeformed states. Predictions of super-superdeformed nuclear states (axis ratio varying between 2:1 and 3:1 or more) are given and exemplified for Erbium nuclei. Finally, the problem of superdeformation stability and the influence of increased collective inertia on a barrier penetration are examined. An analytical expression for the effective inertia parameter is obtained and its derivation outlined. 35 refs., 9 figs.

Dudek, J.

1987-01-01T23:59:59.000Z

469

Annual Performance Evaluation of a Pair of Energy Efficient Houses (WC3 and WC4) in Oak Ridge, TN  

SciTech Connect

Beginning in 2008, two pairs of energy-saver houses were built at Wolf Creek in Oak Ridge, TN. These houses were designed to maximize energy efficiency using new ultra-high-efficiency components emerging from ORNL s Cooperative Research and Development Agreement (CRADA) partners and others. The first two houses contained 3713 square feet of conditioned area and were designated as WC1 and WC2; the second pair consisted of 2721 square feet conditioned area with crawlspace foundation and they re called WC3 and WC4. This report is focused on the annual energy performance of WC3 and WC4, and how they compare against a previously benchmarked maximum energy efficient house of a similar footprint. WC3 and WC4 are both about 55-60% more efficient than traditional new construction. Each house showcases a different envelope system: WC3 is built with advanced framing featured cellulose insulation partially mixed with phase change materials (PCM); and WC4 house has cladding composed of an exterior insulation and finish system (EIFS). The previously benchmarked house was one of three built at the Campbell Creek subdivision in Knoxville, TN. This house (CC3) was designed as a transformation of a builder house (CC1) with the most advanced energy-efficiency features, including solar electricity and hot water, which market conditions are likely to permit within the 2012 2015 period. The builder house itself was representative of a standard, IECC 2006 code-certified, all-electric house built by the builder to sell around 2005 2008.

Biswas, Kaushik [ORNL; Christian, Jeffrey E [ORNL; Gehl, Anthony C [ORNL; Jackson, Roderick K [ORNL; Boudreaux, Philip R [ORNL

2012-04-01T23:59:59.000Z

470

From d-wave to s-wave pairing in the iron-pnictide superconductor (Ba, K)Fe2As2  

Science Conference Proceedings (OSTI)

The nature of the pairing state in iron-based superconductors is the subject of much debate. Here we argue that in one material, the stoichiometric iron pnictide KFe2As2, there is overwhelming evidence for a d-wave pairing state, characterized by symmetry-imposed vertical line nodes in the superconducting gap. This evidence is reviewed, with a focus on thermal conductivity and the strong impact of impurity scattering on the critical temperature Tc. We then compare KFe2As2 to Ba0.6K0.4Fe2As2, obtained by Ba substitution, where the pairing symmetry is s-wave and the Tc is ten times higher. The transition from d-wave to s-wave within the same crystal structure provides a rare opportunity to investigate the connection between band structure and pairing mechanism. We also compare KFe2As2 to the nodal iron-based superconductor LaFePO, for which the pairing symmetry is probably not d-wave, but more likely s-wave with accidental line nodes.

Reid, J.-Ph.; Juneau-Fecteau, A.; Gordon, R.T.; Rene de Cotret, S.; Doiron-Leyraud, N.; Luo, X.G.; Shakeripour, H.; Chang, J.; Tanatar, Makariy A.; Kim, Hyunsoo; Prozorov, Ruslan; Saito, T.; Fukazawa, H.; Kohori, Y.; Kihou, K.; Lee, C.H.; Iyo, A.; Eisaki, H.; Shen, B.; Wen, H.-W.; Taillefer, Louis

2012-07-17T23:59:59.000Z

471

Pairing, Off-Diagonal Long-Range Order, and Quantum Phase Transition in Strongly Attracting Ultracold Bose Gas Mixtures in Tight Waveguides  

Science Conference Proceedings (OSTI)

A model of two 1D ideal Bose gases A and B with strong odd-wave AB attractions induced by a p-wave AB Feshbach resonance is studied. The model is solved exactly by a Bose-Bose duality mapping, and it is shown that there is no A-component or B-component Bose-Einstein condensation and no AB-pair off-diagonal long-range order (ODLRO), but both AA-pair and BB-pair ODLRO. After generalization by adding even-wave AA and BB repulsions and reducing the strength of the odd-wave AB attraction by Feshbach resonance detuning, a quantum phase transition occurs between a phase with AB contact nodes and one with no such nodes.

Girardeau, M. D. [College of Optical Sciences, University of Arizona, Tucson, Arizona 85721 (United States)

2009-06-19T23:59:59.000Z

472

New Mexico Distribution of Wells by Production Rate Bracket  

U.S. Energy Information Administration (EIA)

Oil Wells Gas Wells; Prod. Rate Bracket (BOE/Day) | | | | # of Oil Wells % of Oil Wells Annual Oil Prod. (Mbbl) % of Oil Prod. Oil Rate per Well ...

473

Pair-Trawl Detection of PIT-Tagged Juvenile Salmonids Migrating in the Columbia River Estuary, 2008 Report of Research.  

DOE Green Energy (OSTI)

In 2008, we sampled migrating juvenile Pacific salmonids Oncorhynchus spp. tagged with passive integrated transponder (PIT) tags using a surface pair trawl in the upper Columbia River estuary (rkm 61-83). The cod-end of the trawl was replaced with a cylindrical PIT-tag detection antenna with an 86-cm-diameter fish-passage opening and two detection coils connected in series. The pair trawl was 105 m long with a 91.5-m opening between the wings and a sample depth of 4.9 m. Also during 2008, we finalized the development of a prototype 'matrix' antenna, which was larger than previous antennas by a considerable magnitude. The matrix antenna consisted of 6 coils: a 3-coil front component and a 3-coil rear component, which were separated by 1.5-m of net mesh. The fish-passage opening was 2.5 m wide by 3.0 m tall and was attached to a standard-size pair trawl net. Intermittent sampling with a single crew began on 7 March and targeted yearling Chinook salmon O. tshawytscha and steelhead O. mykiss. Daily sampling using two crews began on 30 April and continued through 14 June; during this period we detected 2.7% of all juvenile salmonids previously detected at Bonneville Dam--a measure of sample efficiency. Sampling with a single crew continued through 20 August and targeted subyearling Chinook salmon. We detected 7,397 yearling Chinook salmon, 2,735 subyearling Chinook salmon, 291 coho salmon O. kisutch, 5,950 steelhead, and 122 sockeye salmon O. nerka in the upper estuary. We deployed the matrix antenna system and the older, cylindrical antenna system (86-cm-diameter fish-passage opening) simultaneously in mid-May 2008 to test matrix detection efficiency. The cylindrical antenna system had been used successfully in 2007 and early 2008. Because distribution of migrating salmonids in the estuary changes rapidly, we felt that a tandem sampling effort between the two systems was the only way to truly evaluate comparative detection efficiency. We deployed both systems within 1 km of each other during a period of high fish densities on 13, 14, and 15 May. Detections of the matrix system surpassed those of the cylindrical system by 53% in 14 h of simultaneous sampling (total detections 716 and 339, respectively). We believe that the higher detection rate observed with the matrix system was due to fewer smolts escaping the trawl entrance and to more smolts readily passing through the larger fish-passage opening. After tandem sampling, we continued exclusive use of the matrix system for the remainder of the 2008 juvenile migration season. Mean survival rates from Lower Granite to Bonneville Dam for yearling Chinook salmon and steelhead were 42% (SE = 3.7%) and 46% (SE = 1.5%), respectively. Over 358,000 PIT-tagged salmonids were transported, and we detected 4,619 of these fish.

Magie, Robert J.; Morris, Matthew S.; Ledgerwood, Richard D. [Northwest Fisheries Science Center

2009-06-03T23:59:59.000Z

474

Lung pair phantom  

DOE Patents (OSTI)

The present invention is a material and method of making the material that exhibits improved radiation attenuation simulation of real lungs, i.e., an ``authentic lung tissue`` or ALT phantom. Specifically, the ALT phantom is a two-part polyurethane medium density foam mixed with calcium carbonate, potassium carbonate if needed for K-40 background, lanthanum nitrate, acetone, and a nitrate or chloride form of a radionuclide. This formulation is found to closely match chemical composition and linear attenuation of real lungs. The ALT phantom material is made according to established procedures but without adding foaming agents or preparing thixotropic concentrate and with a modification for ensuring uniformity of density of the ALT phantom that is necessary for accurate simulation. The modification is that the polyurethane chemicals are mixed at a low temperature prior to pouring the polyurethane mixture into the mold.

Olsen, P.C.; Gordon, N.R.; Simmons, K.L.

1993-11-30T23:59:59.000Z

475

Lung pair phantom  

DOE Patents (OSTI)

The present invention is a material and method of making the material that exhibits improved radiation attenuation simulation of real lungs, i.e., an "authentic lung tissue" or ALT phantom. Specifically, the ALT phantom is a two-part polyurethane medium density foam mixed with calcium carbonate, potassium carbonate if needed for K-40 background, lanthanum nitrate, acetone, and a nitrate or chloride form of a radionuclide. This formulation is found to closely match chemical composition and linear attenuation of real lungs. The ALT phantom material is made according to established procedures but without adding foaming agents or preparing thixotropic concentrate and with a modification for ensuring uniformity of density of the ALT phantom that is necessary for accurate simulation. The modification is that the polyurethane chemicals are mixed at a low temperature prior to pouring the polyurethane mixture into the mold.

Olsen, Peter C. (West Richland, WA); Gordon, N. Ross (Kennewick, WA); Simmons, Kevin L. (Kennewick, WA)

1993-01-01T23:59:59.000Z

476

Measurement of the top quark pair production cross section in the dilepton channel using lepton+track selection  

SciTech Connect

The production cross section for t{bar t} pairs decaying into two lepton final states was measured using data from the D0 detector at Fermilab. The measurement was made using a lepton+track selection, where one lepton is fully identified and the second lepton is observed as an isolated track. This analysis is designed to complement similar studies using two fully identified leptons [1]. The cross section for the lepton+track selection was found to be {sigma} = 5.2{sub -1.4}{sup +1.6}(stat){sub -0.8}{sup +0.9}(syst) {+-} 0.3(lumi) pb. The combined cross section using both the lepton+track data and the data from the electron+electron, electron+muon, and muon+muon samples is: {sigma} = 6.4{sub -0.9}{sup +0.9}(stat){sub -0.7}{sup +0.8}(syst) {+-} 0.4(lumi) pb.

Wagner, Robert Emil; /Princeton U.

2008-09-01T23:59:59.000Z

477

Ground states of semi-relativistic Pauli-Fierz and no-pair Hamiltonians in QED at critical Coulomb coupling  

E-Print Network (OSTI)

We consider the semi-relativistic Pauli-Fierz Hamiltonian and a no-pair model of a hydrogen-like atom interacting with a quantized photon field at the respective critical values of the Coulomb coupling constant. For arbitrary values of the fine-structure constant and the ultra-violet cutoff, we prove the existence of normalizable ground states of the atomic system in both models. This complements earlier results on the existence of ground states in (semi-)relativistic models of quantum electrodynamics at sub-critical coupling by E. Stockmeyer and the present authors. Technically, the main new achievement is an improved estimate on the spatial exponential localization of low-lying spectral subspaces yielding uniform bounds at large Coulomb coupling constants. In the semi-relativistic Pauli-Fierz model our exponential decay rate given in terms of the binding energy reduces to the one known from the electronic model when the radiation field is turned off. In particular, an increase of the binding energy due to the radiation field is shown to improve the localization of ground states.

Martin Knenberg; Oliver Matte

2011-06-07T23:59:59.000Z

478

Argonne V18 Pair Interaction Plus Modern Versions of Urbana or Illinois Three-Body Forces Make Neutron Matter Unstable  

E-Print Network (OSTI)

It is shown that the neutron matter interacting through Argonne V18 pair-potential plus modern variants of Urbana or Illinois three-body forces is unstable. For the energy of $N$ neutrons E(N), which interact through these forces, we prove mathematically that $E(N) = -cN^3 + \\mathcal{O}(N^{8/3})$, where $c>0$ is a constant. This means that: (i) the energy per particle and neutron density diverge rapidly for large neutron numbers; (ii) bound states of $N$ neutrons exist for $N$ large enough. The neutron matter collapse is possible due to the form of the repulsive core in three-body forces, which vanishes when three nucleons occupy the same site in space. The old variant of the forces Urbana VI, where the phenomenological repulsive core does not vanish at the origin, resolves this problem. The obtained results partly change the paradigm, in which the stability of neutron stars is attained through the Pauli principle; the strong repulsive core in the nucleon interactions is by no means less important.

Dmitry K. Gridnev; Stefan Schramm; Walter Greiner; Konstantin Gridnev

2013-06-24T23:59:59.000Z

479

Combining pair distribution function and computational methods to understand lithium insertion in brookite (TiO{sub 2}).  

Science Conference Proceedings (OSTI)

X-ray pair distribution function (PDF) methods and first-principles calculations have been combined to probe the structure of electrochemically lithiated TiO{sub 2} Brookite. Traditional powder diffraction studies suggest that Brookite amorphizes upon lithium insertion, with the Bragg reflections disappearing. However, PDF analysis indicates that the TiO{sub 2} framework connectivity is maintained throughout lithium intercalation, with expansions along the a and b axes. The Li{sup +} ions within the framework are poorly observed in the X-ray PDF, which is dominated by contributions from the more strongly scattering Ti and O atoms. First-principles calculations were used to identify energetically favorable Li{sup +} sites within the Brookite lattice and to develop a complete structural model of the lithiated material. This model replicates the local structure and decreased intermediate range order observed in the PDF data. The analysis suggests that local structural distortions of the TiO{sub 2} lattice accommodate lithium in five-coordinate sites. This structural model is consistent with the observed electrochemical behavior.

Dambournet, D.; Chapman, K. W.; Koudriachova, M. V.; Chupas, P. J.; Belharouak, I.; Amine, K. (X-Ray Science Division); ( CSE); (Univ. Coll. London)

2011-07-04T23:59:59.000Z

480

Optimal Planning of a Load Transfer Substation Pair between Two Normally Closed-Loop Feeders Considering Minimization of System Power Losses Using a Genetic Algorithm  

Science Conference Proceedings (OSTI)

This paper proposes an effective approach for planning a load transfer substation pair(LTSP) between two normally closed-loop feeders considering minimization of system power losses. Firstly, the annual equivalent load of each load point is calculated. ... Keywords: distribution feeder, normally closed-loop feeder, distribution substation, genetic algorithm, power losses

Wei-Tzer Huang; Kai-chao Yao; Shiuan-Tai Chen; Hsiau-Hsian Nien; Deng-Chung Lin; Po-Tung Huang

2010-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "brems pair prod" from the National Library of EnergyBeta (NLEBeta).
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481

QED Vacuum Schwinger Effect for E(x, t) = E(t) Results Schwinger Effect for E(x, t) Summary Schwinger Pair Production in  

E-Print Network (OSTI)

Schwinger Pair Production in Strong Electric Fields Florian Hebenstreit Advisers: R. Alkofer (KFU Graz), H for E(x, t) = E(t) Results Schwinger Effect for E(x, t) Summary Historical overview: Does, Decay rates... · Feynman Diagrams: Graphical representation Electron Line ¡ Photon Line ¡ Elementary

Seyfarth, Andre

482

About the creation of proton-anti-proton pair at electron-positron collider in the energy range of the mass $\\Psi(3770)$  

E-Print Network (OSTI)

The process of electron--positron annihilation into proton--antiproton pair is considered within the vicinity of $\\psi(3770)$ resonance. The interference between the pure electromagnetic intermediate state and the $\\psi(3770)$ state is evaluated. It is shown that this interference is destructive and the relative phase between these two contributions is large ($\\phi_0 \\approx 250^o$).

Ahmadov, A I; Kuraev, E A; Wang, P

2013-01-01T23:59:59.000Z

483

About the creation of proton-anti-proton pair at electron-positron collider in the energy range of the mass $?(3770)$  

E-Print Network (OSTI)

The process of electron--positron annihilation into proton--antiproton pair is considered within the vicinity of $\\psi(3770)$ resonance. The interference between the pure electromagnetic intermediate state and the $\\psi(3770)$ state is evaluated. It is shown that this interference is destructive and the relative phase between these two contributions is large ($\\phi_0 \\approx 250^o$).

A. I. Ahmadov; Yu. M. Bystritskiy; E. A. Kuraev; P. Wang

2013-04-03T23:59:59.000Z

484

Evidence for a Particle Produced in Association with Weak Bosons and Decaying to a Bottom-Antibottom Quark Pair in Higgs Boson Searches at the Tevatron  

E-Print Network (OSTI)

We combine searches by the CDF and D0 Collaborations for the associated production of a Higgs boson with a W or Z boson and subsequent decay of the Higgs boson to a bottom-antibottom quark pair. The data, originating from ...

Gomez-Ceballos, Guillelmo

485

Si[subscript C]C[subscript Si] antisite pairs in SiC identified as paramagnetic defects with strongly anisotropic orbital quenching  

E-Print Network (OSTI)

The nearest-neighbor antisite pair defects in 4H-SiC, 6H-SiC, and 3C-SiC single crystals have been identified using electron paramagnetic resonance spectroscopy in combination with a nonperturbative ab initio scheme for ...

Ceresoli, Davide

486

Altering the Electrostatic Potential in the Major Groove: Thermodynamic and Structural Characterization of 7-Deaza-2;#8242;-deoxyadenosine:dT Base Pairing in DNA  

Science Conference Proceedings (OSTI)

As part of an ongoing effort to explore the effect of major groove electrostatics on the thermodynamic stability and structure of DNA, a 7-deaza-2'-deoxyadenosine:dT (7-deaza-dA:dT) base pair in the Dickerson-Drew dodecamer (DDD) was studied. The removal of the electronegative N7 atom on dA and the replacement with an electropositive C-H in the major groove was expected to have a significant effect on major groove electrostatics. The structure of the 7-deaza-dA:dT base pair was determined at 1.1 {angstrom} resolution in the presence of Mg{sup 2+}. The 7-deaza-dA, which is isosteric for dA, had minimal effect on the base pairing geometry and the conformation of the DDD in the crystalline state. There was no major groove cation association with the 7-deaza-dA heterocycle. In solution, circular dichroism showed a positive Cotton effect centered at 280 nm and a negative Cotton effect centered at 250 nm that were characteristic of a right-handed helix in the B-conformation. However, temperature-dependent NMR studies showed increased exchange between the thymine N3 imino proton of the 7-deaza-dA:dT base pair and water, suggesting reduced stacking interactions and an increased rate of base pair opening. This correlated with the observed thermodynamic destabilization of the 7-deaza-dA modified duplex relative to the DDD. A combination of UV melting and differential scanning calorimetry experiments were conducted to evaluate the relative contributions of enthalpy and entropy in the thermodynamic destabilization of the DDD. The most significant contribution arose from an unfavorable enthalpy term, which probably results from less favorable stacking interactions in the modified duplex, which was accompanied by a significant reduction in the release of water and cations from the 7-deaza-dA modified DNA.

Kowal, Ewa A.; Ganguly, Manjori; Pallan, Pradeep S.; Marky, Luis A.; Gold, Barry; Egli, Martin; Stone, Michael P. (Pitt); (Vanderbilt); (Nebraska-Med)

2012-02-15T23:59:59.000Z

487

Semiclassical pair production rate for time-dependent electrical fields with more than one component: -WKB-approach and world-line instantons  

E-Print Network (OSTI)

We present an analytic calculation of the semiclassical electron-positron pair creation rate by time-dependent electrical fields. We use two methods, first the imaginary time method in the WKB-approximation and second the world-line instanton approach. Both methods are generalized to time-dependent electric fields with more than one component. The two methods give the same result if the momentum spectrum of the produced pairs is peaked around $\\vec{p}=0$. The result in the world-line instanton approach can be obtained from the WKB result by a Taylor expansion around this peak. For the examples usually discussed in the literature the field has one com