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Note: This page contains sample records for the topic "neutrino astrophysics division" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


1

Birth of Neutrino Astrophysics  

ScienceCinema (OSTI)

Based mainly on the results of two experiments, KamiokaNDE and Super-KamiokaNDE, the birth of neutrino astrophysics will be described. At the end, the result of the third generation Kamioka experiment, KamLAND, will be discussed together with the future possibilities.Organiser(s): Daniel Treille / EP DivisionNote: * Tea & coffee will be served at 16:00 hrs. Please note unusual day.

None

2011-10-06T23:59:59.000Z

2

Firewall Phenomenology with Astrophysical Neutrinos  

E-Print Network (OSTI)

One of the most fundamental features of a black hole in general relativity is its event horizon: a boundary from which nothing can escape. There has been a recent surge of interest in the nature of these event horizons and their local neighbourhoods. In an attempt to resolve black hole information paradox(es), and more generally, to better understand the path towards quantum gravity, firewalls have been proposed as an alternative to black hole event horizons. In this letter, we explore the phenomenological implications of black holes possessing a surface or firewall. We predict a potentially detectable signature of these firewalls in the form of a high energy astrophysical neutrino flux. We compute the spectrum of this neutrino flux in different models and show that it is a possible candidate for the source of the PeV neutrinos recently detected by IceCube. We further show that, independent of the generation mechanism, IceCube data can be explained (at $1\\sigma$ confidence level) by conversion of accretion on...

Afshordi, Niayesh

2015-01-01T23:59:59.000Z

3

Neutrino mixing and oscillations in astrophysical environments  

SciTech Connect

A brief review of the current status of neutrino mixing and oscillations in astrophysical environments, with particular emphasis on the Sun and core-collapse supernovae, is given. Implications of the existence of sterile states which mix with the active neutrinos are discussed.

Balantekin, A. B. [Physics Department, University of Wisconsin, Madison WI 53706 (United States)

2014-05-02T23:59:59.000Z

4

E-Print Network 3.0 - astrophysics science division Sample Search...  

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

science division Search Powered by Explorit Topic List Advanced Search Sample search results for: astrophysics science division Page: << < 1 2 3 4 5 > >> 1 Laboratory Astrophysics...

5

Technology Development for a Neutrino AstrophysicalObservatory  

SciTech Connect

We propose a set of technology developments relevant to the design of an optimized Cerenkov detector for the study of neutrino interactions of astrophysical interest. Emphasis is placed on signal processing innovations that enhance significantly the quality of primary data. These technical advances, combined with field experience from a follow-on test deployment, are intended to provide a basis for the engineering design for a kilometer-scale Neutrino Astrophysical Observatory.

Chaloupka, V.; Cole, T.; Crawford, H.J.; He, Y.D.; Jackson, S.; Kleinfelder, S.; Lai, K.W.; Learned, J.; Ling, J.; Liu, D.; Lowder, D.; Moorhead, M.; Morookian, J.M.; Nygren, D.R.; Price, P.B.; Richards, A.; Shapiro, G.; Shen, B.; Smoot, George F.; Stokstad, R.G.; VanDalen, G.; Wilkes, J.; Wright, F.; Young, K.

1996-02-01T23:59:59.000Z

6

Technology development for a neutrino astrophysical observatory. Letter of intent  

SciTech Connect

The authors propose a set of technology developments relevant to the design of an optimized Cerenkov detector for the study of neutrino interactions of astrophysical interest. Emphasis is placed on signal processing innovations that enhance significantly the quality of primary data. These technical advances, combined with field experience from a follow-on test deployment, are intended to provide a basis for the engineering design for a kilometer-scale Neutrino Astrophysical Observatory.

Chaloupka, V.; Cole, T.; Crawford, H.J. [and others

1996-02-01T23:59:59.000Z

7

Acoustic detection of astrophysical neutrinos in South Pole ice  

E-Print Network (OSTI)

When high-energy particles interact in dense media to produce a particle shower, most of the shower energy is deposited in the medium as heat. This causes the medium to expand locally and emit a shock wave with a medium-dependent peak frequency on the order of 10 kHz. In South Pole ice in particular, the elastic properties of the medium have been theorized to provide good coupling of particle energy to acoustic energy. The acoustic attenuation length has been theorized to be several km, which could enable a sparsely instrumented large-volume detector to search for rare signals from high-energy astrophysical neutrinos. We simulated a hybrid optical/radio/acoustic extension to the IceCube array, specifically intended to detect cosmogenic (GZK) neutrinos with multiple methods simultaneously in order to achieve high confidence in a discovered signal and to measure angular, temporal, and spectral distributions of GZK neutrinos. This work motivated the design, deployment, and operation of the South Pole Acoustic Te...

Vandenbroucke, Justin

2012-01-01T23:59:59.000Z

8

computational infrastructure for nuclear astrophysics Michael Smith, Physics Division, Oak Ridge Na:onal Lab coordinator@nucastrodata.org  

E-Print Network (OSTI)

computational infrastructure for nuclear astrophysics Michael Smith, Physics Division, Oak Ridge Na:onal Lab coordinator@nucastrodata.org #12;computational infrastructure for nuclear astrophysics system overview ·work with nuclear information, reaction rates, & simulations ·operates "in

9

Search for a diffuse flux of astrophysical muon neutrinos with the IceCube 40-string detector  

Science Journals Connector (OSTI)

The IceCube Neutrino Observatory is a 1??km3 detector currently taking data at the South Pole. One of the main strategies used to look for astrophysical neutrinos with IceCube is the search for a diffuse flux of high-energy neutrinos from unresolved sources. A hard energy spectrum of neutrinos from isotropically distributed astrophysical sources could manifest itself as a detectable signal that may be differentiated from the atmospheric neutrino background by spectral measurement. This analysis uses data from the IceCube detector collected in its half completed configuration which operated between April 2008 and May 2009 to search for a diffuse flux of astrophysical muon neutrinos. A total of 12?877 upward-going candidate neutrino events have been selected for this analysis. No evidence for a diffuse flux of astrophysical muon neutrinos was found in the data set leading to a 90% C.L. upper limit on the normalization of an E-2 astrophysical ?? flux of 8.910-9??GeV?cm-2?s-1?sr-1. The analysis is sensitive in the energy range between 35TeV and 7PeV. The 12?877 candidate neutrino events are consistent with atmospheric muon neutrinos measured from 332GeV to 84TeV and no evidence for a prompt component to the atmospheric neutrino spectrum is found.

R. Abbasi et al. (IceCube Collaboration)

2011-10-03T23:59:59.000Z

10

NASA/TM-2013-217509 Goddard's Astrophysics Science Division Annual Report 2012  

E-Print Network (OSTI)

NASA/TM-2013-217509 Goddard's Astrophysics Science Division Annual Report 2012 Padi Boyd and Francis Reddy, Editors Pat Tyler, Graphical Editor May 2013 NASA Goddard Space Flight Center Greenbelt, Maryland 20771 #12;The NASA STI Program Office ... in Profile Since its founding, NASA has been dedicated

Christian, Eric

11

NASA/TM-2014-217523 Goddard's Astrophysics Science Division Annual Report 2013  

E-Print Network (OSTI)

NASA/TM-2014-217523 Goddard's Astrophysics Science Division Annual Report 2013 Kimberly Weaver and Francis Reddy, Editors Pat Tyler, Graphical Editor June 2014 NASA Goddard Space Flight Center Greenbelt, Maryland 20771 #12;The NASA STI Program Office ... in Profile Since its founding, NASA has been dedicated

Christian, Eric

12

NASA/TM2009214182 The Astrophysics Science Division Annual Report 2008  

E-Print Network (OSTI)

NASA/TM�2009�214182 The Astrophysics Science Division Annual Report 2008 William Oegerle and Francis Reddy, Editors Pat Tyler, Graphical Editor March 2009 #12;The NASA STI Program Office ... in Profile Since its founding, NASA has been dedicated to the advancement of aeronautics and space science

Christian, Eric

13

Search for a diffuse flux of astrophysical muon neutrinos with the IceCube 59-string configuration  

Science Journals Connector (OSTI)

A search for high-energy neutrinos was performed using data collected by the IceCube Neutrino Observatory from May 2009 to May 2010, when the array was running in its 59-string configuration. The data sample was optimized to contain muon neutrino induced events with a background contamination of atmospheric muons of less than 1%. These data, which are dominated by atmospheric neutrinos, are analyzed with a global likelihood fit to search for possible contributions of prompt atmospheric and astrophysical neutrinos, neither of which have yet been identified. Such signals are expected to follow a harder energy spectrum than conventional atmospheric neutrinos. In addition, the zenith angle distribution differs for astrophysical and atmospheric signals. A global fit of the reconstructed energies and directions of observed events is performed, including possible neutrino flux contributions for an astrophysical signal and atmospheric backgrounds as well as systematic uncertainties of the experiment and theoretical predictions. The best fit yields an astrophysical signal flux for ??+?? of E2?(E)=0.2510?8??GeV?cm?2?s?1?sr?1, and a zero prompt component. Although the sensitivity of this analysis for astrophysical neutrinos surpasses the Waxman and Bahcall upper bound, the experimental limit at 90% confidence level is a factor of 1.5 above at a flux of E2?(E)=1.4410?8??GeV?cm?2?s?1?sr?1.

M.?G. Aartsen et al.

2014-03-25T23:59:59.000Z

14

Impact on Astrophysics and Elementary Particle Physics of recent and future solar neutrino data  

E-Print Network (OSTI)

The study of neutrinos is fundamental to connect astrophysics and elementary particle physics. In this last decade solar neutrino experiments and KamLAND confirmed the LMA solution and further clarified the mass and oscillation pattern. Borexino attacked also the study of the low energy neutrino spectrum. However, important points still need clarification, like the apparent anomaly in the vacuum to matter transition region. Besides, a more detailed study of the low energy components of the pp cycle, combined with a measurement of CNO fluxes, is compulsory, also to discriminate between the low and the high Z versions of the Solar Standard Models and solve the metallicity problem. We discuss the main recent advancements and the possibilities of studying these open problems with Borexino, SNO+ and the future experiments, like the next generation of scintillators.

Vito Antonelli; Lino Miramonti

2013-11-11T23:59:59.000Z

15

Dark Matter vs. Neutrinos: The effect of astrophysical uncertainties and timing information on the neutrino floor  

E-Print Network (OSTI)

Future multi-tonne Direct Detection experiments will be sensitive to solar neutrino induced nuclear recoils which form an irreducible background to light Dark Matter searches. Indeed for masses around 6 GeV the spectra of neutrinos and Dark Matter are so similar that experiments will run into a neutrino floor, for which sensitivity increases only marginally with exposure past a certain cross section. In this work we show that this floor can be overcome using the different annual modulation expected from solar neutrinos and Dark Matter. Specifically for cross sections below the neutrino floor the DM signal is observable through a phase shift and a smaller amplitude for the time-dependent event rate. This allows the exclusion power to be improved by up to an order of magnitude for large exposures. In addition we demonstrate that the neutrino floor exists over a wider mass range than has been previously shown, since the large uncertainties in the Dark Matter velocity distribution make the signal spectrum harder to distinguish from the neutrino background. However for most velocity distributions the neutrino floor can still be surpassed using timing information, though certain velocity streams may prove problematic.

Jonathan H. Davis

2014-12-03T23:59:59.000Z

16

Observation of High-Energy Astrophysical Neutrinos in Three Years of IceCube Data  

Science Journals Connector (OSTI)

A search for high-energy neutrinos interacting within the IceCube detector between 2010 and 2012 provided the first evidence for a high-energy neutrino flux of extraterrestrial origin. Results from an analysis using the same methods with a third year (20122013) of data from the complete IceCube detector are consistent with the previously reported astrophysical flux in the 100TeVPeV range at the level of 10?8??GeV?cm?2?s?1?sr?1 per flavor and reject a purely atmospheric explanation for the combined three-year data at 5.7?. The data are consistent with expectations for equal fluxes of all three neutrino flavors and with isotropic arrival directions, suggesting either numerous or spatially extended sources. The three-year data set, with a live time of 988 days, contains a total of 37 neutrino candidate events with deposited energies ranging from 30 to 2000TeV. The 2000-TeV event is the highest-energy neutrino interaction ever observed.

M.?G. Aartsen et al. (IceCube Collaboration)

2014-09-02T23:59:59.000Z

17

Grand Observatories and multiple-OWL for high energy neutrino astrophysics  

Science Journals Connector (OSTI)

A possible Space Factory on the International Space Station (ISS) for Grand Observatories would permit a large astrophysical observatory in space. Grand-Observatories could revolutionize the great observatories that were hitherto pre-assembled and deployed by the Space Transportation System (STS). The concept of the ISS-Space-Factory envisages a plan of orbital construction fine-tuning and deployment of large-scale astrophysical instruments into the desired free-flying orbit. It incorporates physical aids of the robotics arms and Extra-Vehicular Activities (EVA) of astronauts. This concept study also examines the necessary infrastructure on ISS for manufacturing a large spaceship for future deployment to the Moon Mars and other interplanetary destinations. We envision a step-by-step advancement of the Space Factory with the most frontier astrophysical programs. Less demanding experiments could precede the construction of the most demanding optical telescopes. Multiple-OWL (Orbiting-array of Wide-angle Light collector) has very forgiving optical resolution (?0.1 degrees) and would be suitable for the first generation payload to be built on and deployed from the ISS. This system is an earths night-sky-watcher for observing the highest energy cosmic rays and other atmospheric phenomena and is currently in the SEU Explorer Concept. Using the Space Factory this collector can drastically advance its capacity to cover a 120 Field-of-View (FOV) in which the entire horizon of the earth (?6000 km diameter) can be viewed from a low-earth orbit (?1000 km). We have already developed a revolutionary wide-angle Fresnel-lens optic in the OWL program and the Multiple-OWL can use several units of them. As one of the Grand Observatories the proposed Multiple-OWL satellite can open a new window for observational universe in terms of high energy neutrino astrophysics. The OWL may also be used for monitoring earth-threatening meteorites if flipped on orbit at daytime for deep space observation.

Yoshiyuki Takahashi; John O. Dimmock; Lloyd W. Hillman; James B. Hadaway; David J. Lamb; Mamoru Mohri; Toshikazu Ebisuzaki

1999-01-01T23:59:59.000Z

18

Possible explanation for the low flux of high energy astrophysical muon neutrinos  

SciTech Connect

I consider the possibility that some exotic neutrino property is responsible for reducing the muon neutrino flux at high energies from distant sources; specifically, (i) neutrino decay and (ii) neutrinos being pseudo-Dirac particles. This would provide a mechanism for the lack of high energy muon events in the Icecube detector.

Pakvasa, Sandip [Department of Physics and Astronomy, University of Hawaii, Honolulu, HI 96822 (United States)

2013-05-23T23:59:59.000Z

19

Current trends in non-accelerator particle physics: 1, Neutrino mass and oscillation. 2, High energy neutrino astrophysics. 3, Detection of dark matter. 4, Search for strange quark matter. 5, Magnetic monopole searches  

SciTech Connect

This report is a compilation of papers reflecting current trends in non-accelerator particle physics, corresponding to talks that its author was invited to present at the Workshop on Tibet Cosmic Ray Experiment and Related Physics Topics held in Beijing, China, April 4--13, 1995. The papers are entitled `Neutrino Mass and Oscillation`, `High Energy Neutrino Astrophysics`, `Detection of Dark Matter`, `Search for Strange Quark Matter`, and `Magnetic Monopole Searches`. The report is introduced by a survey of the field and a brief description of each of the author`s papers.

He, Yudong [California Univ., Berkeley, CA (United States)]|[Lawrence Berkeley Lab., CA (United States)

1995-07-01T23:59:59.000Z

20

Nuclear astrophysics  

SciTech Connect

The problem of core-collapse supernovae is used to illustrate the many connections between nuclear astrophysics and the problems nuclear physicists study in terrestrial laboratories. Efforts to better understand the collapse and mantle ejection are also motivated by a variety of interdisciplinary issues in nuclear, particle, and astrophysics, including galactic chemical evolution, neutrino masses and mixing, and stellar cooling by the emission of new particles. The current status of theory and observations is summarized.

Haxton, W.C.

1992-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

Nuclear astrophysics  

SciTech Connect

The problem of core-collapse supernovae is used to illustrate the many connections between nuclear astrophysics and the problems nuclear physicists study in terrestrial laboratories. Efforts to better understand the collapse and mantle ejection are also motivated by a variety of interdisciplinary issues in nuclear, particle, and astrophysics, including galactic chemical evolution, neutrino masses and mixing, and stellar cooling by the emission of new particles. The current status of theory and observations is summarized.

Haxton, W.C.

1992-01-01T23:59:59.000Z

22

Neutrinos  

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

source. Keywords: Neutrino, Oscillations, MiniBooNE, NuMI, off-axis PACS: 14.60.Pq,14.60.Lm,13.15.+g INTRODUCTION The NuMI beamline 1 produces neutrinos for the MINOS experiment...

23

Sensitivity of the IceCube Detector to Astrophysical Sources of High Energy Muon Neutrinos  

E-Print Network (OSTI)

We present the results of a Monte-Carlo study of the sensitivity of the planned IceCube detector to predicted fluxes of muon neutrinos at TeV to PeV energies. A complete simulation of the detector and data analysis is used to study the detector's capability to search for muon neutrinos from sources such as active galaxies and gamma-ray bursts. We study the effective area and the angular resolution of the detector as a function of muon energy and angle of incidence. We present detailed calculations of the sensitivity of the detector to both diffuse and pointlike neutrino emissions, including an assessment of the sensitivity to neutrinos detected in coincidence with gamma-ray burst observations. After three years of datataking, IceCube will have been able to detect a point source flux of E^2*dN/dE = 7*10^-9 cm^-2s^-1GeV at a 5-sigma significance, or, in the absence of a signal, place a 90% c.l. limit at a level E^2*dN/dE = 2*10^-9 cm^-2s^-1GeV. A diffuse E-2 flux would be detectable at a minimum strength of E^2*dN/dE = 1*10^-8 cm^-2s^-1sr^-1GeV. A gamma-ray burst model following the formulation of Waxman and Bahcall would result in a 5-sigma effect after the observation of 200 bursts in coincidence with satellite observations of the gamma-rays.

The IceCube Collaboration; J. Ahrens

2003-05-12T23:59:59.000Z

24

Synoptic Sky Surveys and the Diffuse Supernova Neutrino Background: Removing Astrophysical Uncertainties and Revealing Invisible Supernovae  

E-Print Network (OSTI)

The cumulative (anti)neutrino production from all core-collapse supernovae within our cosmic horizon gives rise to the diffuse supernova neutrino background (DSNB), which is on the verge of detectability. The observed flux depends on supernova physics, but also on the cosmic history of supernova explosions; currently, the cosmic supernova rate introduces a substantial (+/-40%) uncertainty, largely through its absolute normalization. However, a new class of wide-field, repeated-scan (synoptic) optical sky surveys is coming online, and will map the sky in the time domain with unprecedented depth, completeness, and dynamic range. We show that these surveys will obtain the cosmic supernova rate by direct counting, in an unbiased way and with high statistics, and thus will allow for precise predictions of the DSNB. Upcoming sky surveys will substantially reduce the uncertainties in the DSNB source history to an anticipated +/-5% that is dominated by systematics, so that the observed high-energy flux thus will test supernova neutrino physics. The portion of the universe (z invisible supernovae, which may be unseen either due to unexpected large dust obscuration in host galaxies, or because some core-collapse events proceed directly to black hole formation and fail to give an optical outburst.

Amy Lien; Brian D. Fields; John F. Beacom

2010-01-20T23:59:59.000Z

25

Neutrino Mixing  

E-Print Network (OSTI)

In this review we present the main features of the current status of neutrino physics. After a review of the theory of neutrino mixing and oscillations, we discuss the current status of solar and atmospheric neutrino oscillation experiments. We show that the current data can be nicely accommodated in the framework of three-neutrino mixing. We discuss also the problem of the determination of the absolute neutrino mass scale through Tritium beta-decay experiments and astrophysical observations, and the exploration of the Majorana nature of massive neutrinos through neutrinoless double-beta decay experiments. Finally, future prospects are briefly discussed.

Carlo Giunti; Marco Laveder

2004-10-01T23:59:59.000Z

26

Muons and Neutrinos 2007  

E-Print Network (OSTI)

This paper is the written version of the rapporteur talk on Section HE-2, muons and neutrinos, presented at the 30th International Cosmic Ray Conference, Merida, Yucatan, July 11, 2007. Topics include atmospheric muons and neutrinos, solar neutrinos and astrophysical neutrinos as well as calculations and instrumentation related to these topics.

Thomas K. Gaisser

2008-01-29T23:59:59.000Z

27

Nuclear Astrophysics  

E-Print Network (OSTI)

Nuclear physics has a long and productive history of application to astrophysics which continues today. Advances in the accuracy and breadth of astrophysical data and theory drive the need for better experimental and theoretical understanding of the underlying nuclear physics. This paper will review some of the scenarios where nuclear physics plays an important role, including Big Bang Nucleosynthesis, neutrino production by our sun, nucleosynthesis in novae, the creation of elements heavier than iron, and neutron stars. Big-bang nucleosynthesis is concerned with the formation of elements with A nuclear physics inputs required are few-nucleon reaction cross sections. The nucleosynthesis of heavier elements involves a variety of proton-, alpha-, neutron-, and photon-induced reactions, coupled with radioactive decay. The advent of radioactive ion beam facilities has opened an important new avenue for studying these processes, as many involve radioactive species. Nuclear physics also plays an important role in neutron stars: both the nuclear equation of state and cooling processes involving neutrino emission play a very important role. Recent developments and also the interplay between nuclear physics and astrophysics will be highlighted.

Carl R. Brune

2005-02-28T23:59:59.000Z

28

Physics, Computer Science and Mathematics Division. Annual report, January 1-December 31, 1980  

SciTech Connect

Research in the physics, computer science, and mathematics division is described for the year 1980. While the division's major effort remains in high energy particle physics, there is a continually growing program in computer science and applied mathematics. Experimental programs are reported in e/sup +/e/sup -/ annihilation, muon and neutrino reactions at FNAL, search for effects of a right-handed gauge boson, limits on neutrino oscillations from muon-decay neutrinos, strong interaction experiments at FNAL, strong interaction experiments at BNL, particle data center, Barrelet moment analysis of ..pi..N scattering data, astrophysics and astronomy, earth sciences, and instrument development and engineering for high energy physics. In theoretical physics research, studies included particle physics and accelerator physics. Computer science and mathematics research included analytical and numerical methods, information analysis techniques, advanced computer concepts, and environmental and epidemiological studies. (GHT)

Birge, R.W.

1981-12-01T23:59:59.000Z

29

SEARCH FOR TIME-INDEPENDENT NEUTRINO EMISSION FROM ASTROPHYSICAL SOURCES WITH 3 yr OF IceCube DATA  

E-Print Network (OSTI)

of Oxford, 1 Keble Road, Oxford OX1 3NP, UK Received 2013 July 25; accepted 2013 October 8; published 2013 December 3 ABSTRACT We present the results of a search for neutrino point sources using the IceCube data collected between 2008 April and 2011 May...-called first-order Fermi acceleration. Candidate sources of Galactic CRs are supernova explosions and their remnant shocks, which may accelerate charged particles via diffuse shock acceleration up to the CR knee (?3 1015 eV). At higher energies...

Aartsen, M. G.; Besson, David Zeke

2013-12-03T23:59:59.000Z

30

Electromagnetic neutrino: a short review  

E-Print Network (OSTI)

A short review on selected issues related to the problem of neutrino electromagnetic properties is given. After a flash look at the theoretical basis of neutrino electromagnetic form factors, constraints on neutrino magnetic moments and electric millicharge from terrestrial experiments and astrophysical observations are discussed. We also focus on some recent studies of the problem and on perspectives.

Alexander I. Studenikin

2014-11-09T23:59:59.000Z

31

Solar Neutrinos: Models, Observations, and New Opportunities  

E-Print Network (OSTI)

I discuss the development and resolution of the solar neutrino problem, as well as opportunities now open to us to extend our knowledge of main-sequence stellar evolution and neutrino astrophysics.

W. C. Haxton

2007-10-11T23:59:59.000Z

32

Ultra- and extremely high energy neutrino astronomy  

E-Print Network (OSTI)

Scientific motivations for ultra- and extremely high energy neutrino astronomy are considered. Sources and expected fluxes of EHE/UHE neutrinos are briefly discussed. Operating and planned experiments on astrophysical neutrino detection are reviewed focusing on deep underwater/ice Cherenkov neutrino telescopes.

I. Sokalski

2005-01-05T23:59:59.000Z

33

Particle Astrophysics  

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

Particle Astrophysics Particle Astrophysics Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664 Email Bruce Carlsten...

34

ANTARES deep sea neutrino telescope results  

SciTech Connect

The ANTARES experiment is currently the largest underwater neutrino telescope in the Northern Hemisphere. It is taking high quality data since 2007. Its main scientific goal is to search for high energy neutrinos that are expected from the acceleration of cosmic rays from astrophysical sources. This contribution reviews the status of the detector and presents several analyses carried out on atmospheric muons and neutrinos. For example it shows the results from the measurement of atmospheric muon neutrino spectrum and of atmospheric neutrino oscillation parameters as well as searches for neutrinos from steady cosmic point-like sources, for neutrinos from gamma ray bursts and for relativistic magnetic monopoles.

Mangano, Salvatore [IFIC - Instituto de Fsica Corpuscular, Edificio Institutos de Investigatin, 46071 Valencia (Spain); Collaboration: ANTARES Collaboration

2014-06-24T23:59:59.000Z

35

Probing Neutrino Dark Energy with Extremely High-Energy Cosmic Neutrinos  

E-Print Network (OSTI)

Recently, a new non-Standard Model neutrino interaction mediated by a light scalar field was proposed, which renders the big-bang relic neutrinos of the cosmic neutrino background a natural dark energy candidate, the so-called Neutrino Dark Energy. As a further consequence of this interaction, the neutrino masses become functions of the neutrino energy densities and are thus promoted to dynamical, time/redshift dependent quantities. Such a possible neutrino mass variation introduces a redshift dependence into the resonance energies associated with the annihilation of extremely high-energy cosmic neutrinos on relic anti-neutrinos and vice versa into Z-bosons. In general, this annihilation process is expected to lead to sizeable absorption dips in the spectra to be observed on earth by neutrino observatories operating in the relevant energy region above 10^13 GeV. In our analysis, we contrast the characteristic absorption features produced by constant and varying neutrino masses, including all thermal background effects caused by the relic neutrino motion. We firstly consider neutrinos from astrophysical sources and secondly neutrinos originating from the decomposition of topological defects using the appropriate fragmentation functions. On the one hand, independent of the nature of neutrino masses, our results illustrate the discovery potential for the cosmic neutrino background by means of relic neutrino absorption spectroscopy. On the other hand, they allow to estimate the prospects for testing its possible interpretation as source of Neutrino Dark Energy within the next decade by the neutrino observatories ANITA and LOFAR.

Andreas Ringwald; Lily Schrempp

2006-06-13T23:59:59.000Z

36

Raymond Davis Jr., Solar Neutrinos, and the Solar Neutrino Problems  

Office of Scientific and Technical Information (OSTI)

Raymond Davis, Jr., Solar Neutrinos, Raymond Davis, Jr., Solar Neutrinos, and the Solar Neutrino Problem Resources with Additional Information Raymond Davis, Jr. Photo Courtesy of Brookhaven National Laboratory (BNL) Raymond Davis, Jr., who conducted research in the Chemistry Department at Brookhaven National Laboratory (BNL) from 1948 through 1984, was awarded the 2002 Nobel Prize in Physics "for pioneering contributions to astrophysics, in particular for the detection of cosmic neutrinos." Dr. Davis is also a recipient of the 2003 Fermi Award. He was the first scientist to detect solar neutrinos, ghostlike particles produced in the nuclear reactions that power the sun. "Neutrinos are fascinating particles, so tiny and fast that they can pass straight through everything, even the earth itself, without even slowing down," said Davis. "When I began my work, I was intrigued by the idea of learning something new. The interesting thing about doing new experiments is that you never know what the answer is going to be!"

37

Implication of neutrino backgrounds on the reach of next generation dark matter direct detection experiments  

E-Print Network (OSTI)

As direct dark matter experiments continue to increase in size, they will become sensitive to neutrinos from astrophysical sources. For experiments that do not have directional sensitivity, coherent neutrino scattering ...

Strigari, L.

38

TeV Particle Astrophysics II: Summary comments  

E-Print Network (OSTI)

A unifying theme of this conference was the use of different approaches to understand astrophysical sources of energetic particles in the TeV range and above. In this summary I review how gamma-ray astronomy, neutrino astronomy and (to some extent) gravitational wave astronomy provide complementary avenues to understanding the origin and role of high-energy particles in energetic astrophysical sources.

Thomas K. Gaisser

2006-12-11T23:59:59.000Z

39

Physics division annual report 2006.  

SciTech Connect

This report highlights the activities of the Physics Division of Argonne National Laboratory in 2006. The Division's programs include the operation as a national user facility of ATLAS, the Argonne Tandem Linear Accelerator System, research in nuclear structure and reactions, nuclear astrophysics, nuclear theory, investigations in medium-energy nuclear physics as well as research and development in accelerator technology. The mission of nuclear physics is to understand the origin, evolution and structure of baryonic matter in the universe--the core of matter, the fuel of stars, and the basic constituent of life itself. The Division's research focuses on innovative new ways to address this mission.

Glover, J.; Physics

2008-02-28T23:59:59.000Z

40

Progress in the physics of massive neutrinos  

E-Print Network (OSTI)

The current status of the physics of massive neutrinos is reviewed with a forward-looking emphasis. The article begins with the general phenomenology of neutrino oscillations in vacuum and matter and documents the experimental evidence for oscillations of solar, reactor, atmospheric and accelerator neutrinos. Both active and sterile oscillation possibilities are considered. The impact of cosmology (BBN, CMB, leptogenesis) and astrophysics (supernovae, highest energy cosmic rays) on neutrino observables and vice versa, is evaluated. The predictions of grand unified, radiative and other models of neutrino mass are discussed. Ways of determining the unknown parameters of three-neutrino oscillations are assessed, taking into account eight-fold degeneracies in parameters that yield the same oscillation probabilities, as well as ways to determine the absolute neutrino mass scale (from beta-decay, neutrinoless double-beta decay, large scale structure and Z-bursts). Critical unknowns at present are the amplitude of \

V. Barger; D. Marfatia; K. Whisnant

2003-09-16T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

Astrophysical Jets  

SciTech Connect

Many astrophysical sources - especially those powered by release of gravitational energy - are associated with an outflow of material, generally taking place along the axis of symmetry of the system. In the most extreme cases, the outflow is accelerated to relativistic speeds; such a phenomenon is known as an astrophysical jet. When a relativistic jet points close to our line of sight, the observed radiation is strongly Doppler-boosted. Most spectacular cases of astrophysical jets are those produced by active galactic nuclei, where the measured spectrum - presumably dominated by the radiation from the jet - reaches up to the multi-GeV range. Our knowledge of these jets is limited: we don't fully understand how are they formed, collimated, and accelerated, and what is the process of conversion of the bulk energy of the jet into radiation. We anticipate that the increased sensitivity of GLAST will provide us with spectacular data yielding new insights as to their origin and structure.

Madejski, Grzegorz (SLAC) [SLAC

2006-05-01T23:59:59.000Z

42

Argonne Physics Division - Theory Group  

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

Division Seminar: R-150 @ 3:30pm Division Seminar: R-150 @ 3:30pm 14 April 2011 Stefano Gandolfi Los Alamos National Laboratory stefano@lanl.gov Quantum Monte Carlo Study of Strongly Correlated Fermions: Neutron Matter, Neutron Stars and Cold Atoms Division Seminar: R-150 @ 3:30pm 31 March 2011 Lucas Platter Chalmers University of Technology, Göteborg platter@chalmers.se Effective Field Theories for Nuclear Systems Division Seminar: R-150 @ 3:30pm 17 February 2011 Alexandros Gezerlis University of Washington gezerlis@uw.edu Bridging the Gap: Fermions in Nuclear Structure and Nuclear Astrophysics Special Day: Tuesday 15 February 2011 Louis H. Kauffman UIC kauffman@uic.edu Topological Quantum Information and the Jones Polynomial Division Seminar: R-150 @ 3:30pm 10 February 2011 JoaquÃ-n Drut

43

Masatoshi Koshiba and Cosmic Neutrinos  

Office of Scientific and Technical Information (OSTI)

Masatoshi Koshiba and Cosmic Neutrinos Masatoshi Koshiba and Cosmic Neutrinos Resources with Additional Information Masatoshi Koshiba Courtesy of Sebastian Brandt 'The 2002 Nobel Prize in Physics has been awarded to ... Masatoshi Koshiba of the International Center for Elementary Particle Physics at the University of Tokyo in Japan, ... "for pioneering contributions to astrophysics, in particular for the detection of cosmic neutrinos." ... Neutrinos are important in astrophysics since they might have played a considerable role in shaping early galaxies; they are the form of energy coming directly from the solar core; and they account for the largest share of energy released during supernova explosions....'1 ...Koshiba, professor emeritus at the University of Tokyo, received his doctorate from the University of Rochester in [1955]. This year [2000], he is the co-recipient of the Wolf Prize in Physics, considered second only to the Nobel Prize in prestige, for his discovery that neutrinos have mass. Neutrinos are tiny particles smaller than atoms, and Koshiba's discovery is being hailed for its ramifications in the study of astronomical objects and the fundamental properties of matter, helping scientists to understand the birth of the universe. Koshiba started his career as a research associate at the University of Rochester, then went on to teach at the University of Tokyo." 2

44

Atmospheric Neutrinos  

E-Print Network (OSTI)

This paper is a brief overview of the theory and experimental data of atmospheric neutrino production at the fiftieth anniversary of the experimental discovery of neutrinos.

Thomas K. Gaisser

2006-12-11T23:59:59.000Z

45

Accelerator Division  

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

Science Science Particle Physics Neutrinos Fermilab and the LHC Dark matter and dark energy More fundamental particles and forces Theory Scientific Computing Research &...

46

Stellar Astrophysics Requirements NERSC Forecast  

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

Requirements for Requirements for m461:Stellar Explosions in Three Dimensions Tomek Plewa (Florida State University) + 3 graduate students, Artur Gawryszczak (Warsaw), Konstantinos Kifonidis (Munich), Andrzej Odrzywolek (Cracow), Ju Zhang (FIT), Andrey Zhiglo (Kharkov) 1. m461: Stellar Explosions in Three Dimensions * Summarize your projects and expected scientific objectives through 2014 * Modeling and simulations of transient phenomena in stellar astrophysics driven by either radiation or thermonuclear processes * Numerical solution of a coupled system of PDEs and ODEs * Tame nonlinearity! * Our goal is to ... * Explain observed properties of exploding stellar objects * Present focus is ... * Neutrino-driven core-collapse supernova explosions * In the next 3 years we expect to ...

47

Neutrino Physics  

DOE R&D Accomplishments (OSTI)

The prediction and verification of the neutrino are reviewed, together with the V A theory for its interactions (particularly the difficulties with the apparent existence of two neutrinos and the high energy cross section). The Brookhaven experiment confirming the existence of two neutrinos and the cross section increase with momentum is then described, and future neutrino experiments are considered. (D.C.W.)

Lederman, L. M.

1963-01-09T23:59:59.000Z

48

Neutrino oscillations  

Science Journals Connector (OSTI)

...the energy released in the nuclear transition. If neutrinos have...momentum p is produced in a nuclear b-decay. At time t = 0 the...neutrino oscillations in x 3 only vacuum oscillations were considered...of muon neutrinos from the accelerator complex at Fermilab. The neutrinos...

2002-01-01T23:59:59.000Z

49

Solar Neutrino Fluxes Using The Exponential S-Factor  

SciTech Connect

Recently we propose an exponential form for the astrophysical S-factor. This form produces about 20% more solar 3He production through the 3He-3He reaction. In this note, we investigate the effects on the 7Be and 8B neutrino productions since the neutrino fluxes depend on the 3He abundance.

Kassim, Hasan Abu; Jalil, Ithnin Abdul; Yusof, Norhasliza [Department of Physics, University of Malaya, 50603 Kuala Lumpur (Malaysia)

2006-07-12T23:59:59.000Z

50

High Energy Neutrino Telescopes  

E-Print Network (OSTI)

This paper presents a review of the history, motivation and current status of high energy neutrino telescopes. Many years after these detectors were first conceived, the operation of kilometer-cubed scale detectors is finally on the horizon at both the South Pole and in the Mediterranean Sea. These new detectors will perhaps provide us the first view of high energy astrophysical objects with a new messenger particle and provide us with our first real glimpse of the distant universe at energies above those accessible by gamma-ray instruments. Some of the topics that can be addressed by these new instruments include the origin of cosmic rays, the nature of dark matter, and the mechanisms at work in high energy astrophysical objects such as gamma-ray bursts, active galactic nuclei, pulsar wind nebula and supernova remnants.

Hoffman, K D

2008-01-01T23:59:59.000Z

51

High Energy Neutrino Telescopes  

E-Print Network (OSTI)

This paper presents a review of the history, motivation and current status of high energy neutrino telescopes. Many years after these detectors were first conceived, the operation of kilometer-cubed scale detectors is finally on the horizon at both the South Pole and in the Mediterranean Sea. These new detectors will perhaps provide us the first view of high energy astrophysical objects with a new messenger particle and provide us with our first real glimpse of the distant universe at energies above those accessible by gamma-ray instruments. Some of the topics that can be addressed by these new instruments include the origin of cosmic rays, the nature of dark matter, and the mechanisms at work in high energy astrophysical objects such as gamma-ray bursts, active galactic nuclei, pulsar wind nebula and supernova remnants.

K. D. Hoffman

2008-12-18T23:59:59.000Z

52

Constraints on neutrino-nucleon interactions at energies of 1EeV with the IceCube Neutrino Observatory  

Science Journals Connector (OSTI)

A search for extremely high energy cosmic neutrinos has been carried out with the IceCube Neutrino Observatory. The main signals in the search are neutrino-induced energetic charged leptons and their rate depends on the neutrino-nucleon cross section. The upper limit on the neutrino flux has implications for possible new physics beyond the standard model such as the extra space-time dimension scenarios which lead to a cross section much higher than the standard particle physics prediction. In this study we constrain the neutrino-nucleon cross section at energies beyond 109??GeV with the IceCube observation. The constraints are obtained as a function of the extraterrestrial neutrino flux in the relevant energy range, which accounts for the astrophysical uncertainty of neutrino production models.

Shigeru Yoshida

2010-11-22T23:59:59.000Z

53

Nuclear Science Division: 1993 Annual report  

SciTech Connect

This report describes the activities of the Nuclear Science Division for the 1993 calendar year. This was another significant year in the history of the Division with many interesting and important accomplishments. Activities for the following programs are covered here: (1) nuclear structure and reactions program; (2) the Institute for Nuclear and Particle Astrophysics; (3) relativistic nuclear collisions program; (4) nuclear theory program; (5) nuclear data evaluation program, isotope project; and (6) 88-inch cyclotron operations.

Myers, W.D. [ed.

1994-06-01T23:59:59.000Z

54

Neutrino Superbeams  

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

Upgraded conventional neutrino beams: Neutrino superbeams Upgraded conventional neutrino beams: Neutrino superbeams The capabilities of greatly upgraded conventional neutrino beams and the comparison with neutrino factories is under study. This page collects together some useful working information-- and at the bottom you can find links to studies that have already been done! GROUP REPORT: Oscillation Measurements with Upgraded Conventional Neutrino Beams V. Barger et al., hep-ex/0103052 (FERMILAB-FN-703), Addendum to Report FN-692 to the Fermilab Directorate, March 5, 2001. MI upgrade limitations Conf-97-199, W. Chou NUMI low energy beam with L = 732 km uoscillation signals for point IA1 (LMA scenario) but with sin**2 2theta(13) = 0.01, from Steve Geer. NUMI medium energy beam with L = 2800 km oscillation signals for

55

Physics Division activities report, 1986--1987  

SciTech Connect

This report summarizes the research activities of the Physics Division for the years 1986 and 1987. Areas of research discussed in this paper are: research on e/sup +/e/sup /minus// interactions; research on p/bar p/ interactions; experiment at TRIUMF; double beta decay; high energy astrophysics; interdisciplinary research; and advanced technology development and the SSC.

Not Available

1987-01-01T23:59:59.000Z

56

Solar Neutrinos: Status and Prospects  

E-Print Network (OSTI)

We describe the current status of solar neutrino measurements and of the theory -- both neutrino physics and solar astrophysics -- employed in interpreting measurements. Important recent developments include Super-Kamiokande's determination of the neutrino-electron elastic scattering rate for 8B neutrinos to 3%; the latest SNO global analysis in which the inclusion of low-energy data from SNO I and II significantly narrowed the range of allowed values for the neutrino mixing angle theta12; Borexino results for both the 7Be and pep neutrino fluxes, the first direct measurements constraining the rate of ppI and ppII burning in the Sun; global reanalyses of solar neutrino data that take into account new reactor results on theta13; a new decadal evaluation of the nuclear physics of the pp chain and CNO cycle defining best values and uncertainties in the nuclear microphysics input to solar models; recognition of an emerging discrepancy between two tests of solar metallicity, helioseismological mappings of the sound speed in the solar interior, and analyses of the metal photoabsorption lines based on our best current description of the Sun's photosphere; a new round of standard solar model calculations optimized to agree either with helioseismology or with the new photospheric analysis; and, motivated by the solar abundance problem, the development of nonstandard, accreting solar models, in order to investigate possible consequences of the metal segregation that occurred in the proto-solar disk. We review this progress and describe how new experiments such as SNO+ could help us further exploit neutrinos as a unique probe of stellar interiors.

W. C. Haxton; R. G. Hamish Robertson; Aldo M. Serenelli

2012-08-28T23:59:59.000Z

57

Solar Neutrinos  

DOE R&D Accomplishments (OSTI)

The prospect of studying the solar energy generation process directly by observing the solar neutrino radiation has been discussed for many years. The main difficulty with this approach is that the sun emits predominantly low energy neutrinos, and detectors for observing low fluxes of low energy neutrinos have not been developed. However, experimental techniques have been developed for observing neutrinos, and one can foresee that in the near future these techniques will be improved sufficiently in sensitivity to observe solar neutrinos. At the present several experiments are being designed and hopefully will be operating in the next year or so. We will discuss an experiment based upon a neutrino capture reaction that is the inverse of the electron-capture radioactive decay of argon-37. The method depends upon exposing a large volume of a chlorine compound, removing the radioactive argon-37 and observing the characteristic decay in a small low-level counter.

Davis, R. Jr.; Harmer, D. S.

1964-12-00T23:59:59.000Z

58

Science and Technology of BOREXINO: A Real Time Detector for Low Energy Solar Neutrinos SOLAR NEUTRINOS  

E-Print Network (OSTI)

BOREXINO, a real-time device for low energy neutrino spectroscopy is nearing completion of construction in the underground laboratories at Gran Sasso, Italy (LNGS). The experiment's goal is the direct measurement of the flux of 7Be solar neutrinos of all flavors via neutrino-electron scattering in an ultra-pure scintillation liquid. Seeded by a series of innovations which were brought to fruition by large scale operation of a 4-ton test detector at LNGS, a new technology has been developed for BOREXINO. It enables sub-MeV solar neutrino spectroscopy for the first time. This paper describes the design of BOREXINO, the various facilities essential to its operation, its spectroscopic and background suppression capabilities and a prognosis of the impact of its results towards resolving the solar neutrino problem. BOREXINO will also address several other frontier questions in particle physics, astrophysics and geophysics.

Borexino Collaboration; G. Alimonti

2000-12-11T23:59:59.000Z

59

Booster Neutrino Experiment - About Neutrinos  

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

Adventure An interactive tour of quarks, neutrinos, anti-matter, extra dimensions, dark matter, accelerators, and particle detectors. Developed by the Particle Data Group....

60

High Energy Neutrino Signals from the Epoch of Reionization  

SciTech Connect

In this paper we perform a new estimate of the high energy neutrinos expected from GRBs associated with the first generation of stars in light of new models and constraints on the epoch of reionization and a more detailed evaluation of the neutrino emission yields. We also compare the diffuse high energy neutrino background from Population III stars with the one from ''ordinary stars'' (Population II), as estimated consistently within the same cosmological and astrophysical assumptions. In disagreement with previous literature, we find that high energy neutrinos from Population III stars will not be observable with current or near future neutrino telescopes, falling below both IceCube sensitivity and atmospheric neutrino background under the most extreme assumptions for the GRB rate. This rules them out as a viable diagnostic tool for these still elusive metal-free stars.

Iocco, F.; Murase, K.; Nagataki, S.; Serpico, P.D.

2007-07-06T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

Absolute Values of Neutrino Masses: Status and Prospects  

E-Print Network (OSTI)

Compelling evidences in favor of neutrino masses and mixing obtained in the last years in Super-Kamiokande, SNO, KamLAND and other neutrino experiments made the physics of massive and mixed neutrinos a frontier field of research in particle physics and astrophysics. There are many open problems in this new field. In this review we consider the problem of the absolute values of neutrino masses, which apparently is the most difficult one from the experimental point of view. We discuss the present limits and the future prospects of beta-decay neutrino mass measurements and neutrinoless double-beta decay. We consider the important problem of the calculation of nuclear matrix elements of neutrinoless double-beta decay and discuss the possibility to check the results of different model calculations of the nuclear matrix elements through their comparison with the experimental data. We discuss the upper bound of the total mass of neutrinos that was obtained recently from the data of the 2dF Galaxy Redshift Survey and other cosmological data and we discuss future prospects of the cosmological measurements of the total mass of neutrinos. We discuss also the possibility to obtain information on neutrino masses from the observation of the ultra high-energy cosmic rays (beyond the GZK cutoff). Finally, we review the main aspects of the physics of core-collapse supernovae, the limits on the absolute values of neutrino masses from the observation of SN1987A neutrinos and the future prospects of supernova neutrino detection.

S. M. Bilenky; C. Giunti; J. A. Grifols; E. Masso

2003-03-27T23:59:59.000Z

62

Planetary influence on the young Sun's evolution: the solar neutrino probe  

Science Journals Connector (OSTI)

......particular, we found that a solar model with a significant...30cent, as suggested by solar twins observations...SNO, Borexino and low energy neutrino astrophysics...determination of such solar neutrino fluxes, leading...current version of the LENA project the promoters expect......

Ildio Lopes; Joseph Silk

2013-01-01T23:59:59.000Z

63

Double Beta Decay, Majorana Neutrinos, and Neutrino Mass  

E-Print Network (OSTI)

The theoretical and experimental issues relevant to neutrinoless double-beta decay are reviewed. The impact that a direct observation of this exotic process would have on elementary particle physics, nuclear physics, astrophysics and cosmology is profound. Now that neutrinos are known to have mass and experiments are becoming more sensitive, even the non-observation of neutrinoless double-beta decay will be useful. If the process is actually observed, we will immediately learn much about the neutrino. The status and discovery potential of proposed experiments are reviewed in this context, with significant emphasis on proposals favored by recent panel reviews. The importance of and challenges in the calculation of nuclear matrix elements that govern the decay are considered in detail. The increasing sensitivity of experiments and improvements in nuclear theory make the future exciting for this field at the interface of nuclear and particle physics.

Frank T. Avignone III; Steven R. Elliott; Jonathan Engel

2007-08-07T23:59:59.000Z

64

Neutrino Burst from Supernovae and Neutrino Oscillation  

Science Journals Connector (OSTI)

......solar, atmospheric, reactor neutrinos and so on...anti-neutrinos from nuclear reactors, spal- lation products...atmospheric, and reactor neutrinos. (Since...is expected that next generation of water Cherenkov detectors......

Katsuhiko Sato; Keitaro Takahashi; Shin'ichiro Ando

2002-03-01T23:59:59.000Z

65

Neutrino Theory  

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

operators in the Lagrangian (Majorana mass terms), or both. The ongoing neutrinoless double-beta decay searches may be able to shine light on the matter. But the neutrino sector...

66

EIA - Census Division List  

Gasoline and Diesel Fuel Update (EIA)

Supplemental Tables > Census Division List Supplemental Tables > Census Division List Supplemental Tables to the Annual Energy Outlook 2010 Division 1 Division 2 Division 3 Division 4 Division 5 New England Middle Atlantic East North Central West North Central South Atlantic Connecticut New Jersey Illinois Iowa Delaware Maine New York Indiana Kansas District of Columbia Massachusetts Pennsylvania Michigan Minnesota Florida New Hampshire Ohio Missouri Georgia Rhode Island Wisconsin Nebraska Maryland Vermont North Dakota North Carolina South Dakota South Carolina Virginia West Virginia Division 6 Division 7 Division 8 Division 9 East South Central West South Central Mountain Pacific Alabama Arkansas Arizona Alaska Kentucky Louisiana Colorado California

67

Lamp Divisions  

Office of Legacy Management (LM)

--- --- /A;; i :' r%i;in~house ilEc;' i:Z3:~cra:ion Lamp Divisions , _.. (I +i. 0 :,,,rg. . I . . -= i?e p/q! qe)-' &se pw E.rcale?l iev, Je!sey 07m March 20, 1 gs? ::r . J. A. Jones I ti. 5. Muclear Regulatory Commission .> = ..- haterials Licensing Branch -s - ,.I, - - Division of Fuel Cycle and hateri al Safety LY. , $2 - _ . ' -' . 3 _- - Yeshington, C. C. 2@555 - :_ :--, =-- -- .-?J -.: y...., : :- 7 Dear Mr. Jones : y-- --, ? . *I 2=15 2 r; X -P The following is our final report of the decontamination efZor?s takz in our Bui Iding 7 basement and wi 11 also serve to update our report i& November 12, 1980. As stated in NRC' s report of December 22, 1983, two closeout inspect ions were conducted by your King of Prussia off i ce on November 21 and December 2,

68

References to Astrophysics Papers  

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

References to Astrophysics Papers References to Astrophysics Papers References to Astrophysics Papers Edward Tufte claims the most common number of references to scientific papers is zero. My five papers in astrophysics published from 1992 to 1996 continue to receive citations. Major ones are listed below. Mineo, S.; Rappaport, S.; Steinhorn, B.; Levine, A.; Gilfanov, M.; Pooley, D., 2013, The Astrophysical Journal, Volume 771, Issue 2, article id. 133, 12 pp. Spatially Resolved Star Formation Image and the Ultraluminous X-Ray Source Population in NGC 2207/IC 2163 Junqueira, T. C.; Lépine, J. R. D.; Braga, C. A. S.; Barros, D. A 2013, Astronomy & Astrophysics, Volume 550, id.A91. A new model for gravitational potential perturbations in disks of spiral galaxies. An application to our Galaxy.

69

Astron. Astrophys. 315, L60L63 (1996) ASTROPHYSICS  

E-Print Network (OSTI)

Physik, Postfach 1603, D-85740 Garching, Germany 3 ISO Science Operations Centre, Astrophysics Division succesfully transferred to the in orbit situation. The achieved accuracies for the grating sections- bration sources were used. Two for each grating section, posi- tioned next to the entrance apertures

Spoon, Henrik

70

Neutrinos at high energy accelerators  

E-Print Network (OSTI)

PREAMBLE, BRIEF HISTORY AND PRELIMINARIES, QUICK REVIEW OF BASIC NEUTRINO PROPERTIES, CHARGED CURRENT NEUTRINO PROCESSES, NEUTRAL CURRENT NEUTRINO PROCESSES, VERY HEAVY NEUTRINOS, CONCLUDING SUMMARY

Probir Roy

1993-08-02T23:59:59.000Z

71

Magnetic Reconnection in Astrophysical and  

E-Print Network (OSTI)

Magnetic Reconnection in Astrophysical and Laboratory Plasmas Ellen G. Zweibel1 and Masaaki Yamada2 astrophysics, magnetic fields, magnetic reconnection Abstract Magnetic reconnection is a topological rearrangement of magnetic field that converts magnetic energy to plasma energy. Astrophysical flares, from

72

Census Division List  

Gasoline and Diesel Fuel Update (EIA)

Supplement Tables to the Annual Energy Outlook 2003 Supplement Tables to the Annual Energy Outlook 2003 Census Division List Division 1 Division 2 Division 3 Division 4 Division 5 New England Middle Atlantic East North Central West North Central South Atlantic Connecticut New Jersey Illinois Iowa Delaware Maine New York Indiana Kansas District of Columbia Massachusetts Pennsylvania Michigan Minnesota Florida New Hampshire Ohio Missouri Georgia Rhode Island Wisconsin Nebraska Maryland Vermont North Dakota North Carolina South Dakota South Carolina Virginia West Virginia Division 6 Division 7 Division 8 Division 9 East South Central West South Central Mountain Pacific Alabama Arkansas Arizona Alaska Kentucky Louisiana Colorado California Mississippi Oklahoma Idaho Hawaii

73

Census Division List  

Gasoline and Diesel Fuel Update (EIA)

5 5 Census Division List Division 1 Division 2 Division 3 Division 4 Division 5 New England Middle Atlantic East North Central West North Central South Atlantic Connecticut New Jersey Illinois Iowa Delaware Maine New York Indiana Kansas District of Columbia Massachusetts Pennsylvania Michigan Minnesota Florida New Hampshire Ohio Missouri Georgia Rhode Island Wisconsin Nebraska Maryland Vermont North Dakota North Carolina South Dakota South Carolina Virginia West Virginia Division 6 Division 7 Division 8 Division 9 East South Central West South Central Mountain Pacific Alabama Arkansas Arizona Alaska Kentucky Louisiana Colorado California Mississippi Oklahoma Idaho Hawaii Tennessee Texas Montana Oregon

74

Photohadronic origin of $\\gamma$-ray BL Lac emission: implications for IceCube neutrinos  

E-Print Network (OSTI)

The recent IceCube discovery of 0.1-1 PeV neutrinos of astrophysical origin opens up a new era for high-energy astrophysics. Although there are various astrophysical candidate sources, a firm association of the detected neutrinos with one (or more) of them is still lacking. A recent analysis of plausible astrophysical counterparts within the error circles of IceCube events showed that likely counterparts for nine of the IceCube neutrinos include mostly BL Lacs, among which Mrk 421. Motivated by this result and a previous independent analysis on the neutrino emission from Mrk 421, we test the BL Lac-neutrino connection in the context of a specific theoretical model for BL Lac emission. We model the spectral energy distribution (SED) of the BL Lacs selected as counterparts of the IceCube neutrinos using a one-zone leptohadronic model and mostly nearly simultaneous data. The neutrino flux for each BL Lac is self-consistently calculated, using photon and proton distributions specifically derived for every individ...

Petropoulou, Maria; Padovani, Paolo; Mastichiadis, Apostolos; Resconi, Elisa

2015-01-01T23:59:59.000Z

75

Astrophysical Origins of the Highest Energy Cosmic Rays  

E-Print Network (OSTI)

Theoretical aspects of potential astrophysical sources of the highest energy cosmic rays are discussed, including their energy budget and some issues on particle escape and propagation. After briefly addressing AGN jets and GRBs, we highlight the possibility of heavy nuclei originating from cluster accretion shocks. The importance of X-ray and gamma-ray signatures in addition to neutrinos as diagnostic tools for source identification is emphasized.

Susumu Inoue

2007-02-01T23:59:59.000Z

76

J-PARC Correctors | Superconducting Magnet Division  

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

J-PARC Correctors J-PARC Correctors Physics Japan is constructing a 50 Gev, high intensity proton accelerator at a site near the Japanese high energy research laboratory, KEK. The project is called J-PARC (Japan Proton Accelerator Research Complex). The site is at Tokai and is part of the Japanese Atomic Energy Research Institute (JAERI). KEK and JAERI are jointly responsible for its construction. J-PARC will serve many uses. One of the uses will be to produce neutrinos that will be directed toward a detector located in Kamiokande, Japan. The neutrinos will be produced when protons are extracted from J-PARC and are directed by magnets in a beam line to strike a target. Further information about the neutrino experiment is available. KEK and the BNL Superconducting Magnet Division are working together to

77

Solar Neutrinos and the Decaying Neutrino Hypothesis  

E-Print Network (OSTI)

We explore, mostly using data from solar neutrino experiments, the hypothesis that the neutrino mass eigenstates are unstable. We find that, by combining $^8$B solar neutrino data with those on $^7$Be and lower-energy solar neutrinos, one obtains a mostly model-independent bound on both the $\

Jeffrey M. Berryman; Andre de Gouvea; Daniel Hernandez

2014-11-02T23:59:59.000Z

78

Solar Neutrinos and the Decaying Neutrino Hypothesis  

E-Print Network (OSTI)

We explore, mostly using data from solar neutrino experiments, the hypothesis that the neutrino mass eigenstates are unstable. We find that, by combining $^8$B solar neutrino data with those on $^7$Be and lower-energy solar neutrinos, one obtains a mostly model-independent bound on both the $\

Berryman, Jeffrey M; Hernandez, Daniel

2014-01-01T23:59:59.000Z

79

Cosmic neutrino background absorption line in the neutrino spectrum at IceCube  

Science Journals Connector (OSTI)

The IceCube experiment has recently reported a high energy neutrino spectrum between the TeV and PeV scales. The observed neutrino flux can be as a whole well fitted by a simple power law of the neutrino energy E?, E???? (???2). As a notable feature of the spectrum, however, it has a gap between 500TeV and 1PeV. Although the existence of the gap in the neutrino spectrum is not statistically significant at this point, it is very enticing to ask whether it might hint at some physics beyond the Standard Model. In this paper, we investigate a possibility that the gap can be interpreted as an absorption line in the power-law spectrum by the cosmic neutrino background through a new resonance in the MeV range. We also show that the absorption line has rich information about not only the MeV scale new particle but also the neutrino masses as well as the distances to the astrophysical sources of the high energy neutrinos. Viable models to achieve this possibility are also discussed.

Masahiro Ibe and Kunio Kaneta

2014-09-24T23:59:59.000Z

80

Solar Neutrinos  

E-Print Network (OSTI)

Experimental work with solar neutrinos has illuminated the properties of neutrinos and tested models of how the sun produces its energy. Three experiments continue to take data, and at least seven are in various stages of planning or construction. In this review, the current experimental status is summarized, and future directions explored with a focus on the effects of a non-zero theta-13 and the interesting possibility of directly testing the luminosity constraint. Such a confrontation at the few-percent level would provide a prediction of the solar irradiance tens of thousands of years in the future for comparison with the present-day irradiance. A model-independent analysis of existing low-energy data shows good agreement between the neutrino and electromagnetic luminosities at the +/- 20 % level.

R. G. H. Robertson

2006-02-05T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

Nuclear Astrophysics Animations from the Nuclear Astrophysics Group at Clemson University  

DOE Data Explorer (OSTI)

The animations are organized into three sections. The r-Process Movies demonstrate r-Process network calculations from the paper "Neutrino Capture and the R-Process" Meyer, McLaughlin, and Fuller, Phys. Rev. C, 58, 3696-3710 (1998). The Alpha-Rich Freezeout Movies are related to the reference: Standard alpha-rich freezeout calculation from The, Clayton, Jin, and Meyer 1998, Astrophysical Journal, "Reaction Rates Governing the Synthesis of 44Ti" At the current writing, the category for Low Metallicity s-Process Movies has only one item called n, p, 13C, 14N, 54Fe, and 88Sr Time evolution in convective zone.

Meyer, Bradley; The, Lih-Sin

82

EIA - Census Division List  

Gasoline and Diesel Fuel Update (EIA)

9 9 Division 1 Division 2 Division 3 Division 4 Division 5 New England Middle Atlantic East North Central West North Central South Atlantic Connecticut New Jersey Illinois Iowa Delaware Maine New York Indiana Kansas District of Columbia Massachusetts Pennsylvania Michigan Minnesota Florida New Hampshire Ohio Missouri Georgia Rhode Island Wisconsin Nebraska Maryland Vermont North Dakota North Carolina South Dakota South Carolina Virginia West Virginia Division 6 Division 7 Division 8 Division 9 East South Central West South Central Mountain Pacific Alabama Arkansas Arizona Alaska Kentucky Louisiana Colorado California Mississippi Oklahoma Idaho Hawaii Tennessee Texas Montana Oregon

83

Colliding neutrino beams  

E-Print Network (OSTI)

From several neutrino oscillation experiments, we understand now that neutrinos have mass. However, we really don't know what mechanism is responsible for producing this neutrino mass. Current or planned neutrino experiments utilize neutrino beams and long-baseline detectors to explore flavor mixing but do not address the question of the origin of neutrino mass. In order to answer that question, neutrino interactions need to be explored at much higher energies. This paper outlines a program to explore neutrinos and their interactions with various particles through a series of experiments involving colliding neutrino beams.

Reinhard Schwienhorst

2007-11-08T23:59:59.000Z

84

Neutrino Magnetic Moment, CP Violation and Flavor Oscillations in Matter  

E-Print Network (OSTI)

We consider collective oscillations of neutrinos, which are emergent nonlinear flavor evolution phenomena instigated by neutrino-neutrino interactions in astrophysical environments with sufficiently high neutrino densities. We investigate the symmetries of the problem in the full three flavor mixing scheme and in the exact many-body formulation by including the effects of CP violation and neutrino magnetic moment. We show that, similar to the two flavor scheme, several dynamical symmetries exist for three flavors in the single-angle approximation if the net electron background in the environment and the effects of the neutrino magnetic moment are negligible. Moreover, we show that these dynamical symmetries are present even when the CP symmetry is violated in neutrino oscillations. We explicitly write down the constants of motion through which these dynamical symmetries manifest themselves in terms of the generators of the SU(3) flavor transformations. We also show that the effects due to the CP-violating Dirac phase factor out of the many-body evolution operator and evolve independently of nonlinear flavor transformations if neutrino electromagnetic interactions are ignored. In the presence of a strong magnetic field, CP-violating effects can still be considered independently provided that an effective definition for neutrino magnetic moment is used.

Y. Pehlivan; A. B. Balantekin; Toshitaka Kajino

2014-06-19T23:59:59.000Z

85

Neutrino-driven wind simulations and nucleosynthesis of heavy elements  

E-Print Network (OSTI)

Neutrino-driven winds, which follow core-collapse supernova explosions, present a fascinating nuclear astrophysics problem that requires understanding advanced astrophysics simulations, the properties of matter and neutrino interactions under extreme conditions, the structure and reactions of exotic nuclei, and comparisons against forefront astronomical observations. The neutrino-driven wind has attracted vast attention over the last 20 years as it was suggested to be a candidate for the astrophysics site where half of the heavy elements are produced via the r-process. In this review, we summarize our present understanding of neutrino-driven winds from the dynamical and nucleosynthesis perspectives. Rapid progress has been made during recent years in understanding the wind with improved simulations and better micro physics. The current status of the fields is that hydrodynamical simulations do not reach the extreme conditions necessary for the r-process and the proton or neutron richness of the wind remains to be investigated in more detail. However, nucleosynthesis studies and observations point already to neutrino-driven winds to explain the origin of lighter heavy elements, such as Sr, Y, Zr.

A. Arcones; F. -K. Thielemann

2012-07-11T23:59:59.000Z

86

ARIANNA: A radio detector array for cosmic neutrinos on the Ross Ice Shelf  

E-Print Network (OSTI)

ARIANNA (The Antarctic Ross Ice Shelf Antenna Neutrino Array) is a proposed 100 km^3 detector for ultra-high energy (above 10^17 eV) astrophysical neutrinos. It will study the origins of ultra-high energy cosmic rays by searching for the neutrinos produced when these cosmic rays interact with the cosmic microwave background. Over 900 independently operating stations will detect the coherent radio Cherenkov emission produced when astrophysical neutrinos with energy above 10^17 eV interact in the Antarctic Ross Ice Shelf. Each station will use 8 log periodic dipole antennas to look for short RF pulses, with the most important frequencies between 80 MHz and 1 GHz. By measuring the pulse polarization and frequency spectrum, the neutrino arrival direction can be determined.

Klein, Spencer R

2012-01-01T23:59:59.000Z

87

Neutrino oscillations  

Science Journals Connector (OSTI)

...Solar neutrino oscillations The thermonuclear fusion reactions in the core of the Sun...dominant source of solar energy is the fusion process 4p !4 He + 2n e + 2e...related to the 4p ! 4He+2n e +2e+ fusion rate. Consequently, the theoretical...

2002-01-01T23:59:59.000Z

88

Neutrino telescopes in the World  

SciTech Connect

Neutrino astronomy has rapidly developed these last years, being the only way to get specific and reliable information about astrophysical objects still poorly understood.Currently two neutrino telescopes are operational in the World: BAIKAL, in the lake of the same name in Siberia, and AMANDA, in the ices of the South Pole. Two telescopes of the same type are under construction in the Mediterranean Sea: ANTARES and NESTOR. All these telescopes belong to a first generation, with an instrumented volume smaller or equal to 0.02 km3. Also in the Mediterranean Sea, the NEMO project is just in its stag phase, within the framework of a cubic kilometer size neutrino telescope study. Lastly, the ICECUBE detector, with a volume reaching about 1 km3, is under construction on the site of AMANDA experiment, while an extension of the BAIKAL detector toward km3 is under study. We will present here the characteristics of these experiments, as well as the results of their observations.

Ernenwein, J.-P. [GRPHE, Universite de Haute Alsace, 61 rue Albert Camus, 68093 Mulhouse cedex (France)

2007-01-12T23:59:59.000Z

89

Electromagnetic properties of neutrinos  

E-Print Network (OSTI)

A short review on electromagnetic properties of neutrinos is presented. In spite of many efforts in the theoretical and experimental studies of neutrino electromagnetic properties, they still remain one of the main puzzles related to neutrinos.

Carlo Giunti; Alexander Studenikin

2010-06-08T23:59:59.000Z

90

Search for Prompt Neutrino Emission from Gamma-Ray Bursts with IceCube  

E-Print Network (OSTI)

We present constraints derived from a search of four years of IceCube data for a prompt neutrino flux from gamma-ray bursts (GRBs). A single low-significance neutrino was found in coincidence with one of the 506 observed bursts, consistent with the expectation from atmospheric backgrounds. Although GRBs have been proposed as candidate sources for ultra-high energy cosmic rays, our limits on the neutrino flux disfavor much of the parameter space for the latest models. We also find that no more than $\\sim1\\%$ of the recently observed astrophysical neutrino flux consists of prompt emission from GRBs that are potentially observable by existing satellites.

Aartsen, M G; Adams, J; Aguilar, J A; Ahlers, M; Ahrens, M; Altmann, D; Anderson, T; Arguelles, C; Arlen, T C; Auffenberg, J; Bai, X; Barwick, S W; Baum, V; Bay, R; Beatty, J J; Tjus, J Becker; Becker, K -H; BenZvi, S; Berghaus, P; Berley, D; Bernardini, E; Bernhard, A; Besson, D Z; Binder, G; Bindig, D; Bissok, M; Blaufuss, E; Blumenthal, J; Boersma, D J; Bohm, C; Bos, F; Bose, D; Bser, S; Botner, O; Brayeur, L; Bretz, H -P; Brown, A M; Buzinsky, N; Casey, J; Casier, M; Cheung, E; Chirkin, D; Christov, A; Christy, B; Clark, K; Classen, L; Clevermann, F; Coenders, S; Cowen, D F; Silva, A H Cruz; Daughhetee, J; Davis, J C; Day, M; de Andr, J P A M; De Clercq, C; De Ridder, S; Desiati, P; de Vries, K D; de With, M; DeYoung, T; Daz-Vlez, J C; Dunkman, M; Eagan, R; Eberhardt, B; Ehrhardt, T; Eichmann, B; Eisch, J; Euler, S; Evenson, P A; Fadiran, O; Fazely, A R; Fedynitch, A; Feintzeig, J; Felde, J; Filimonov, K; Finley, C; Fischer-Wasels, T; Flis, S; Frantzen, K; Fuchs, T; Gaisser, T K; Gaior, R; Gallagher, J; Gerhardt, L; Gier, D; Gladstone, L; Glsenkamp, T; Goldschmidt, A; Golup, G; Gonzalez, J G; Goodman, J A; Gra, D; Grant, D; Gretskov, P; Groh, J C; Gro, A; Ha, C; Haack, C; Ismail, A Haj; Hallen, P; Hallgren, A; Halzen, F; Hanson, K; Hebecker, D; Heereman, D; Heinen, D; Helbing, K; Hellauer, R; Hellwig, D; Hickford, S; Hill, G C; Hoffman, K D; Hoffmann, R; Homeier, A; Hoshina, K; Huang, F; Huelsnitz, W; Hulth, P O; Hultqvist, K; Ishihara, A; Jacobi, E; Jacobsen, J; Japaridze, G S; Jero, K; Jlelati, O; Jurkovic, M; Kaminsky, B; Kappes, A; Karg, T; Karle, A; Kauer, M; Keivani, A; Kelley, J L; Kheirandish, A; Kiryluk, J; Kls, J; Klein, S R; Khne, J -H; Kohnen, G; Kolanoski, H; Koob, A; Kpke, L; Kopper, C; Kopper, S; Koskinen, D J; Kowalski, M; Kriesten, A; Krings, K; Kroll, G; Kroll, M; Kunnen, J; Kurahashi, N; Kuwabara, T; Labare, M; Lanfranchi, J L; Larsen, D T; Larson, M J; Lesiak-Bzdak, M; Leuermann, M; Lnemann, J; Madsen, J; Maggi, G; Maruyama, R; Mase, K; Matis, H S; Maunu, R; McNally, F; Meagher, K; Medici, M; Meli, A; Meures, T; Miarecki, S; Middell, E; Middlemas, E; Milke, N; Miller, J; Mohrmann, L; Montaruli, T; Morse, R; Nahnhauer, R; Naumann, U; Niederhausen, H; Nowicki, S C; Nygren, D R; Obertacke, A; Odrowski, S; Olivas, A; Omairat, A; O'Murchadha, A; Palczewski, T; Paul, L; Penek, ; Pepper, J A; Heros, C Prez de los; Pfendner, C; Pieloth, D; Pinat, E; Posselt, J; Price, P B; Przybylski, G T; Ptz, J; Quinnan, M; Rdel, L; Rameez, M; Rawlins, K; Redl, P; Rees, I; Reimann, R; Relich, M; Resconi, E; Rhode, W; Richman, M; Riedel, B; Robertson, S; Rodrigues, J P; Rongen, M; Rott, C; Ruhe, T; Ruzybayev, B; Ryckbosch, D; Saba, S M; Sander, H -G; Sandroos, J; Santander, M; Sarkar, S; Schatto, K; Scheriau, F; Schmidt, T; Schmitz, M; Schoenen, S; Schneberg, S; Schnwald, A; Schukraft, A; Schulte, L; Schulz, O; Seckel, D; Sestayo, Y; Seunarine, S; Shanidze, R; Smith, M W E; Soldin, D; Spiczak, G M; Spiering, C; Stamatikos, M; Stanev, T; Stanisha, N A; Stasik, A; Stezelberger, T; Stokstad, R G; Stl, A; Strahler, E A; Strm, R; Strotjohann, N L; Sullivan, G W; Taavola, H; Taboada, I; Tamburro, A; Tepe, A; Ter-Antonyan, S; Terliuk, A; Tei?, G; Tilav, S; Toale, P A; Tobin, M N; Tosi, D; Tselengidou, M; Unger, E; Usner, M; Vallecorsa, S; van Eijndhoven, N; Vandenbroucke, J; van Santen, J; Vanheule, S; Vehring, M; Voge, M; Vraeghe, M; Walck, C; Wallraff, M; Weaver, Ch; Wellons, M; Wendt, C; Westerhoff, S; Whelan, B J; Whitehorn, N; Wichary, C; Wiebe, K; Wiebusch, C H; Williams, D R; Wissing, H; Wolf, M; Wood, T R; Woschnagg, K; Xu, D L; Xu, X W; Xu, Y; Yanez, J P; Yodh, G; Yoshida, S; Zarzhitsky, P; Ziemann, J; Zoll, M

2014-01-01T23:59:59.000Z

91

Nuclear Structure Aspects in Nuclear Astrophysics  

SciTech Connect

Nuclear Astrophysics as a broad and diverse field of study can be viewed as a magnifier of the impact of microscopic processes on the evolution of macroscopic events. One of the primary goals in Nuclear Astrophysics is the understanding of the nucleosynthesis processes that take place in the cosmos and the simulation of the correlated stellar and explosive burning scenarios. These simulations are strongly dependent on the input from Nuclear Physics which sets the time scale for all stellar dynamic processes--from giga-years of stellar evolution to milliseconds of stellar explosions--and provides the basis for most of the signatures that we have for the interpretation of these events--from stellar luminosities, elemental and isotopic abundances to neutrino flux from distant supernovae. The Nuclear Physics input comes through nuclear structure, low energy reaction rates, nuclear masses, and decay rates. There is a common perception that low energy reaction rates are the most important component of the required nuclear physics input; however, in this article we take a broader approach and present an overview of the close correlation between various nuclear structure aspects and their impact on nuclear astrophysics. We discuss the interplay between the weak and the strong forces on stellar time scales due to the limitations they provide for the evolution of slow and rapid burning processes. The effects of shell structure in nuclei on stellar burning processes as well as the impact of clustering in nuclei is outlined. Furthermore we illustrate the effects of the various nuclear structure aspects on the major nucleosynthesis processes that have been identified in the last few decades. We summarize and provide a coherent overview of the impact of all aspects of nuclear structure on nuclear astrophysics.

Smith, Michael Scott [ORNL

2006-12-01T23:59:59.000Z

92

Neutrinos: Theory and Phenomenology  

SciTech Connect

The theory and phenomenology of neutrinos will be addressed, especially that relating to the observation of neutrino flavor transformations. The current status and implications for future experiments will be discussed with special emphasis on the experiments that will determine the neutrino mass ordering, the dominant flavor content of the neutrino mass eigenstate with the smallest electron neutrino content and the size of CP violation in the neutrino sector. Beyond the neutrino Standard Model, the evidence for and a possible definitive experiment to confirm or refute the existence of light sterile neutrinos will be briefly discussed.

Parke, Stephen

2013-10-22T23:59:59.000Z

93

Short Baseline Neutrino  

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

March 10, 2003 March 10, 2003 Jonathan Link, Columbia La Thuile A Little Neutrino Phenomenology If neutrinos have mass then they may oscillate between flavors. ) 27 . 1 ( sin...

94

Search for neutrino-induced particle showers with IceCube-40  

Science Journals Connector (OSTI)

We report on the search for neutrino-induced particle showers, so-called cascades, in the IceCube-40 detector. The data for this search were collected between April 2008 and May 2009 when the first 40 IceCube strings were deployed and operational. Three complementary searches were performed, each optimized for different energy regimes. The analysis with the lowest energy threshold (2TeV) targeted atmospheric neutrinos. A total of 67 events were found, consistent with the expectation of 41 atmospheric muons and 30 atmospheric neutrino events. The two other analyses targeted a harder, astrophysical neutrino flux. The analysis with an intermediate threshold of 25TeV leads to the observation of 14 cascadelike events, again consistent with the prediction of 3.0 atmospheric neutrino and 7.7 atmospheric muon events. We hence set an upper limit of E2?lim?7.4610?8??GeV?sr?1?s?1?cm?2 (90%C.L.) on the diffuse flux from astrophysical neutrinos of all neutrino flavors, applicable to the energy range 25TeV to 5PeV, assuming an E??2 spectrum and a neutrino flavor ratio of 1?1?1 at the Earth. The third analysis utilized a larger and optimized sample of atmospheric muon background simulation, leading to a higher energy threshold of 100TeV. Three events were found over a background prediction of 0.04 atmospheric muon events and 0.21 events from the flux of conventional and prompt atmospheric neutrinos. Including systematic errors this corresponds to a 2.7? excess with respect to the background-only hypothesis. Our observation of neutrino event candidates above 100TeV complements IceCubes recently observed evidence for high-energy astrophysical neutrinos.

M.?G. Aartsen et al. (IceCube Collaboration)

2014-05-01T23:59:59.000Z

95

Neutrino Oscillation Search Neutrino Oscillation Search  

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

EPS HEP 2007 MiniBooNE, Part 2: MiniBooNE, Part 2: First Results of the Muon-To-Electron First Results of the Muon-To-Electron Neutrino Oscillation Search Neutrino Oscillation...

96

RESEARCH UPDATE Ecology Division  

E-Print Network (OSTI)

1 RESEARCH UPDATE Ecology Division Biotype has changed its name to Ecotype! Following the re-organisation of Forest Research into five science Divisions and three Support Divisions, the former Woodland Ecology Branches to form the new Ecology Division. We decided to give the divisional newsletter a new name (and

97

Searches for Point-like and extended neutrino sources close to the Galactic Centre using the ANTARES neutrino Telescope  

E-Print Network (OSTI)

A search for cosmic neutrino sources using six years of data collected by the ANTARES neutrino telescope has been performed. Clusters of muon neutrinos over the expected atmospheric background have been looked for. No clear signal has been found. The most signal-like accumulation of events is located at equatorial coordinates RA=$-$46.8$^{\\circ}$ and Dec=$-$64.9$^{\\circ}$ and corresponds to a 2.2$\\sigma$ background fluctuation. In addition, upper limits on the flux normalization of an E$^{-2}$ muon neutrino energy spectrum have been set for 50 pre-selected astrophysical objects. Finally, motivated by an accumulation of 7 events relatively close to the Galactic Centre in the recently reported neutrino sample of the IceCube telescope, a search for point sources in a broad region around this accumulation has been carried out. No indication of a neutrino signal has been found in the ANTARES data and upper limits on the flux normalization of an E$^{-2}$ energy spectrum of neutrinos from point sources in that region have been set. The 90% confidence level upper limits on the muon neutrino flux normalization vary between 3.5 and 5.1$\\times$10$^{-8}$ GeV$\\,$cm$^{-2}$s$^{-1}$, depending on the exact location of the source.

ANTARES Collaboration; S. Adrin-Martnez; A. Albert; M. Andr; M. Anghinolfi; G. Anton; M. Ardid; J. -J. Aubert; B. Baret; J. Barrios-Mart; S. Basa; V. Bertin; S. Biagi; C. Bogazzi; R. Bormuth; M. Bou-Cabo; M. C. Bouwhuis; R. Bruijn; J. Brunner; J. Busto; A. Capone; L. Caramete; C. Crloganu; J. Carr; T. Chiarusi; M. Circella; L. Core; H. Costantini; P. Coyle; A. Creusot; C. Curtil; G. De Rosa; I. Dekeyser; A. Deschamps; G. De Bonis; C. Distefano; C. Donzaud; D. Dornic; Q. Dorosti; D. Drouhin; A. Dumas; T. Eberl; D. Elssser; A. Enzenhfer; S. Escoffier; K. Fehn; I. Felis; P. Fermani; F. Folger; L. A. Fusco; S. Galat; P. Gay; S. Geielsder; K. Geyer; V. Giordano; A. Gleixner; J. P. Gmez-Gonzlez; K. Graf; G. Guillard; H. van Haren; A. J. Heijboer; Y. Hello; J. J. Hernndez-Rey; B. Herold; A. Herrero; J. Hl; J. Hofestdt; C. W James; M. de Jong; M. Kadler; O. Kalekin; U. Katz; D. Kieling; P. Kooijman; A. Kouchner; I. Kreykenbohm; V. Kulikovskiy; R. Lahmann; E. Lambard; G. Lambard; D. Lattuada; D. Lefvre; E. Leonora; H. Loehner; S. Loucatos; S. Mangano; M. Marcelin; A. Margiotta; J. A. Martnez-Mora; S. Martini; A. Mathieu; T. Michael; P. Migliozzi; C. Mueller; M. Neff; E. Nezri; D. Palioselitis; G. E. P?v?la?; C. Perrina; P. Piattelli; V. Popa; T. Pradier; C. Racca; G. Riccobene; R. Richter; K. Roensch; A. Rostovtsev; M. Saldaa; D. F. E. Samtleben; A. Snchez-Losa; M. Sanguineti; P. Sapienza; J. Schmid; J. Schnabe; S. Schulte; F. Schssler; T. Seitz; C. Sieger; A. Spies; M. Spurio; J. J. M. Steijger; Th. Stolarczyk; M. Taiuti; C. Tamburini; Y. Tayalati; A. Trovato; B. Vallage; C. Valle; V. Van Elewyck; E. Visser; D. Vivolo; S. Wagner; J. Wilms; E. de Wolf; K. Yatkin; H. Yepes; J. D. Zornoza; J. Ziga

2014-02-25T23:59:59.000Z

98

Census Division List  

Gasoline and Diesel Fuel Update (EIA)

please contact the National Energy Information Center at (202) 586-8800. please contact the National Energy Information Center at (202) 586-8800. Supplement Tables to the Annual Energy Outlook 2002 Census Division List Division 1 Division 2 Division 3 Division 4 Division 5 New England Middle Atlantic East North Central West North Central South Atlantic Connecticut New Jersey Illinois Iowa Delaware Maine New York Indiana Kansas District of Columbia Massachusetts Pennsylvania Michigan Minnesota Florida New Hampshire Ohio Missouri Georgia Rhode Island Wisconsin Nebraska Maryland Vermont North Dakota North Carolina South Dakota South Carolina Virginia West Virginia Division 6 Division 7 Division 8 Division 9 East South Central West South Central Mountain Pacific Alabama Arkansas Arizona Alaska

99

Berkeley Lab: Year of Science: Nature's Unending Surprises: the Neutrino  

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

Physics! Physics! Imagine a day without physics or technology? No thank you! That would mean giving up the computer you are using, the electricity that warmed your coffee this morning, and the weather satellite that informed your clothing choice. And March is a great month to celebrate Physics because 3/14 = Pi day and Albert Einstein's birthday! Year of Science tab February Evolution March Physics April Energy May Environment June Water August Climate September Conservation October Geosciences November Chemistry December Health Neutrino Science, Part One Neutrino Science, Part Two Nature's Unending Surprises: the Neutrino The first of two articles on neutrino science at Berkeley Lab By Paul Preuss Kevin Lesko image Neutrino hunter Kevin Lesko of Berkeley Lab's Nuclear Sciences Division holds a photomultiplier tube like those used in solving

100

Neutrinos from dark matter annihilations at the galactic center  

Science Journals Connector (OSTI)

We discuss the prospects for detection of high energy neutrinos from dark matter (DM) annihilation at the galactic center (GC). Despite the large uncertainties associated with our poor knowledge of the distribution of dark matter in the innermost regions of the Galaxy, we determine an upper limit on the neutrino flux by requiring that the associated gamma-ray emission does not exceed the observed flux. We conclude that a neutrino flux from the GC will not be observable by Antares if dark matter is made of neutralinos with mass smaller than 650GeV, while for heavier neutralinos, corresponding to models that will soon be probed by HESS (high energy stereoscopic system), the upper limit on the neutrino flux is barely above the Antares sensitivity. The detection of a larger flux would either require an alternative explanation, in terms of astrophysical processes, or the adoption of other dark matter candidates, disfavouring the case for neutralinos.

Gianfranco Bertone; Emmanuel Nezri; Jean Orloff; Joseph Silk

2004-09-02T23:59:59.000Z

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101

Neutrino physics at accelerators  

E-Print Network (OSTI)

Present and future neutrino experiments at accelerators are mainly concerned with understanding the neutrino oscillation phenomenon and its implications. Here a brief account of neutrino oscillations is given together with a description of the supporting data. Some current and planned accelerator neutrino experiments are also explained.

Enrique Fernandez

2006-07-16T23:59:59.000Z

102

Neutrino Physics AAPT Strand Day  

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

Physics AAPT Strand Day NSTA Regional, 2005 Jocelyn Monroe, Columbia University 1. What Is a Neutrino Anyway? 2. The Question Of Neutrino Mass 3. Searching For Neutrino...

103

A Toy Model Study of Decay Trapping | Superconducting Magnet Division  

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

A Toy Model Study of Decay Trapping, reported by Brett Parker A Toy Model Study of Decay Trapping, reported by Brett Parker Introduction A group from the BNL Superconducting Magnet Division is looking at various options for dipole magnets which would be suitable for use in a muon storage ring that is used as a neutrino factory. Since the useful neutrino beams from a neutrino factory come from straight sections it is desirable to minimize the rings arc circumference, in relation to straight section length, in order to ensure that the fraction of muons which decay in the straight section is as large as possible. Therefore superconducting magnets, with higher B-fields and smaller bend radii, are reasonable to consider for this application. Unfortunately the decay electrons generated along with the neutrinos carry on average about a third of the original

104

Neutrinos in Nuclear Physics  

E-Print Network (OSTI)

Since the discovery of nuclear beta decay, nuclear physicists have studied the weak interaction and the nature of neutrinos. Many recent and current experiments have been focused on the elucidation of neutrino oscillations and neutrino mass. The quest for the absolute value of neutrino mass continues with higher precision studies of the tritium beta decay spectrum near the endpoint. Neutrino oscillations are studied through measurements of reactor neutrinos as a function of baseline and energy. And experiments searching for neutrinoless double beta decay seek to discover violation of lepton number and establish the Majorana nature of neutrino masses.

McKeown, R D

2014-01-01T23:59:59.000Z

105

The status of the solar neutrino problem and the Russian-American gallium experiment (SAGE)  

SciTech Connect

Perhaps the most outstanding discrepancy between prediction and measurements in current particle physics comes from the solar neutrino problem, in which a large deficit of high-energy solar neutrinos is observed. Many Nonstandard Solar Models have been invoked to try to reduce the predicted flux, but all have run into problems in trying to reproduce other measured parameters (e.g., the luminosity) of the Sun. Other explanations involving new physics such as neutrino decay and neutrino oscillations, etc. have also been proffered. Again, most of these explanations have been ruled out by either laboratory or astrophysical measurements. It appears that perhaps the most likely particle physics solution is that of matter enhanced neutrino oscillation, the Mikheyev-Smirnov-Wolfenstein (MSW) oscillations. Two new radiochemical gallium experiments, which have a low enough threshold to be sensitive to the dominant flux of low-energy p-p neutrinos, now also report a deficit and also favor a particle physics solution.

Bowles, T.J.

1994-04-01T23:59:59.000Z

106

THE ASTROPHYSICAL JOURNAL, 487:962966, 1997 October 1 1997. The American Astronomical Society. All rights reserved. Printed in U.S.A.(  

E-Print Network (OSTI)

with resolving power R D 30,000. The absolute wavelength calibration of the SWS grating section established, Postfach 1603, D-85740 Garching, Germany. 3 ISO Science Operations Centre, Astrophysics Division of ESA

Spoon, Henrik

107

Search for ultrahigh-energy tau neutrinos with IceCube  

Science Journals Connector (OSTI)

The first dedicated search for ultrahigh-energy (UHE) tau neutrinos of astrophysical origin was performed using the IceCube detector in its 22-string configuration with an instrumented volume of roughly 0.25??km3. The search also had sensitivity to UHE electron and muon neutrinos. After application of all selection criteria to approximately 200 live-days of data, we expect a background of 0.600.19(stat)+0.56-0.58(syst) events and observe three events, which after inspection, emerge as being compatible with background but are kept in the final sample. Therefore, we set an upper limit on neutrinos of all flavors from UHE astrophysical sources at 90% C.L. of E?2?90(?x)<16.310-8??GeV?cm-2?sr?-1?s-1 over an estimated primary neutrino energy range of 340TeV to 200PeV.

R. Abbasi et al. (IceCube Collaboration)

2012-07-26T23:59:59.000Z

108

Biosciences Division | ORNL  

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

Publications Newsletters Organizational Charts Research Highlights Media Mentions Energy and Transportation Science Division Electrical and Electronics Systems Research Division Building Technologies Program Sustainable Transportation Program Clean Energy Home | Science & Discovery | Clean Energy | Supporting Organizations | Biosciences Division SHARE Biosciences Division The objective of the Biosciences Division (BSD) at Oak Ridge National Laboratory is to advance science and technology to better understand complex biological systems and their relationship with the environment. The division has expertise and special facilities in genomics, computational biology, microbiology, microbial ecology, biophysics and structural biology, and plant sciences. This collective expertise includes

109

Neutrinos, Dark Matter and Nuclear Detection  

SciTech Connect

Solutions to problems in nuclear non-proliferation and counter-terrorism may be found at the forefront of modern physics. Neutrino oscillation experiments, dark matter searches, and high energy astrophysics, are based on technology advances that have may also have application to nuclear detection. The detection problems share many characteristics, including energy scales, time structures, particle-type, and, of course, the combination of high backgrounds and low signal levels. This convergence of basic and applied physics is realized in non-proliferation and homeland security projects at Lawrence Livermore National Laboratory. Examples described here include reactor anti-neutrino monitoring, dual-phase noble liquid TPC development, gamma-ray telescopes, and nuclear resonance fluorescence.

Goldstein, W H; Bernstein, A; Craig, W W; Johnson, M

2007-05-29T23:59:59.000Z

110

Division of Administration  

E-Print Network (OSTI)

Contracts & Procurement Don Green Controller Steven Yim Budget Planning & Administration Sarah Song Admin Operations Lieutenant Scot Willey Administration Lieutenant John Brockie Division Communication Editorial Communication Editorial Board looks forward to improving communication within and from the Division and welcomes

de Lijser, Peter

111

Division of Agriculture,  

E-Print Network (OSTI)

DAFVM Division of Agriculture, Forestry, and Veterinary M e d i c i n e Visit us online at www to the Mississippi State University Division of Agriculture, Forestry, and Veterinary Medicine. Discrimination based-3-14) Mississippi State University's Division of Agriculture, Forestry, and Veterinary Medicine, or DAFVM

Ray, David

112

Neutrino energy reconstruction problems and neutrino oscillations  

E-Print Network (OSTI)

We discuss the accuracy of the usual procedure for neutrino energy reconstruction which is based on the quasielastic kinematics. Our results are described in terms of a probability distribution for a real neutrino energy value. Several factors are responsible of the deviations from the reconstructed value. The main one is the multinucleon component of the neutrino interaction which in the case of Cherenkov detectors enters as a quasielastic cross section, increasing the mean neutrino energy which can differ appreciably from the reconstructed value. As an application we derive, for excess electron events attributed to the conversion of muon neutrinos, the true neutrino energy distribution based on the experimental one which is given in terms of the reconstructed value. The result is a reshaping effect. For MiniBooNE the low energy peak is suppressed and shifted at higher energies, which may influence the interpretation in terms of oscillation. For T2K at the Super Kamiokande far detector the reshaping translat...

Martini, M; Chanfray, G

2012-01-01T23:59:59.000Z

113

Neutrino_Lectures_1and2  

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

NuTeV sin 2 W Measurement Direct Neutrino Mass Measurements Neutrino Oscillation Phenomenology Solar Neutrinos (part 1) Lecture 2: Solar Neutrinos (part 2) Atmospheric and...

114

Nuclear astrophysics at DRAGON  

SciTech Connect

The DRAGON recoil separator is located at the ISAC facility at TRIUMF, Vancouver. It is designed to measure radiative alpha and proton capture reactions of astrophysical importance. Over the last years, the DRAGON collaboration has measured several reactions using both radioactive and high-intensity stable beams. For example, the 160(a, g) cross section was recently measured. The reaction plays a role in steady-state helium burning in massive stars, where it follows the 12C(a, g) reaction. At astrophysically relevant energies, the reaction proceeds exclusively via direct capture, resulting in a low rate. In this measurement, the unique capabilities of DRAGON enabled determination not only of the total reaction rates, but also of decay branching ratios. In addition, results from other recent measurements will be presented.

Hager, U. [Colorado School of Mines, Golden, Colorado (United States)

2014-05-02T23:59:59.000Z

115

Integrated astrophysical modeling  

SciTech Connect

In this project, we have developed prototype techniques for defining and extending a variety of astrophysical modeling capabilities, including those involving multidimensional hydrodynamics, complex transport, and flexibly-coupled equation-of state and nuclear reaction networks. As expected, this project is having both near-term payoffs in understanding complex astrophysical phenomena, as well as significant spin-offs in terms of people and ideas to related ASCI code efforts. Most of our work in the first part of this project was focused on the modularization, extension, and initial integration of 4 previously separate and incommensurate codes: the stellar evolution/explosion code KEPLER; the non-LTE spectral line transport code, EDDINGTON, used for modeling supernovae spectra; the 3-D smooth particle hydro code, PIP; and the discontinuous-finite-element, 3D hydro module from the lCF3D code.

Weaver, T.A., Eastman, R.G., Dubois, P., Eltgroth, P.G., Gentile, N., Jedamzik, K., Wilson, J.R.

1997-06-03T23:59:59.000Z

116

BNL | Neutrino Research History  

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

Brookhaven Neutrino Research Brookhaven Neutrino Research image of neutrinos Tens of billions of neutrinos are passing through every square centimeter of the Earth's surface right now. A Ghost-Particle Retrospective Neutrinos, ghostlike particles that flooded the universe just moments after the Big Bang, are born in the hearts of stars and other nuclear reactions. Untouched by electromagnetism and nearly as fast as light, neutrinos pass practically unhindered through everything from planets to people, only rarely responding to the weak nuclear force and the even weaker gravity. In fact, at any given moment, tens of billions of neutrinos are passing through every square centimeter of the Earth's surface. Neutrino Research News photomultiplier tubes New Results from Daya Bay: Tracking the Disappearance of Ghostlike

117

Hot Topics in astrophysics  

Science Journals Connector (OSTI)

Three current topics in astrophysics are described on the occasion of the joint meeting of the AAPT and the American Astronomical Society (Jan. 7-11 2001) in San Diego CA. They are the habitability of Mars (evidence for ancient and contemporary water and indications of current volcanism);black holes and their intimate relationship with galaxy bulges including their involvement in the x-ray background; and the nature and origin of gamma-ray bursts.

Stephen P. Maran

2000-01-01T23:59:59.000Z

118

Solar neutrino experiments  

Science Journals Connector (OSTI)

The main results of solar neutrino experiments are presented, ranging from the pioneering Cl-Ar experiment up to the most recent Borexino data. Solar neutrino fluxes and spectra are given for two versions of the standard solar model, and radiochemical and electronic detectors are briefly described. The results of Be- and pep-neutrino detection by Borexino are presented. The LMA-MSW oscillation solution of the solar neutrino problem is considered.

A V Derbin

2014-01-01T23:59:59.000Z

119

Physics Division: Annual report, 1 January-31 December 1985  

SciTech Connect

This report summarizes the research programs of the Physics Division of the Lawrence Berkeley Laboratory during calendar 1985. The Division's principal activities are research in theoretical and experimental high energy physics, and the development of tools such as sophisticated detectors to carry out that research. The physics activity also includes a program in astrophysics, and the efforts of the Particle Data Group whose compilations serve the worldwide high energy physics community. Finally, in addition to the physics program, there is a smaller but highly significant research effort in applied mathematics. Some specific topics included in this report are: Research on e/sup +/e/sup -/ annihilation, superconducting super collider, double beta decay, high energy astrophysics and interdisciplinary experiments, detector research and development, electroweak interactions, strong interaction, quantum field theory, superstrings and quantum gravity, vortex methods and turbulence and computational mathematics.

Not Available

1987-05-01T23:59:59.000Z

120

Neutrino Astronomy Scott Wilbur  

E-Print Network (OSTI)

V protons, which should be created with neutrinos, have been seen Can be used to observe possible dark Particle Physics Extremely long baseline for neutrino oscillation studies Dark Matter Searches Many dark Detector Picture from AMANDA II Web Site: http://www.amanda.uci.edu #12;Advantages of Neutrino Astronomy

Golwala, Sunil

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

Exploring the Universe with Very High Energy Neutrinos  

E-Print Network (OSTI)

With the discovery of a high-energy neutrino flux in the 0.1 PeV to PeV range from beyond the Earth's atmosphere with the IceCube detector, neutrino astronomy has achieved a major breakthrough in the exploration of the high-energy universe. One of the main goals is the identification and investigation of the still mysterious sources of the cosmic rays which are observed at Earth with energies up to several $10^5$ PeV. In addition to being smoking-gun evidence for the presence of cosmic rays in a specific object, neutrinos escape even dense environments and can reach us from distant places in the universe, thereby providing us with a unique tool to explore cosmic accelerators. This article summarizes our knowledge about the observed astrophysical neutrino flux and current status of the search for individual cosmic neutrino sources. At the end, it gives an overview of plans for future neutrino telescope projects.

Kappes, A

2015-01-01T23:59:59.000Z

122

A prototype station for ARIANNA: a detector for cosmic neutrinos  

SciTech Connect

The Antarctic Ross Iceshelf Antenna Neutrino Array (ARIANNA) is a proposed detector for ultra-high energy astrophysical neutrinos. It will detect coherent radio Cherenkov emission from the particle showers produced by neutrinos with energies above about 1017 eV. ARIANNA will be built on the Ross Ice Shelf just off the coast of Antarctica, where it will eventually cover about 900 km2 in surface area. There, the ice-water interface below the shelf reflects radio waves, giving ARIANNA sensitivity to downward going neutrinos and improving its sensitivity to horizontally incident neutrinos. ARIANNA detector stations will each contain 4-8 antennas which search for brief pulses of 50 MHz to 1 GHz radio emission from neutrino interactions. We describe a prototype station for ARIANNA which was deployed in Moore's Bay on the Ross Ice Shelf in December 2009, discuss the design and deployment, and present some initial figures on performance. The ice shelf thickness was measured to be 572 +- 6 m at the deployment site.

Gerhardt, L.; Klein, S.; Stezelberger, T.; Barwick, S.; Dookayka, K.; Hanson, J.; Nichol, R.

2010-05-27T23:59:59.000Z

123

A note on the neutrino decay line and the possibilities of its detection  

E-Print Network (OSTI)

Using simple physical reasoning we have estimated the wavelengths and line-widths of spectral lines arising from the decays of massive neutrinos. We have, also, to some extent, discussed the possible consequences of these decays in observable astrophysical settings. We have compared our conclusions with the predictions of the decaying dark matter (DDM) model and cold + hot dark matter (${\\rm C\

Srdjan Samurovic; Vladan Celebonovic

1995-12-06T23:59:59.000Z

124

Critical Kinetic Plasma Processes In Relativistic Astrophysics.  

E-Print Network (OSTI)

??Plasma astrophysics deals with collective plasma processes in astrophysical scenarios. As observational astronomy pushes towards unprecedented resolutions in space and time, the focus of theoretical (more)

Jaroschek, Claus

2005-01-01T23:59:59.000Z

125

APPLICATION DIVISION III & PSYCHOLOGY  

E-Print Network (OSTI)

APPLICATION DIVISION III & PSYCHOLOGY Shared Overhead Funds Name: Date: Project Title: Amount and Psychology are intended to provide new and continuing faculty with special help to bring research

Aalberts, Daniel P.

126

Engineering Division Superconducting  

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

10152014 Joseph V. Minervini 74 35 MW superconducting motor Superconducting Fault Current Limiter (SCFL) Technology & Engineering Division HTS (MgB 2 ) * DC superconducting...

127

Nuclear Masses in Astrophysics  

E-Print Network (OSTI)

Among all nuclear ground-state properties, atomic masses are highly specific for each particular combination of N and Z and the data obtained apply to a variety of physics topics. One of the most crucial questions to be addressed in mass spectrometry of unstable radionuclides is the one of understanding the processes of element formation in the Universe. To this end, accurate atomic mass values of a large number of exotic nuclei participating in nucleosynthesis are among the key input data in large-scale reaction network calculations. In this paper, a review on the latest achievements in mass spectrometry for nuclear astrophysics is given.

Christine Weber; Klaus Blaum; Hendrik Schatz

2008-12-09T23:59:59.000Z

128

Computational Infrastructure for Nuclear Astrophysics  

SciTech Connect

A Computational Infrastructure for Nuclear Astrophysics has been developed to streamline the inclusion of the latest nuclear physics data in astrophysics simulations. The infrastructure consists of a platform-independent suite of computer codes that is freely available online at nucastrodata.org. Features of, and future plans for, this software suite are given.

Smith, Michael S.; Hix, W. Raphael; Bardayan, Daniel W.; Blackmon, Jeffery C. [Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831-6354 (United States); Lingerfelt, Eric J.; Scott, Jason P.; Nesaraja, Caroline D. [Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831-6354 (United States); Dept. Physics and Astronomy, Univ. of Tennessee, Knoxville, TN 37996-1200 (United States); Chae, Kyungyuk; Guidry, Michael W. [Dept. Physics and Astronomy, Univ. of Tennessee, Knoxville, TN 37996-1200 (United States); Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831-6354 (United States); Koura, Hiroyuki [Japan Atomic Energy Agency, Tokai, Naka-gun, Ibaraki 319-1195 (Japan); Meyer, Richard A. [RAME' Inc., Teaticket, MA, 02536 (United States)

2006-07-12T23:59:59.000Z

129

BooNE: Booster Neutrino Experiment  

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

arXiv:0806.1449 General neutrino fluxes vs true neutrino energy, for MiniBooNE: image:muon neutrino flux image:electron neutrino flux image:final muon and electron neutrino...

130

Neutrino Astronomy and Cosmic Rays Spectroscopy at Horizons  

E-Print Network (OSTI)

A new air-showering physics may rise in next years at horizon, offering at different angles and altitudes a fine tuned filtered Cosmic Rays astrophysics and an upward Neutrino induced air-showering astronomy. Most of this opportunity arises because of neutrino masses, their mixing and the consequent replenishment of rarest tau flavor during its flight in Space. Horizontal air atmosphere act as a filter for High energy Cosmic Rays (CR) and as a beam dump for Ultra High Energy (UHE) neutrinos and a powerfull amplifier for its tau decay in air by its wide showering areas. Earth sharp shadows plays the role of a huge detector volume for UHE neutrino and a noise-free screen for upcoming EeVs tau air-showers (as well PeVs anti-neutrino electron air interactions). Projects for Tau Airshowers are growing at the top of a mountains or at the edge of a cliff. ASHRA in Hawaii and CRNTN in Utah are tracking fluorescence lights, while other novel projects on Crown array detectors on mountains, on balloons and satellites are elaborated for Cherenkov lights. AUGER, facing the Ande edges, ARGO located within a deep valley are testing inclined showers; MILAGRO (and MILAGRITO) may be triggered by horizontal up-going muon bundles from the Earth edges; HIRES and AUGER UHECR detectors, linking twin array telescopes along their axis may test horizontal Cerenkov blazing photons. MAGIC (Hess, Veritas) and Shalon Telescopes may act already like a detector for few PeVs and Glashow resonance neutrino events; MAGIC pointing downward to terrestrial ground acts as a massive tens of km^3 detector, making it the most sensitive dedicated neutrino telescope. MAGIC facing the sea edges must reveal mirrored downward UHECR Air-showers Cherenkov flashes. Magic-crown systems may lead to tens km^3, neutrino detectors.

D. Fargion

2006-04-20T23:59:59.000Z

131

MINOS Sterile Neutrino Search  

SciTech Connect

The Main Injector Neutrino Oscillation Search (MINOS) is a long-baseline accelerator neutrino experiment designed to measure properties of neutrino oscillation. Using a high intensity muon neutrino beam, produced by the Neutrinos at Main Injector (NuMI) complex at Fermilab, MINOS makes two measurements of neutrino interactions. The first measurement is made using the Near Detector situated at Fermilab and the second is made using the Far Detector located in the Soudan Underground laboratory in northern Minnesota. The primary goal of MINOS is to verify, and measure the properties of, neutrino oscillation between the two detectors using the {nu}{sub {mu}} {yields} V{sub {tau}} transition. A complementary measurement can be made to search for the existence of sterile neutrinos; an oft theorized, but experimentally unvalidated particle. The following thesis will show the results of a sterile neutrino search using MINOS RunI and RunII data totaling {approx}2.5 x 10{sup 20} protons on target. Due to the theoretical nature of sterile neutrinos, complete formalism that covers transition probabilities for the three known active states with the addition of a sterile state is also presented.

Koskinen, David Jason; /University Coll. London

2009-09-01T23:59:59.000Z

132

HEALTH SCIENCES Division of  

E-Print Network (OSTI)

HEALTH SCIENCES Division of University of nevada, Las vegas IMPACT How we serve our students, our community, and our state #12;academic impact UNLV's Division of Health Sciences is a vital force in the Las Vegas metropolitan area, educating desperately needed health care professionals and taking on some

Cho, Hokwon

133

Environmental Assessment for Conducting Astrophysics and Other...  

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

(Society for the Advancement of Autodynamics), 2000. Neutrino: Detectors & Beams web page, dated August 10, 2000, neutrino...

134

DIVISION & TECHNICAL COMMITTEE MEMBERSHIP: -Division Chair of the ASME NDE (Nondestructive Evaluation) Division, 2003-2005  

E-Print Network (OSTI)

DIVISION & TECHNICAL COMMITTEE MEMBERSHIP: - Division Chair of the ASME NDE (Nondestructive Evaluation) Division, 2003-2005 - Member of the Executive Committee of the ASME NDE Engineering Division, 1997-present - Secretary and Vice-Chairman of the ASME NDE Division from 2001 to 2003 - Program

Wong, Pak Kin

135

Solar neutrino detection  

SciTech Connect

More than 40 years ago, neutrinos where conceived as a way to test the validity of the solar models which tell us that stars are powered by nuclear fusion reactions. The first measurement of the neutrino flux, in 1968 in the Homestake mine in South Dakota, detected only one third of the expected value, originating what has been known as the Solar Neutrino Problem. Different experiments were built in order to understand the origin of this discrepancy. Now we know that neutrinos undergo oscillation phenomenon changing their nature traveling from the core of the Sun to our detectors. In the work the 40 year long saga of the neutrino detection is presented; from the first proposals to test the solar models to last real time measurements of the low energy part of the neutrino spectrum.

Miramonti, Lino [Physics department of Milano University and INFN (Italy)

2009-04-30T23:59:59.000Z

136

Solar neutrino detection  

E-Print Network (OSTI)

More than 40 years ago, neutrinos where conceived as a way to test the validity of the solar models which tell us that stars are powered by nuclear fusion reactions. The first measurement of the neutrino flux, in 1968 in the Homestake mine in South Dakota, detected only one third of the expected value, originating what has been known as the Solar Neutrino Problem. Different experiments were built in order to understand the origin of this discrepancy. Now we know that neutrinos undergo oscillation phenomenon changing their nature traveling from the core of the Sun to our detectors. In the work the 40 year long saga of the neutrino detection is presented; from the first proposals to test the solar models to last real time measurements of the low energy part of the neutrino spectrum.

Lino Miramonti

2009-01-22T23:59:59.000Z

137

Massive neutrinos and cosmology  

E-Print Network (OSTI)

The present experimental results on neutrino flavour oscillations provide evidence for non-zero neutrino masses, but give no hint on their absolute mass scale, which is the target of beta decay and neutrinoless double-beta decay experiments. Crucial complementary information on neutrino masses can be obtained from the analysis of data on cosmological observables, such as the anisotropies of the cosmic microwave background or the distribution of large-scale structure. In this review we describe in detail how free-streaming massive neutrinos affect the evolution of cosmological perturbations. We summarize the current bounds on the sum of neutrino masses that can be derived from various combinations of cosmological data, including the most recent analysis by the WMAP team. We also discuss how future cosmological experiments are expected to be sensitive to neutrino masses well into the sub-eV range.

Julien Lesgourgues; Sergio Pastor

2006-05-29T23:59:59.000Z

138

High Energy Astrophysics: Overview 1/47 High Energy Astrophysics in Context  

E-Print Network (OSTI)

High Energy Astrophysics: Overview 1/47 High Energy Astrophysics in Context 1 Some references The following set of volumes is an outstanding summary of the field of High Energy Astrophysics and its relation to the rest of Astrophysics High Energy Astrophysics, Vols. 1,2 and 3. M.S. Longair, Cam- bridge University

Bicknell, Geoff

139

On the origin of IceCube's PeV neutrinos  

SciTech Connect

The IceCube collaboration has recently reported the observation of two events with energies in excess of 1 PeV. While an atmospheric origin of these events cannot be ruled out at this time, this pair of showers may potentially represent the first observation of high-energy astrophysical neutrinos. In this paper, we argue that if these events are neutrino-induced, then the neutrinos are very likely to have been produced via photo-meson interactions taking place in the same class of astrophysical objects that are responsible for the acceleration of the ? 10{sup 17} eV cosmic ray spectrum. Among the proposed sources of such cosmic rays, gamma-ray bursts stand out as particularly capable of generating PeV neutrinos at the level implied by IceCube's two events. In contrast, the radiation fields in typical active galactic nuclei models are likely dominated by lower energy (UV) photons, and thus feature higher energy thresholds for pion production, leading to neutrino spectra which peak at EeV rather than PeV energies (models with significant densities of x-ray emission, however, could evade this problem). Cosmogenic neutrinos generated from the propagation of ultra-high energy cosmic rays similarly peak at energies that are much higher than those of the events reported by IceCube.

Cholis, Ilias; Hooper, Dan, E-mail: cholis@fnal.gov, E-mail: dhooper@fnal.gov [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States)

2013-06-01T23:59:59.000Z

140

ARIANNA: A radio detector array for cosmic neutrinos on the Ross Ice Shelf  

E-Print Network (OSTI)

ARIANNA (The Antarctic Ross Ice Shelf Antenna Neutrino Array) is a proposed 100 km^3 detector for ultra-high energy (above 10^17 eV) astrophysical neutrinos. It will study the origins of ultra-high energy cosmic rays by searching for the neutrinos produced when these cosmic rays interact with the cosmic microwave background. Over 900 independently operating stations will detect the coherent radio Cherenkov emission produced when astrophysical neutrinos with energy above 10^17 eV interact in the Antarctic Ross Ice Shelf. Each station will use 8 log periodic dipole antennas to look for short RF pulses, with the most important frequencies between 80 MHz and 1 GHz. By measuring the pulse polarization and frequency spectrum, the neutrino arrival direction can be determined. In one year of operation, the full array should observe a clear GZK neutrino signal, with different models predicting between 3 and 51 events, depending on the nuclear composition of the cosmic-rays and on the cosmic evolution of their sources.

Spencer R. Klein; for the ARIANNA Collaboration

2012-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

Neutrinos from Gamma Ray Bursts  

E-Print Network (OSTI)

We show that the detection of neutrinos from a typical gamma ray burst requires a kilometer-scale detector. We argue that large bursts should be visible with the neutrino telescopes under construction. We emphasize the 3 techniques by which neutrino telescopes can perform this search: by triggering on i) bursts of muons from muon neutrinos, ii) muons from air cascades initiated by high energy gamma rays and iii) showers made by relatively low energy ($\\simeq 100\\,\\mev$) electron neutrinos. Timing of neutrino-photon coincidences may yield a measurement of the neutrino mass to order $10^{-5}$~eV, an interesting range in light of the solar neutrino anomaly.

F. Halzen; G. Jaczko

1996-02-07T23:59:59.000Z

142

NSF Division of Astronomical Sciences Senior Review NAIC Senior Review Memo Series  

E-Print Network (OSTI)

Sciences (AST) about its planning for a "Senior Review". The purpose of the Senior Review is to enable AST of the recent Decade Review of Astronomy and Astrophysics. This AST plan to assess and reallocate its facilitiesNSF Division of Astronomical Sciences Senior Review NAIC Senior Review Memo Series Memo #1

143

Neutrinos: Nature's Ghosts?  

ScienceCinema (OSTI)

Dr. Don Lincoln introduces one of the most fascinating inhabitants of the subatomic realm: the neutrino. Neutrinos are ghosts of the microworld, almost not interacting at all. In this video, he describes some of their properties and how they were discovered. Studies of neutrinos are expected to be performed at many laboratories across the world and to form one of the cornerstones of the Fermilab research program for the next decade or more.

Lincoln, Don

2014-08-12T23:59:59.000Z

144

Neutrinos: Nature's Ghosts?  

SciTech Connect

Dr. Don Lincoln introduces one of the most fascinating inhabitants of the subatomic realm: the neutrino. Neutrinos are ghosts of the microworld, almost not interacting at all. In this video, he describes some of their properties and how they were discovered. Studies of neutrinos are expected to be performed at many laboratories across the world and to form one of the cornerstones of the Fermilab research program for the next decade or more.

Lincoln, Don

2013-06-18T23:59:59.000Z

145

Neutrino energy reconstruction problems and neutrino oscillations  

Science Journals Connector (OSTI)

We discuss the accuracy of the usual procedure for neutrino energy reconstruction which is based on the quasielastic kinematics. Our results are described in terms of a probability distribution for a real neutrino energy value. Several factors are responsible for the deviations from the reconstructed value. The main one is the multinucleon component of the neutrino interaction which in the case of Cherenkov detectors enters as a quasielastic cross section, increasing the mean neutrino energy which can differ appreciably from the reconstructed value. As an application we derive, for excess electron events attributed to the conversion of muon neutrinos, the true neutrino energy distribution based on the experimental one which is given in terms of the reconstructed value. The result is a reshaping effect. For MiniBooNE the low energy peak is suppressed and shifted at higher energies, which may influence the interpretation in terms of oscillation. For T2K at the Super Kamiokande far detector the reshaping translates into a narrowing of the energy distribution.

M. Martini; M. Ericson; G. Chanfray

2012-05-21T23:59:59.000Z

146

Neutrino energy reconstruction problems and neutrino oscillations  

E-Print Network (OSTI)

We discuss the accuracy of the usual procedure for neutrino energy reconstruction which is based on the quasielastic kinematics. Our results are described in terms of a probability distribution for a real neutrino energy value. Several factors are responsible of the deviations from the reconstructed value. The main one is the multinucleon component of the neutrino interaction which in the case of Cherenkov detectors enters as a quasielastic cross section, increasing the mean neutrino energy which can differ appreciably from the reconstructed value. As an application we derive, for excess electron events attributed to the conversion of muon neutrinos, the true neutrino energy distribution based on the experimental one which is given in terms of the reconstructed value. The result is a reshaping effect. For MiniBooNE the low energy peak is suppressed and shifted at higher energies, which may influence the interpretation in terms of oscillation. For T2K at the Super Kamiokande far detector the reshaping translates into a narrowing of the energy distribution.

M. Martini; M. Ericson; G. Chanfray

2012-02-21T23:59:59.000Z

147

Astrophysics with MILAGRO  

SciTech Connect

This paper describes how data from a new type of air shower detector, MILAGRO can shed light on a variety of interesting problems in astrophysics. MILAGRO has the capability to make observations of VHE/UHE emission from the recently discovered TeV gamma-ray source Markarian 421, an Active Galactic Nucleus (AGN). An observation of the attenuation of this signal in the range of 1--20 TeV can be used to make the first measurement of the intergalactic infrared radiation. We will also describe how MILAGRO can improve the existing limits on the density of Primordial Black Holes (PBH) by three orders of magnitude. Finally, we will discuss how this instrument can be used to measure the diffuse galactic emission of gamma-rays which must come from the disk.

The MILAGRO Collaboration

1993-05-01T23:59:59.000Z

148

Astrophysics with MILAGRO  

SciTech Connect

This paper describes how data from a new type of air shower detector, MILAGRO can shed light on a variety of interesting problems in astrophysics. MILAGRO has the capability to make observations of VHE/UHE emission from the recently discovered TeV gamma-ray source Markarian 421, an Active Galactic Nucleus (AGN). An observation of the attenuation of this signal in the range of 1--20 TeV can be used to make the first measurement of the intergalactic infrared radiation. We will also describe how MILAGRO can improve the existing limits on the density of Primordial Black Holes (PBH) by three orders of magnitude. Finally, we will discuss how this instrument can be used to measure the diffuse galactic emission of gamma-rays which must come from the disk.

Not Available

1993-01-01T23:59:59.000Z

149

Theoretical Particle Astrophysics  

SciTech Connect

Abstract: Theoretical Particle Astrophysics The research carried out under this grant encompassed work on the early Universe, dark matter, and dark energy. We developed CMB probes for primordial baryon inhomogeneities, primordial non-Gaussianity, cosmic birefringence, gravitational lensing by density perturbations and gravitational waves, and departures from statistical isotropy. We studied the detectability of wiggles in the inflation potential in string-inspired inflation models. We studied novel dark-matter candidates and their phenomenology. This work helped advance the DoE's Cosmic Frontier (and also Energy and Intensity Frontiers) by finding synergies between a variety of different experimental efforts, by developing new searches, science targets, and analyses for existing/forthcoming experiments, and by generating ideas for new next-generation experiments.

Kamionkowski, Marc

2013-08-07T23:59:59.000Z

150

Atmospheric Neutrino Fluxes  

E-Print Network (OSTI)

Starting with an historical review, I summarize the status of calculations of the flux of atmospheric neutrinos and how they compare to measurements.

Thomas K. Gaisser

2005-02-18T23:59:59.000Z

151

High Performance Computing (HPC) Division  

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

HPC Division High Performance Computing (HPC) Division Providing world-class high performance computing capability that enables unsurpassed solutions to complex problems of...

152

ANL Workshop on the EoS in Astrophysics - 2008  

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

Equation of State at Nonzero Density and Temperature, and its Equation of State at Nonzero Density and Temperature, and its Application in Astrophysics ANL Workshop, 25-29 August 2008, TheoryGroup in the ANL Physics Division JINA News Location Program 1st Circular Restaurants Links Contact News 08/30/08 - Last news on this workshop: It seems like everybody made it home safely. We take this opportunity to thank all our speakers and participants for their interesting and instructive contributions to this workshop. Thank you! 08/26/08 - Our workshop dinner will be held tomorrow, Wednesday 08/27 at the Saffron Restaurant on 6020 Cass Ave Westmont, IL 60559 at 7pm. Please gather at about 6:30pm at the entrance to the Physics Division's building to ensure everyone will be able to get to the restaurant. I'll collect the fee in advance.

153

On the Solar Neutrino Problems, SNO experimental data and low-energy nuclear forces  

E-Print Network (OSTI)

The Solar Neutrino Problems (SNP's) are analysed within the Standard Solar Model (BP2000) supplemented by the reduction of the solar neutrino fluxes through the decrease of the solar core temperature. The former can be realized through the enhancement of the astrophysical factor for solar proton burning. The enhancement, the upper bound of which is restricted by the helioseismological data, goes dynamically due to low-energy nuclear forces described at the quantum field theoretic level. The agreement of the reduced solar neutrino fluxes with the experimental data is obtained within the scenario of vacuum two-flavour neutrino oscillations. We show that by fitting the mean value of the solar neutrino flux measured by HOMESTAKE Collaboration we predict the high energy solar neutrino flux measured by SNO Collaboration Phi(SNO(Boron))_th = 1.84 X 10^6 cm^(-2) s^(-1) in good agreement with the experimental value Phi(SNO(Boron))_exp = 1.75(0.14) X 10^6 cm^(-2) s^(-1) obtained via the measurement of the rate of reaction nu_e + D -> p + p + electron produced by boron solar neutrinos. The theoretical flux for low-energy neutrino flux measured by GALLIUM (GALLEX, GNO and SAGE) Collaborations S(Ga)_th = 65 SNU agrees with the experimental data averaged over experiments S(Ga)_exp = 75.6(4.8) SNU.

A. N. Ivanov; H. Oberhummer; N. I. Troitskaya

2001-12-11T23:59:59.000Z

154

Dynamics of low-energy nuclear forces and Solar Neutrino Problems in the Nambu-Jona-Lasinio model of light nuclei  

E-Print Network (OSTI)

The Solar Neutrino Problems (SNP's) are analysed in the Nambu-Jona-Lasinio model of light nuclei. In this model a possible clue to the solution of the SNP's is in the reduction of the solar neutrino fluxes relative to the predicted by the Standard Solar Model through the decrease of the solar core temperature. The former can be realized through the enhancement of the astrophysical factor for the solar proton burning. The enhancement the upper bound of which is restricted by the helioseismological data goes dynamically via the contribution of the nucleon tensor current coupled to the deuteron. The agreement of the reduced solar neutrino fluxes with the experimental data can be reached within a scenario of vacuum two-flavour neutrino oscillations without a fine tuning of the neutrino-flavour oscillation parameters. In the Nambu-Jona-Lasinio model of light nuclei an enhancement of the astrophysical factor for the solar proton burning entails a change of the cross sections for neutrino and anti-neutrino disintegration of the deuteron at low energies. This provides a theoretical foundation for a new check of a value of the astrophysical factor in terrestrial laboratories.

A. N. Ivanov; H. Oberhummer; N. I. Troitskaya; M. Faber

2000-11-04T23:59:59.000Z

155

Three Puzzles from Nuclear Astrophysics  

E-Print Network (OSTI)

I discuss three open problems in astrophysics where nuclear physics can make important contributions: the solar abundance problem, dark matter particle detection, and the origin of the r-process elements.

W. C. Haxton

2012-10-04T23:59:59.000Z

156

Three Puzzles from Nuclear Astrophysics  

E-Print Network (OSTI)

I discuss three open problems in astrophysics where nuclear physics can make important contributions: the solar abundance problem, dark matter particle detection, and the origin of the r-process elements.

Haxton, W C

2012-01-01T23:59:59.000Z

157

Neutrino oscillations and the number of neutrino types  

Science Journals Connector (OSTI)

A brief treatment of neutrino oscillations, generalized to an arbitrary number of neutrino types, is given as the basis for design of a feasible experiment to search for neutrino oscillations using the neutrino beam produced at a high-energy proton accelerator.

A. K. Mann and H. Primakoff

1977-02-01T23:59:59.000Z

158

Principal Investigators | Biosciences Division  

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

Frank Collart Frank Collart BIO Home Page About BIO News Releases Research Publications People Contact Us Organization Chart Site Index Inside BIO BIO Safety About Argonne Frank Collart Biosciences Division Bldg: 202 Room: A-357 Email: fcollart@anl.gov Phone: (630) 252-4859 Fax: (630) 252-5517 Education Professional Experience Publication List Research Highlights > Education: 1984, Ph.D, Medical College of Ohio, Medical Sciences 1982, M.S., Bowling Green State University, Chemistry 1977, B.A., Bowling Green State University, Chemistry > Professional Experience: 1994-present: Molecular Biologist; Biosciences Division, Argonne National Laboratory. 1989-1994: Assistant Molecular Biologist; Division of Biological and Medical Research, Argonne National Laboratory. 1984-1989: Postdoctoral Appointee, Supervisor: Dr Eliezer Huberman; Division of Biological and Medical Research, Argonne National Laboratory.

159

Constraining Dark Matter and Dark Energy Models using Astrophysical Surveys  

E-Print Network (OSTI)

of current dark energy astrophysical surveys. Although manyMatter and Dark Energy Models using Astrophysical Surveys byMatter and Dark Energy Models using Astrophysical Surveys A

Cieplak, Agnieszka M.

160

r-Java 2.0: the astrophysics  

E-Print Network (OSTI)

[Context:] This article is the second in a two part series introducing r-Java 2.0, a nucleosynthesis code for open use that performs r-process calculations and provides a suite of other analysis tools. [Aims:] The first paper discussed the nuclear physics inherent to r-Java 2.0 and in this article the astrophysics incorporated into the software will be detailed. [Methods:] R-Java 2.0 allows the user to specify the density and temperature evolution for an r-process simulation. Defining how the physical parameters (temperature and density) evolve can effectively simulate the astrophysical conditions for the r-process. Within r-Java 2.0 the user has the option to select astrophysical environments which have unique sets of input parameters available for the user to adjust. In this work we study three proposed r-process sites; neutrino-driven winds around a proto-neutron star, ejecta from a neutron star merger and ejecta from a quark nova. The underlying physics that define the temperature and density evolution for each site is described in this work. [Results:] In this paper a survey of the available parameters for each astrophysical site is undertaken and the effect on final r-process abundance is compared. The resulting abundances for each site are also compared to solar observations both independently and in concert. R-Java 2.0 is available for download from the website of the Quark-Nova Project: http://quarknova.ucalgary.ca/

M. Kostka; N. Koning; Z. Shand; R. Ouyed; P. Jaikumar

2014-02-16T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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.


161

Neutrino Counter Nuclear Weapon  

E-Print Network (OSTI)

Radiations produced by neutrino-antineutrino annihilation at the Z0 pole can be used to heat up the primary stage of a thermonuclear warhead and can in principle detonate the device remotely. Neutrino-antineutrino annihilation can also be used as a tactical assault weapon to target hideouts that are unreachable by conventional means.

Tang, Alfred

2008-01-01T23:59:59.000Z

162

Solar Neutrino Physics  

SciTech Connect

With its heavy water target, the Sudbury Neutrino Observatory (SNO) offers the unique opportunity to measure both the 8B flux of electron neutrinos from the Sun and, independently, the flux of all active neutrino species reaching the Earth. A model-independent test of the hypothesis that neutrino oscillations are responsible for the observed solar neutrino deficit can be made by comparing the charged-current (CC) and neutral-current (NC) rates. This LDRD proposal supported the research and development necessary for an assessment of backgrounds and performance of the SNO detector and the ability to extract the NC/CC-Ratio. Particular emphasis is put upon the criteria for deployment and signal extraction from a discrete NC detector array based upon ultra-low background 3He proportional counters.

Bowles, T.J.; Brice, S.J.; Esch, E.-I.; Fowler, M.M.; Goldschmidt, A.; Hime, A.; McGirt, F.; Miller, G.G.; Thornewell, P.M.; Wilhelmy, J.B.; Wouters, J.M.

1999-07-15T23:59:59.000Z

163

J-PARC Correctors | Superconducting Magnet Division  

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

Magnet Construction Magnet Construction The final turn of the J-PARC extracted proton beam is a superconducting combined function magnet line. The combined function magnets are dipole cable magnets, typical of cold mass collared magnets, but have been designed to include a large component of quadrupole field. This provides both bending and focussing of the proton beam prior to target impact, where neutrinos will be produced. The BNL Superconducting Magnet Division is using its direct wind facility to produce superconducting corrector magnets to be used in conjunction with the combined function magnets. combined function magnet The first direct wind magnet set designed and fabricated is a combined function magnet with an additional skew dipole. This magnet is intended to be used within the cable collared combined function dipole used for the

164

Astrophysical thermonuclear functions  

E-Print Network (OSTI)

Stars are gravitationally stabilized fusion reactors changing their chemical composition while transforming light atomic nuclei into heavy ones. The atomic nuclei are supposed to be in thermal equilibrium with the ambient plasma. The majority of reactions among nuclei leading to a nuclear transformation are inhibited by the necessity for the charged participants to tunnel through their mutual Coulomb barrier. As theoretical knowledge and experimental verification of nuclear cross sections increases it becomes possible to refine analytic representations for nuclear reaction rates. Over the years various approaches have been made to derive closed-form representations of thermonuclear reaction rates (Critchfield 1972, Haubold and John 1978, Haubold, Mathai and Anderson 1987). They show that the reaction rate contains the astrophysical cross section factor and its derivatives which has to be determined experimentally, and an integral part of the thermonuclear reaction rate independent from experimental results which can be treated by closed-form representation techniques in terms of generalized hypergeometric functions. In this paper mathematical/statistical techniques for deriving closed-form representations of thermonuclear functions will be summarized and numerical results for them will be given. The separation of thermonuclear functions from thermonuclear reaction rates is our preferred result. The purpose of the paper is also to compare numerical results for approximate and closed-form representations of thermonuclear functions. This paper completes the work of Haubold, Mathai, and Anderson (1987).

William J. Anderson; Hans J. Haubold; Arak Mathai Mathai

1993-08-23T23:59:59.000Z

165

Measurement of the atmospheric neutrino energy spectrum from 100GeV to 400TeV with IceCube  

Science Journals Connector (OSTI)

A measurement of the atmospheric muon neutrino energy spectrum from 100GeV to 400TeV was performed using a data sample of about 18?000 up-going atmospheric muon neutrino events in IceCube. Boosted decision trees were used for event selection to reject misreconstructed atmospheric muons and obtain a sample of up-going muon neutrino events. Background contamination in the final event sample is less than 1%. This is the first measurement of atmospheric neutrinos up to 400TeV, and is fundamental to understanding the impact of this neutrino background on astrophysical neutrino observations with IceCube. The measured spectrum is consistent with predictions for the atmospheric ??+?? flux.

R. Abbasi et al. (IceCube Collaboration)

2011-01-05T23:59:59.000Z

166

Neutrino-neutrino interactions in a supernova and their effect on neutrino flavor conversions  

SciTech Connect

The neutrino-neutrino interactions inside a supernova core give rise to nonlinear collective effects that significantly influence the neutrino flavor conversions inside the star. I shall describe these interactions, the new oscillation phenomena they generate, and their effect on the neutrino fluxes arriving at the earth.

Dighe, Amol [Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400005 (India)

2011-11-23T23:59:59.000Z

167

Angular correlation of cosmic neutrinos with ultrahigh-energy cosmic rays and implications for their sources  

E-Print Network (OSTI)

Cosmic neutrino events detected by the IceCube Neutrino Observatory with energy $\\gtrsim 30$ TeV have poor angular resolutions to reveal their origin. Ultrahigh-energy cosmic rays (UHECRs), with better angular resolutions at $>60$ EeV energies, can be used to check if the same astrophysical sources are responsible for producing both neutrinos and UHECRs. We test this hypothesis, with statistical methods which emphasize invariant quantities, by using data from the Pierre Auger Observatory, Telescope Array and past cosmic-ray experiments. We find that the arrival directions of the cosmic neutrinos are correlated with $\\ge 100$ EeV UHECR arrival directions at confidence level $\\approx 93\\%$. The strength of the correlation decreases with decreasing UHECR energy and no correlation exists at energy $\\sim 60$ EeV. A search in astrophysical databases within $3^\\circ$ of the arrival directions of UHECRs with energy $\\ge 100$ EeV, that are correlated with the IceCube cosmic neutrinos, resulted in 18 sources from the S...

Moharana, Reetanjali

2015-01-01T23:59:59.000Z

168

People | Biosciences Division  

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

Lynda Dieckman Lynda Dieckman BIO Home Page About BIO News Releases Research Publications People Contact Us Organization Chart Site Index Inside BIO BIO Safety About Argonne Lynda Dieckman Bldg: 202 Room: B265 E-mail Lynda Dieckman Phone: (630) 252-3953 Full Information Research Highlights > Education: 1989, Ph.D, University of Cincinnati, Physiology and Biophysics 1985, M.S., Case Western Reserve, Biology 1981, B.S., John Carroll University, Biology > Professional Experience: 2008-present Functional Genomics Specialist, Biosciences Division, Argonne National Laboratory, Argonne, IL 2002-2008 Molecular Biologist/Environmental Safety and Health and Quality Assurance Coordinator, Biosciences Division, Argonne National Laboratory, Argonne, IL 1997-2002 Special Term Appointee, Biosciences Division, Argonne National Laboratory, Argonne, IL

169

Genomics Division Home  

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

PIs PIs Mark Biggin Jim Bristow Jan-Fang Cheng Inna Dubchak Suzanna Lewis Chris Mungall Len Pennacchio Eddy Rubin Axel Visel Divisional Information Support Staff Seminars Diversity Directory Contact Us The characterization and analysis of genome sequences from such diverse organisms as humans to the most primitive soil microbe represent a watershed opportunity for biology. The Genomics Division is taking advantage of this wealth of new information. While it is well known that DNA encodes the basic blue print of life, it is not known how best to interpret most of this information. To address this question, laboratories within the division are developing computational, biochemical, genetic, and imaging methods to decipher the complex sequence motifs that control RNA transcription, DNA replication, and chromosome structure. The Division is

170

Argonne Physics Division - ATLAS  

NLE Websites -- All DOE Office Websites

[Argonne Logo] [DOE Logo] [Argonne Logo] [DOE Logo] Physics Division Home News Division Information Contact Organization Chart Directory ES&H Scientific Staff Publications Awards & Honors Pictures & Videos New Faces PHY Webmail Meeting Rooms Research Low Energy Medium Energy Theory Accelerator R&D Research Highlights Seminars & Events Colloquium Division Seminar MEP Seminar Theory Seminar Heavy Ion Discussion Student Lunch Talk ATLAS arrowdn Facility Schedules User Info Proposals Targetlab CARIBU FMA Gammasphere GRETINA HELIOS AGFA Search Argonne ... Search ATLAS Facility User Info Proposals Beam Schedule Safety Gammasphere GRETINA FMA CARIBU HELIOS AGFA Targetlab Workshop 2009 25 Years of ATLAS Gretina Workshop ATLAS Gus Savard Guy Savard, Scientific Director of ATLAS Welcome to ATLAS, the Argonne Tandem Linac Accelerator System. ATLAS is the

171

Solar mass-varying neutrino oscillations  

E-Print Network (OSTI)

We propose that the solar neutrino deficit may be due to oscillations of mass-varying neutrinos (MaVaNs). This scenario elucidates solar neutrino data beautifully while remaining comfortably compatible with atmospheric neutrino and K2K data...

Marfatia, Danny; Huber, P.; Barger, V.

2005-11-18T23:59:59.000Z

172

BooNE: Booster Neutrino Experiment  

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

BooNE will investigate the question of neutrino mass by searching for oscillations of muon neutrinos into electron neutrinos. This will be done by directing a muon neutrino beam...

173

Neutrinos: Nature's Identity Thieves?  

ScienceCinema (OSTI)

The oscillation of neutrinos from one variety to another has long been suspected, but was confirmed only about 15 years ago. In order for these oscillations to occur, neutrinos must have a mass, no matter how slight. Since neutrinos have long been thought to be massless, in a very real way, this phenomena is a clear signal of physics beyond the known. In this video, Fermilab's Dr Don Lincoln explains how we know it occurs and hints at the rich experimental program at several international laboratories designed to understand this complex mystery.

Dr. Don Lincoln

2013-07-22T23:59:59.000Z

174

Neutrinos: Nature's Identity Thieves?  

SciTech Connect

The oscillation of neutrinos from one variety to another has long been suspected, but was confirmed only about 15 years ago. In order for these oscillations to occur, neutrinos must have a mass, no matter how slight. Since neutrinos have long been thought to be massless, in a very real way, this phenomena is a clear signal of physics beyond the known. In this video, Fermilab's Dr Don Lincoln explains how we know it occurs and hints at the rich experimental program at several international laboratories designed to understand this complex mystery.

Lincoln, Don

2013-07-11T23:59:59.000Z

175

Neutrinos: Nature's Identity Thieves?  

ScienceCinema (OSTI)

The oscillation of neutrinos from one variety to another has long been suspected, but was confirmed only about 15 years ago. In order for these oscillations to occur, neutrinos must have a mass, no matter how slight. Since neutrinos have long been thought to be massless, in a very real way, this phenomena is a clear signal of physics beyond the known. In this video, Fermilab's Dr Don Lincoln explains how we know it occurs and hints at the rich experimental program at several international laboratories designed to understand this complex mystery.

Lincoln, Don

2014-08-07T23:59:59.000Z

176

Nuclear astrophysics of supernovae  

SciTech Connect

In this paper, I'll give a general introduction to Supernova Theory, beginning with the presupernova evolution and ending with the later stages of the explosion. This will be distilled from a colloquium type of talk. It is necessary to have the whole supernova picture in one's mind's eye when diving into some of its nooks and crannies, as it is quite a mess of contradictory ingredients. We will have some discussion of supernova 1987a, but will keep our discussion more general. Second, we'll look at the infall and bounce of the star, seeing why it goes unstable, what dynamics it follows as it collapses, and how and why it bounces back. From there, we will go on to look at the equation of state (EOS) in more detail. We'll consider the cases T = 0 and T > 0. We'll focus on /rho/ < /rho//sub 0/, and then /rho/ > /rho//sub 0/ and the EOS of neutron stars, and whether or not they contain cores of strange matter. There are many things we could discuss here and not enough time. If I had more lectures, the remaining time would focus on two more questions of special interest to nuclear physicists: the electron capture reactions and neutrino transport. If time permitted, we'd have some discussion of the nucleosynthetic reactions in the explosion's debris as well. However, we cannot cover such material adequately, and I have chosen these topics because they are analytically tractable, pedagogically useful, and rather important. 23 refs., 14 figs., 3 tabs.

Cooperstein, J.

1988-01-01T23:59:59.000Z

177

Neutrinos and the synthesis of heavy elements: the role of gravity  

E-Print Network (OSTI)

The synthesis of heavy elements in the Universe presents several challenges. From one side the astrophysical site is still undetermined and on other hand the input from nuclear physics requires the knowledge of properties of exotic nuclei, some of them perhaps accessible in ion beam facilities. Black hole accretion disks have been proposed as possible r-process sites. Analogously to Supernovae these objects emit huge amounts of neutrinos. We discuss the neutrino emission from black hole accretion disks. In particular we show the influence that the black hole strong gravitational field has on changing the electron fraction relevant to the synthesis of elements.

Caballero, O L; McLaughlin, G C

2014-01-01T23:59:59.000Z

178

Neutrinos and the synthesis of heavy elements: the role of gravity  

E-Print Network (OSTI)

The synthesis of heavy elements in the Universe presents several challenges. From one side the astrophysical site is still undetermined and on other hand the input from nuclear physics requires the knowledge of properties of exotic nuclei, some of them perhaps accessible in ion beam facilities. Black hole accretion disks have been proposed as possible r-process sites. Analogously to Supernovae these objects emit huge amounts of neutrinos. We discuss the neutrino emission from black hole accretion disks. In particular we show the influence that the black hole strong gravitational field has on changing the electron fraction relevant to the synthesis of elements.

O. L. Caballero; R. Surman; G. C. McLaughlin

2014-10-28T23:59:59.000Z

179

Nuclear Astrophysics in Rare Isotope Facilities  

E-Print Network (OSTI)

Nuclear reactions in stars are difficult to measure directly in the laboratory at the small astrophysical energies. In recent years indirect methods with rare isotopes have been developed and applied to extract low-energy astrophysical cross sections.

C. A. Bertulani

2009-11-02T23:59:59.000Z

180

C-AD Accelerator Division  

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

Accelerator Division Accelerator Division The Accelerator Division operates and continually upgrades a complex of eight accelerators: 2 Tandem Van de Graaff electrostatic accelerators, an Electron Beam Ion Source (EBIS), a 200 MeV proton Linac, the AGS Booster, the Alternating Gradient Synchrotron (AGS), and the 2 rings of the Relativistic Heavy Ion Collider (RHIC). These machines serve user programs at the Tandems, the Brookhaven Linac Isotope Producer (BLIP), the NASA Space Radiation Laboratory (NSRL), and the 2 RHIC experiments STAR, and PHENIX. The Division also supports the development of new accelerators and accelerator components. Contact Personnel Division Head: Wolfram Fischer Deputy Head: Joe Tuozzolo Division Secretary: Anna Petway Accelerator Physics: Michael Blaskiewicz

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

Phenomenology of Neutrino Oscillations  

E-Print Network (OSTI)

The phenomenology of solar, atmospheric, supernova and laboratory neutrino oscillations is described. Analytical formulae for matter effects are reviewed. The results from oscillations are confronted with neutrinoless double beta decay.

G. Rajasekaran

2000-04-17T23:59:59.000Z

182

neutrino.html  

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

Fall 2000 Fall 2000 Tau Neutrino Evidence Announced at Fermilab This summer scientists at Fermi National Accelerator Laboratory announced the first direct evidence for the subatomic particle, the tau neutrino. The tau is an almost massless particle that carries no electric charge and barely interacts with surrounding matter. Previous experiments showed indirect evidence for its existence, but it had not been observed directly as yet. The tau is the third neutrino of the Standard Model of elementary particles, a theoretical description that groups all particles into three generations. The first electron neutrino was discovered in 1956, the muon in 1962. The Fermilab experiment responsible for the announcement is the Direct Observation of the Nu Tau (DONUT) experiment. DONUT is a collaboration of

183

Measuring Neutrino Interactions  

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

Measuring Neutrino Interactions with MiniBooNE R. Tayloe for the MiniBooNE collaboration Physics Department, Indiana University Bloomington, IN 47405, USA Abstract. The MiniBooNE...

184

Physics & Astrophysics press.princeton.edu  

E-Print Network (OSTI)

Physics & Astrophysics 2013 press.princeton.edu #12;in a nutshell 1 in a nutshell 2 princeton frontiers in physics 3 textbooks 7 astronomy & astrophysics 10 princeton series in astrophysics 12 physics 15 princeton series in physics 16 quantum physics 17 condensed matter 18 mathematics, mathematical

Landweber, Laura

185

integration division Human Systems  

E-Print Network (OSTI)

Vibration Test Facility incorporates state-of-the-art vibration generation and measurement hardwareintegration division Human Systems ISIS Vibration Test Facility Objective Approach Impact 1. Assess impact of flight-like whole-body vibration on human operational capabilities and ability to maintain

186

Chemistry Division Department of Biological  

E-Print Network (OSTI)

1 Chemistry Division Department of Biological and Chemical Sciences, Illinois Institute-13 Chemistry Division invites nominations for Kilpatrick Fellowship for the academic year 2012's Chemistry Department from 1947­1960. Mary Kilpatrick was a chemistry faculty member from 1947

Heller, Barbara

187

Energy Loss of Neutrinos in 20 M{sub {center_dot}} and 40 M{sub {center_dot}} Massive Stars  

SciTech Connect

The progress from the theoretical and experimental aspects in neutrino physics shines light into neutrino physics as well as in astrophysics. It is known that when neutrinos pass through a medium, the neutrinos interact with electrons before emerging from the stars with an effective potential energy produced due to coherent forward scatterings that occurred in the medium. This potential engenders significant changes in the neutrino masses and their mixing in the medium. Thus electron neutrinos would oscillate into different mass eigenstate and this is dependent on the energy of the neutrinos. Some of the energy will be lost in the coherent scattering with the electrons by the charged current interaction. We have calculated the energy loss of the neutrinos by using a stopping power equation for both rotating and non-rotating 20 M{sub {center_dot}} and 40 M{sub {center_dot}} stars. The total energy loss of neutrinos depends on the electron density in the stars and on the survival probability of the electron neutrino. For high electron density profile and the survival probability, the energy loss will be significant.

Sofiah Ahmad, Nor; Yusof, Norhasliza; Abu Kassim, Hasan [Department of Physics, University of Malaya, 50603 Kuala Lumpur (Malaysia)

2011-03-30T23:59:59.000Z

188

Neutrino Oscillations in 1. The Study of Neutrino Oscillations  

E-Print Network (OSTI)

... Currently there are three oscillation signal regions: #15; LSND #23; e ! #23; #22; ,#23; e ! #23; #22; separately #15; Atmospheric Neutrinos #23; #22; + #23; #22; disappearance #15; Solar Neutrinos #23; e is combination of two e#11;ects Proposed Matrixes for Neutrino Mixing (#23; 1 ; #23; 2 ; #23; 3 ) = M(#23; e

189

Advanced Neutrino Sources (Neutrino Factories and Beta Beams)  

E-Print Network (OSTI)

Advanced Neutrino Sources (Neutrino Factories and Beta Beams) · Design · R&D Status · Remaining R Meeting February, 2008 page 1 #12;· The stored beam properties & decay kinematics are well known uncertainties on neutrino flux & spectra are small PRECISION · Initial beams are flavor "pure" (BB) or "tagged

190

Results from Neutrino Oscillations Experiments  

SciTech Connect

The interpretation of the results of early solar and atmospheric neutrino experiments in terms of neutrino oscillations has been verified by several recent experiments using both, natural and man-made sources. The observations provide compelling evidence in favor of the existence of neutrino masses and mixings. These proceedings give a general description of the results from neutrino oscillation experiments, the current status of the field, and some possible future developments.

Aguilar-Arevalo, Alexis [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, Mexico, D.F., 04510 (Mexico)

2010-09-10T23:59:59.000Z

191

Superconducting Magnet Division  

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

3 - 6/13/06 3 - 6/13/06 Superconducting Magnet Division S&T Committee Program Review June 22-23, 2006 Conference Room A, Bldg. 725, BNL DRAFT AGENDA Thursday, June 22 0830 Executive Session to address the charge S. Aronson (25 min) 0855 Welcome S. Aronson (5 min) 0900 Superconducting Magnet Division Status & M. Harrison (45 + 15 min) Issues - mission statement, core competencies, themes, program, problems, etc. 1000 Themes - Nb3Sn, HTS, Direct wind, Accelerator integration, P. Wanderer (20 + 10 min) rapid cycling Core Competencies 1030 Superconducting Materials A. Ghosh (20 + 5 min) 1055 Break 1110 Magnetic Design R. Gupta (20 + 5 min) 1135 Magnet Construction M. Anerella (20 + 5 min) 1200 Magnet Testing G. Ganetis (20 + 5 min)

192

Division Name Will  

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

C O N TA C T > Claude B. Reed | f C O N TA C T > Claude B. Reed | f a x: 63 0- 25 2- 32 96 | C BR e e d@ anl . go v | Nuclear Engineering Division | www.ne.anl.gov Argonne National Laborator y, 9700 South Cass Avenue, Lemont, IL 60439 August 2013 Nuclear Engineering Division Proton beam on lithium film experiment for the FRIB stripper Argonne National Laboratory has developed a liquid lithium charge stripper for use in the Facility for Rare Isotope Beams (FRIB) located at Michigan State University. FRIB will provide intense beams of rare isotopes that cannot be handled by ordinary means, creating a challenge to find a workable concept for the charge stripper and to test it in a beamline environment. The advantages of liquid lithium are: a) the heat deposited on the medium is carried away by the fast moving

193

Life Sciences Division Home  

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

The vision of the Life Sciences Division is to advance basic knowledge, and The vision of the Life Sciences Division is to advance basic knowledge, and the health of humans and the biosphere, by elucidating the 4-Dimensional dynamics of complex biological systems -- ranging from molecules to microbes to humans. Research Highlights New Imaging Technique Identified to Monitor Progression of Heart Failure In a recent publication of Journal of Nuclear Medicine, a team of scientists from Berkeley Lab, the University of Utah, and UC San Francisco describe a new imaging technique used to monitor the progression of heart failure. More » Unlocking the Secrets of Proteins Cryoelectron microscopy is helping to unlock the secrets of proteins as never before, thanks to technology developed for one of the world's most powerful electron microscopes, TEAM, at Berkeley Lab's National Center for

194

Argonne Physics Division  

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

RBW RBW Robert B. Wiringa (the guy on the right) phone: 630/252-6134 FAX: 630/252-6008 e-mail: wiringa@anl.gov Biographical sketch 1972 B.S., Rensselaer Polytechnic Institute 1974 M.S., University of Illinois at Urbana-Champaign 1978 Ph.D., University of Illinois at Urbana-Champaign 1978-80 Research Associate, Los Alamos Scientific Laboratory 1981-83 Research Associate, Argonne National Laboratory 1983-87 Assistant Physicist, Argonne National Laboratory 1987-99 Physicist, Argonne National Laboratory 2000- Senior Physicist, Argonne National Laboratory Visiting appointments 1993 Visiting Associate & Lecturer, California Institute of Technology Honors, Organizations, Committees, etc. 1994-2001 Chief, Theory Group, Physics Division, Argonne National Laboratory 1997-2000 Webmaster, Division of Nuclear Physics, American Physical

195

Solar Neutrino Matter Effects Redux  

E-Print Network (OSTI)

Following recent low-threshold analysis of the Sudbury Neutrino Observatory and asymmetry measurements of the BOREXINO Collaboration of the solar neutrino flux, we revisit the analysis of the matter effects in the Sun. We show that solar neutrino data constrains the mixing angle $\\theta_{13}$ poorly and that subdominant Standard Model effects can mimic the effects of the physics beyond the Standard Model.

A. B. Balantekin; A. Malkus

2011-12-19T23:59:59.000Z

196

Supernova Neutrinos Detection On Earth  

E-Print Network (OSTI)

In this paper, we first discuss the detection of supernova neutrino on Earth. Then we propose a possible method to acquire information about $\\theta_{13}$ smaller than $1.5^\\circ$ by detecting the ratio of the event numbers of different flavor supernova neutrinos. Such an sensitivity cannot yet be achieved by the Daya Bay reactor neutrino experiment.

Xin-Heng Guo; Ming-Yang Huang; Bing-Lin Young

2009-05-12T23:59:59.000Z

197

Neutrino Oscillations Experiments at Fermilab  

E-Print Network (OSTI)

Neutrino oscillations provide an unique opportunity to probe physics beyond the Standard Model. Fermilab is constructing two new neutrino beams to provide a decicive test of two of the recent positive indications for neutrino oscillations: MiniBOONE experiment will settle the LSND controversy, MINOS will provide detailed studies of the region indicated by the SuperK results.

Adam Para

2000-05-01T23:59:59.000Z

198

Plasmon decay to a neutrino pair via neutrino electromagnetic moments in a strongly magnetized medium  

E-Print Network (OSTI)

We calculate the neutrino luminosity of a degenerate electron gas in a strong magnetic field via plasmon decay to a neutrino pair due to neutrino electromagnetic moments and obtain the relative upper bounds on the effective neutrino magnetic moment.

A. V. Borisov; P. E. Sizin

2014-06-12T23:59:59.000Z

199

Historic Sudbury Neutrino Observatory Data, Carried by ESnet, Lives on at  

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

Historic Sudbury Historic Sudbury Neutrino Observatory Data, Carried by ESnet, Lives on at NERSC Historic Sudbury Neutrino Observatory Data, Carried by ESnet, Lives on at NERSC January 26, 2010 | Tags: Astrophysics Contact: Linda Vu, lvu@lbl.gov, +1 510 486 2402 SNO.jpg SNO onsists of an 18-meters-in-diameter stainless steel geodesic sphere inside of which is an acrylic vessel filled with 1000 tons of heavy water (deuterium oxide or D2O). Attached to the sphere are 9,522 ultra-sensitive light-sensors called photomultiplier tubes. When neutrinos passing through the heavy water interact with deuterium nuclei, flashes of light are emitted. The photomultiplier tubes detect these light flashes and convert them into electronic signals that scientists can analyze for the presence

200

Neutrino Physics: A Selective Overview  

E-Print Network (OSTI)

Neutrinos in the Standard Model of particle physics are massless, neutral fermions that seemingly do little more than conserve 4-momentum, angular momentum, lepton number, and lepton flavour in weak interactions. In the last decade conclusive evidence has demonstrated that the Standard Model's description of neutrinos does not match reality. We now know that neutrinos undergo flavour oscillations, violating lepton flavour conservation and implying that neutrinos have non-zero mass. A rich oscillation phenomenology then becomes possible, including matter-enhanced oscillation and possibly CP violation in the neutrino sector. Extending the Standard Model to include neutrino masses requires the addition of new fields and mass terms, and possibly new methods of mass generation. In this review article I will discuss the evidence that has established the existence of neutrino oscillation, and then highlight unresolved issues in neutrino physics, such as the nature of three-generational mixing (including CP-violating effects), the origins of neutrino mass, the possible existence of light sterile neutrinos, and the difficult question of measuring the absolute mass scale of neutrinos.

Scott M. Oser

2006-04-11T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

Frederick Reines and the Neutrino  

Office of Scientific and Technical Information (OSTI)

Frederick Reines and the Detection of the Neutrino Frederick Reines and the Detection of the Neutrino Resources with Additional Information '[Frederick] Reines - known among scientists as the "father of neutrino physics" - won the Nobel Prize for physics in 1995 ["for the detection of the neutrino"], nearly 40 years after his neutrino experiments changed the world of physics and set in motion a new way of looking at the universe. ... Frederick Reines Courtesy University of California Irvine Until Reines's discovery, physicists had only theorized the existence of the neutrino - and physicists believed the tiny particles would never be detected. Reines's research laid the groundwork for new avenues of physics inquiry and hundreds of physics experiments that have tested central theories about the structure of our cosmos. The neutrino is one of the tiny spinning particles that are the building blocks of nature. ...

202

Nonstandard neutrino interactions and transition magnetic moments  

We constrain generic nonstandard neutrino interactions with existing experimental data on neutrino transition magnetic moments and derive strong bounds on tensorial couplings of neutrinos to charged fermions. We also discuss how some of these tensorial couplings can be constrained by other experiments, e.g., on neutrino-electron and neutrino-nucleus scattering.

Healey, Kristopher J.; Petrov, Alexey A.; Zhuridov, Dmitry

2013-06-01T23:59:59.000Z

203

Environmental Protection Division  

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

Site Details Site Details EPD Home Staff List (pdf) Org Chart (pdf) Compliance / Permits Programs Other Information Land Use & Institutional Controls Mapping Site Environmental Reports Environmental Monitoring Plan (EMP) Spill Response BNL Site Index Can't View PDFs? Developing Environmental Products and Services for Brookhaven Stakeholders The Environmental Protection Division (EPD) develops and delivers environmental products and services for all Brookhaven stakeholders. We manage environmental programs such as pollution prevention, groundwater protection, and natural resource management; provide technical assistance on environmental requirements; maintain the Laboratory's IS0 14001-registered Environmental Management System; prepare environmental permit applications; conduct environmental monitoring; manage data

204

Low Mach Number Models in Computational Astrophysics  

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

We often associate astrophysics with explosive phenomena: novae supernovae gamma-ray bursts X-ray bursts Type Ia Supernovae Largest thermonuclear explosions in the universe...

205

Nuclear astrophysics with light nuclei at GANIL  

SciTech Connect

A short review of several experimental investigations related to astrophysical interests is presented. These experiments were performed at GANIL using radioactive beams produced by the Spiral Facility.

Oliveira Santos, Francois de [GANIL, CEA/DSM-CNRS/IN2P3, Caen (France)

2011-10-28T23:59:59.000Z

206

Microsoft Word - Nuclear_Astrophysics_Summary  

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

were several conclusions reached during the session regarding the future direction of the ATLAS facility. The consensus of the astrophysics working group was that there is very...

207

Environmental Assessment for Conducting Astrophysics and Other...  

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

Liquid Nitrogen Underground System HEPA high-efficiency particulate air IDLH immediately dangerous to life and health INPAC Institute for Nuclear and Particle Astrophysics and...

208

Laser-Compton backscattering for nuclear astrophysics  

SciTech Connect

Using ?-ray beams for experimental nucleosynthesis study forms a new branch of nuclear astrophysics. I introduce typical experimental investigations and give a future prospect of this branch.

Utsunomiya, Hiroaki [Department of Physics, Konan University, 8-9-1, Okamoto, Higashinada, Kobe 658-85-1, Japan and The Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)

2014-05-09T23:59:59.000Z

209

Plasma Astrophysics | Princeton Plasma Physics Lab  

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

Plasma Astrophysics One of the most common but least understood phenomena in the universe is an explosive process called magnetic reconnection. PPPL's Magnetic Reconnection...

210

Experimental Neutrino Physics  

ScienceCinema (OSTI)

In this talk, I will review how a set of experiments in the last decade has given us our current understanding of neutrino properties. I will show how experiments in the last year or two have clarified this picture, and will discuss how new experiments about to start will address remaining questions. I will particularly emphasizethe relationship between various experimental techniques.

Chris Walter

2010-01-08T23:59:59.000Z

211

Observational Neutrino Astronomy  

Science Journals Connector (OSTI)

...models and nu-clear energy generation in stars...from stars, high-energy neutrino experiments...an Olympic-sized swimming pool. The most impor-tant...VOL. 147 percent efficiency) by the simple pro-cedure...neu-trino of a given energy, incident on a Cl...

John N. Bahcall

1965-01-08T23:59:59.000Z

212

Operations Division at Berkeley Lab  

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

Box DivisionsDepartments Suggestions Search: Go | Advanced Emergency Action Guide Quick Reference LBNL Emergency Preparedness Website LBNL Emergency Preparedness Employee Pocket...

213

Los Alamos Lab: Bioscience Division  

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

Serves the Nation by Reducing Threats to Humans and the Environment Welcome to Bioscience Division Our research integrates biology, chemistry, physics, and computational sciences...

214

UNIVERSITY OF CALIFORNIA, SANTA CRUZ DEPARTMENT OF ASTRONOMY AND ASTROPHYSICS  

E-Print Network (OSTI)

UNIVERSITY OF CALIFORNIA, SANTA CRUZ DEPARTMENT OF ASTRONOMY AND ASTROPHYSICS Ongoing Lecture Pool in Astronomy and Astrophyics THE DEPARTMENT OF ASTRONOMY AND ASTROPHYSICS at the University of California, the solar system, stellar structure and evolution, planets, high energy astrophysics, extragalactic

California at Santa Cruz, University of

215

BooNE: Booster Neutrino Experiment  

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

Posters What's a Neutrino? How neutrinos fit into our understanding of the universe. Recipe for a Neutrino Beam Start with some protons... concocting the MiniBooNE beam. The...

216

BooNE: Booster Neutrino Experiment  

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

CA A Search for numu Disappearance with SciBooNE and MiniBooNE PowerPoint Z. Pavlovic Low Energy Neutrino Oscillations G. Zeller Neutrino-Nucleus Cross Sections G. Mills Neutrino...

217

On the Detection of the Free Neutrino  

DOE R&D Accomplishments (OSTI)

The experiment previously proposed [to Detect the Free Neutrino] has been initiated, with a Hanford pile as a neutrino source. It appears probable that neutrino detection has been accomplished, and confirmatory work is in progress. (K.S.)

Reines, F.; Cowan, C. L., Jr.

1953-08-06T23:59:59.000Z

218

E-Print Network 3.0 - astrophysical applications spectroscopie...  

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

astrophysics covering the basics ... Source: Nahar, Sultana Nurun - Department of Astronomy, Ohio State University Collection: Physics 3 LABORATORY ASTROPHYSICS WHITE PAPER...

219

Workshop on Thermonuclear Reaction Rates for Astrophysics Applications  

E-Print Network (OSTI)

Workshop on Thermonuclear Reaction Rates for Astrophysics Applications 24-25 November 2011, Athensrd and final circular for the Workshop on Thermonuclear Reaction Rates for Astrophysics Applications

220

Principal Investigators | Biosciences Division  

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

R. Michael Miller R. Michael Miller BIO Home Page About BIO News Releases Research Publications People Contact Us Organization Chart Site Index Inside BIO BIO Safety About Argonne R. Michael Miller Bldg: 203 Room: E161 9700 South Cass Avenue Argonne, Illinois 60439 Email: rmmiller@anl.gov Phone: (630) 252-3395 Fax: (630) 252-8895 Research Highlights Publications > Education: 1975 Ph.D., Illinois State University, Botany and Mycology 1971 M.S., Illinois State University, Biological Sciences 1969 B.S., Colorado State University, Botany > Professional Experience: 2005-current Senior Terrestrial Ecologist, Biosciences Division, Argonne National Laboratory 2007-current Senior Fellow, Institute for Genomic & Systems Biology, University of Chicago and Argonne National Laboratory 2006-2008

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

Former Sites Restoration. Division  

Office of Legacy Management (LM)

@j&s* **$r* :. .+:., @j&s* **$r* :. .+:., II' .,.. I .&i. , :"': T.1 . i *&+t&&., @i i -:.+; L I. * . . .p.isit-!'..r'ir~i _, +.&.., . I. :?I,?.* .L,! j?' aa&* pi 4 L', ..b,- ., .e /w.1( ,v_.c ~A&$?>*:, ,..:.' .1 > . . . . . *. ,.. .I., .( j .~.~:,;;,.".,Certificafion ,Dockef for The ;,il' t:i~>$:+-.. ~~y:Remeciial Action. Performed "' . ::;:cxcgt the @+zb Gate Site in . ;' ! ,Oak Ridge, Tennessee, 7.99 7- 7 992 -.. Department .of Energy Former Sites Restoration. Division . ,Oak Ridge Operations .Office _. February 7 994 @ Printed on recycledhcy&ble paper. CERTIFICATION DOCKET FOR THE REMEDIAL ACTION PERFORMED AT THE ELZA GAP SITE IN OAK RIDGE, TENNESSEE, 1991-1992 FEBRUARY 1994 I Prepared for UNITED STATES DEPARTMENT OF ENERGY

222

Argonne Physics Division - ATLAS  

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

Safety Safety General Radiation Electrical Experiment Safety at ATLAS The Management and Staff at ATLAS and Argonne National Laboratory are fully dedicated to integrating safety into all aspects of work at our facilities. We believe that it is completely possible, and absolutely essenital, to carry out effective research programs without compromising safety. Indeed, the process of incorporating safety into accelerator operations and experimental research begins at the earliest stages. All experiments, equipment, and procedures are reviewed extensively for safety issues prior to their approval. For onsite emergencies, call 911 on the internal phones (or 252-1911 on cell phones) Safety Tom Mullen, Physics Division Safety Engineer. Please Note: If you have any comments or concerns regarding safety at

223

News Releases | Biosciences Division  

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

News Releases News Releases BIO Home Page About BIO News Releases Research Publications People Contact Us Organization Chart Site Index Inside BIO BIO Safety About Argonne Biosciences Division News Releases Protein crystal samples are placed on a small metal tip so X-rays from the adjacent beam pipe can pass through them and diffract off the atoms inside the crystal. Lessening X-ray damage is healthy for protein discovery data too December 16, 2013 - New recommendations for using X-rays promise to speed investigations aimed at understanding the structure and function of biologically important proteins - information critical to the development of new drugs. Read more. Kayakers and boats traverse the branch of the Chicago River in the downtown area Argonne partners with Metropolitan Water Reclamation District to study Chicago River microbe population

224

Eastern Audits Division  

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

Work Plan for FY 2014 Work Plan for FY 2014 Eastern Audits Division  Follow-up of the Reindustrialization Program at East Tennessee Technology Park  Audit of the Department's Management of High-Risk Property  Audit of the Department's Efforts to Reduce Mercury Contamination at the Y-12 National Security Complex  Non-conforming Equipment and Parts at the Savannah River Site  Audit of the Department's Facility Contractors' Use of No Bid Subcontracts  Decontamination and Decommissioning Activities at the Oak Ridge National Laboratory  The Department's Audit Resolution and Follow-up Process  Legacy Management Activities at Selected Sites  Department's Contract Awards Made to Alaska Native Corporation  Readiness of the Saltstone Disposal Facility at the Savannah River Site

225

Guidance Systems Division ,  

Office of Legacy Management (LM)

Oockec No. 10-0772 Oockec No. 10-0772 22 OCT 1981 Bcndlx CorporaLion ' Guidance Systems Division , ATTN: Mr. Wf 11 la,,, Hnrr,,or Manngar, PlanL Englne0rtny Teterboro, New Jersey 07608 uwm STATES NUCLEAll I-IEOULATOIJY COMMISSION REGION i 631 PARK A"LH"I KIN0 OF PR"ISIA. PCNNIVLVANIA ID40' Gentlemen: Subject: Inspectfon 81-15 _ "-- .,; .z .;; Thts refers to the closeout safety \nspectlon conducted by Ms. M. Campbell of this office on August 27, 1961, of activities formerly authorized by NRC License No. STB-424 and to the c!lscussions of our findings held by f4s. Campbell with yourseif aL Lhe conclusion of the inspection. This closeout inspection. was conducted as part of an NRC effort to ensure that facilities where,llcensed activities were forxrrly conducted meet current NRC criteria for release for

226

Toward CP-even Neutrino Beam  

E-Print Network (OSTI)

The best method of measuring CP violating effect in neutrino oscillation experiments is to construct and use a neutrino beam made of an ideal mixture of $\\bar{\

A. Fukumi; I. Nakano; H. Nanjo; N. Sasao; S. Sato; M. Yoshimura

2006-12-20T23:59:59.000Z

227

Low-energy solar anti-neutrinos  

E-Print Network (OSTI)

If neutrino conversions within the Sun result in partial polarization of initial solar neutrino fluxes, then a new opportunity arises to observe the anti-\

V. B. Semikoz; S. Pastor; J. W. F. Valle

1998-08-13T23:59:59.000Z

228

Systems Division NO. REV. NO.  

E-Print Network (OSTI)

Aerospace Systems Division NO. REV. NO. EATM-17 PCU - SOLAR PANEL SIMULATOR TEST REPORT:' Courtois ~ll~K. Hsi #12;MO. REV. MO. EATM-17 ~ Systems Division PCU - Solar Panel Simulator Test Report Conditioning Unit (PCU) is compatible with a solar panel array. The Solar Panel Simulator and the PCU Test Set

Rathbun, Julie A.

229

Muon colliders and neutrino factories  

SciTech Connect

Over the last decade there has been significant progress in developing the concepts and technologies needed to produce, capture and accelerate {Omicron}(10{sup 21}) muons/year. This development prepares the way for a new type of neutrino source (Neutrino Factory) and a new type of very high energy lepton-antilepton collider (Muon Collider). This article reviews the motivation, design and R&D for Neutrino Factories and Muon Colliders.

Geer, S.; /Fermilab

2010-09-01T23:59:59.000Z

230

Quantum Coherence of Relic Neutrinos  

Science Journals Connector (OSTI)

We argue that in at least a portion of the history of the Universe the relic background neutrinos are spatially extended, coherent superpositions of mass states. We show that an appropriate quantum mechanical treatment affects the neutrino mass values derived from cosmological data. The coherence scale of these neutrino flavor wave packets can be an appreciable fraction of the causal horizon size, raising the possibility of spacetime curvature-induced decoherence.

George M. Fuller and Chad T. Kishimoto

2009-05-22T23:59:59.000Z

231

Neutrino mass matrix with U(2) flavor symmetry and neutrino oscillations  

Science Journals Connector (OSTI)

The three neutrino mass matrices in the SU(5)U(2) model are studied focusing on neutrino oscillation experiments. The atmospheric neutrino anomaly could be explained by a large ??-?? oscillation. The long baseline experiments are expected to detect signatures of the neutrino oscillation even if the atmospheric neutrino anomaly is not due to the neutrino oscillation. However, the model cannot solve the solar neutrino deficit while it could be reconciled with the LSND data.

Morimitsu Tanimoto

1998-02-01T23:59:59.000Z

232

Miniconference on astrophysical jets P. M. Bellan  

E-Print Network (OSTI)

and numerical modelers of both astrophysical jets and spheromaks, and laboratory experimentalists. The purpose-organization. Spheromaks have been studied for the last two decades and most recently, it has been realized that the physics of spheromak formation has much in common with magnetohydrodynamically driven astrophysical jets

Bellan, Paul M.

233

Environmental Energy Technologies Division News  

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

9, No. 1 [http://eetd.lbl.gov/newsletter/nl32/] 9, No. 1 [http://eetd.lbl.gov/newsletter/nl32/] Environmental Energy Technologies Division News [http://eetd.lbl.gov/newsletter/] © 2010 Environmental Energy Technologies Division [http://eetd.lbl.gov/] E.O. Lawrence Berkeley National Laboratory [http://www.lbl.gov/] Disclaimer [http://www.lbl.gov/Disclaimers.html] SUMMER NEWSLETTER: VOL. 9, NO. 1 Ashok Gadgil Named Director of Environmental Energy Technologies Division Arsenic Removal Technologies ARPA-E Funding Low-Energy Buildings User Facility ECMA International Standard U.S. Wind Power Market Clean Energy Ministerial Research Highlights Sources and Credits A new Division Director for the Environmental Energy Technologies Division of Lawrence Berkeley National Laboratory, a story about one of his research team's projects to remove naturally-

234

Nuclear Science and Engineering - Divisions  

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

Home Home NSED Divisions The Nuclear Science and Engineering Directorate (NSED) organization is composed of ORNL's only DOE Energy Innovation Hub, a program office, and the following five divisions. Fuel Cycle and Isotopes Division (FCID) FCID focuses on advancing the applications of medical, industrial, and research isotopes (developing separation processes for the processing of radioisotopes and spent nuclear fuels) and designing robotic systems and unique facilities for the safe handling of nuclear materials. Fusion Energy Division (FE) FE is developing the understanding required for an attractive fusion energy source through integrated research, and is pursuing near term applications of plasma science and technology in support of national goals. Global Nuclear Security Technology Division (GNSTD)

235

Phenomenology of Absolute Neutrino Masses  

E-Print Network (OSTI)

The phenomenology of absolute neutrino masses is reviewed, focusing on tritium beta decay, cosmological measurements and neutrinoless double-beta decay.

Carlo Giunti

2004-12-11T23:59:59.000Z

236

Neutrino Oscillations from String Theory  

E-Print Network (OSTI)

We derive the character of neutrino oscillations that results from a model of equivalence principle violation suggested recently by Damour and Polyakov as a plausible consequence of string theory. In this model neutrino oscillations will take place through interaction with a long range scalar field of gravitational origin even if the neutrinos are degenerate in mass. The energy dependence of the oscillation length is identical to that in the conventional mass mixing mechanism. This possibility further highlghts the independence of and need for more exacting direct neutrino mass measurements together with a next generation of neutrinoless double beta decay experiments.

A. Halprin; C. N. Leung

1997-07-21T23:59:59.000Z

237

Neutrino Factory Feasibility Study  

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

6-1 - 6-1 - April 15 th , 2000 6. Cooling 6.1 Introduction The goal of this six-month study is an integrated design for a neutrino source, subject to realistic engineering constraints. As will become evident, the coupling between the cooling-channel design and the design of the upstream components is critical to achieving the best performance. Nevertheless, to make sufficiently rapid progress it has been necessary to design the various components semi-independently, then optimize and iterate to converge towards an integrated design. While we have not yet arrived at a fully optimized design, we have studied sufficiently the cooling channels described below to determine that their performance is limited primarily by the performance of the current phase-rotation and buncher designs. While the designs presented here suffice for an entry-level neutrino factory (10

238

Acoustic detection of neutrinos  

Science Journals Connector (OSTI)

When high energy neutrinosinteract with nucleons in the ocean a jet of hadrons is produced which deposits thermal energy. This thermal energy is expected to produce a sonic pulse which hopefully will be sufficiently intense and directional to enable the energy and direction of incidence of the primary neutrino to be determined [Antares Parvulescu J. Acoust. Soc. Am. 61 580(A) (1977)]. This paper discusses the physical mechanism whereby the energy of the neutrino is converted into a sound pulse. A simple model will be exploited to account for the signature expected from such an event. [Work supported in part by the U. S. Naval Ocean Research and Development Activity and by the U. S. Department of Energy.

Peter J. Westervelt

1978-01-01T23:59:59.000Z

239

Quasivacuum solar neutrino oscillations  

Science Journals Connector (OSTI)

We discuss in detail solar neutrino oscillations with ?m2/E in the range [10-10,10-7]?eV2/MeV. In this range, which interpolates smoothly between the so-called just-so and Mikheyev-Smirnov-Wolfenstein oscillation regimes, neutrino flavor transitions are increasingly affected by matter effects as ?m2/E increases. As a consequence, the usual vacuum approximation has to be improved through the matter-induced corrections, leading to a quasivacuum oscillation regime. We perform accurate numerical calculations of such corrections, using both the true solar density profile and its exponential approximation. Matter effects are shown to be somewhat overestimated in the latter case. We also discuss the role of Earth crossing and of energy smearing. Prescriptions are given to implement the leading corrections in the quasivacuum oscillation range. Finally, the results are applied to a global analysis of solar ? data in a three-flavor framework.

G. L. Fogli; E. Lisi; D. Montanino; A. Palazzo

2000-10-25T23:59:59.000Z

240

The KM3NeT deep-sea neutrino telescope  

E-Print Network (OSTI)

KM3NeT is a deep-sea research infrastructure being constructed in the Mediterranean Sea. It will host the next generation Cherenkov neutrino telescope and nodes for a deep sea multidisciplinary observatory, providing oceanographers, marine biologists, and geophysicists with real time measurements. The neutrino telescope will complement IceCube in its field of view and exceed it substantially in sensitivity. Its main goal is the detection of high energy neutrinos of astrophysical origin. The detector will have a modular structure with six building blocks, each consisting of about one hundred Detection Units (DUs). Each DU will be equipped with 18 multi-PMT digital optical modules. The first phase of construction has started and shore and deep-sea infrastructures hosting the future KM3NeT detector are being prepared offshore Toulon, France and offshore Capo Passero on Sicily, Italy. The technological solutions for the neutrino detector of KM3NeT and the expected performance of the neutrino telescope are present...

Margiotta, Annarita

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

Neutrinos in the Electron  

E-Print Network (OSTI)

We will show that one half of the rest mass of the electron is equal to the sum of the rest masses of electron neutrinos and that the other half of the rest mass of the electron is given by the energy in the sum of electric oscillations. With this composition we can explain the rest mass, the electric charge, the spin and the magnetic moment of the electron.

E. L. Koschmieder

2006-09-26T23:59:59.000Z

242

Observables in Neutrino Mass Spectroscopy Using Atoms  

E-Print Network (OSTI)

The process of collective de-excitation of atoms in a metastable level into emission mode of a single photon plus a neutrino pair, called radiative emission of neutrino pair (RENP), is sensitive to the absolute neutrino mass scale, to the neutrino mass hierarchy and to the nature (Dirac or Majorana) of massive neutrinos. We investigate how the indicated neutrino mass and mixing observables can be determined from the measurement of the corresponding continuous photon spectrum taking the example of a transition between specific levels of the Yb atom. The possibility of determining the nature of massive neutrinos and, if neutrinos are Majorana fermions, of obtaining information about the Majorana phases in the neutrino mixing matrix, is analyzed in the cases of normal hierarchical, inverted hierarchical and quasi-degenerate types of neutrino mass spectrum. We find, in particular, that the sensitivity to the nature of massive neutrinos depends critically on the atomic level energy difference relevant in the RENP.

D. N. Dinh; S. T. Petcov; N. Sasao; M. Tanaka; M. Yoshimura

2012-09-21T23:59:59.000Z

243

Astrophysical  

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

Table Table 2.1. Revised 2000 by D.E. Groom (LBNL). The figures in parentheses after some values give the one-standard deviation uncertainties in the last digit(s). Physical constants are from Ref. 1. While every effort has been made to obtain the most accurate current values of the listed quantities, the table does not represent a critical review or adjustment of the constants, and is not intended as a primary reference. c speed of light Value: 299 792 458 m s -1 defined Ref. [2] G N Newtonian gravitational constant Value: 6.673(10) × 10 -11 m 3 kg -1 s -2 Ref. [3] au astronomical unit (mean ⊕- distance) Value: 149 597 870 660(20) m Ref. [4, 5] yr tropical year (equinox to equinox) (2001.0) Value: 31 556 925.2 s Ref. [4] sidereal year (fixed star to fixed star) (2001.0) Value: 31 558 149.8 s Ref. [4] mean sidereal day (2001.0) Value: 23 h 56 m 04. s 090 53 Ref. [4] Jy Jansky Value: 10 -26 W m -2 Hz -1 ~c/G N Planck

244

ON SOLAR NEUTRINO PROBLEM TIAN MA AND SHOUHONG WANG  

E-Print Network (OSTI)

ON SOLAR NEUTRINO PROBLEM TIAN MA AND SHOUHONG WANG Abstract. The current neutrino oscillation an alternative resolution to the solar neutrino loss problem. Contents 1. Introduction 1 2. Discrepancy of Solar, there are three flavors of neutrinos: the electron neutrino e, the tau neutrino and the mu neutrino µ. The solar

245

ENERGY & ENVIRONMENT DIVISION ANNUAL REPORT 1979  

E-Print Network (OSTI)

Division of Distributed Solar Technology Contractors' Pro-Division of Distributed Solar Technology Insolation Assess-view argues that solar technologies should not be developed.

Cairns, E.J.

2010-01-01T23:59:59.000Z

246

EARTH SCIENCES DIVISION ANNUAL REPORT 1978  

E-Print Network (OSTI)

of Energy's Division of Geothermal Energy has undertaken aand Ghormley, E. L. , 1976. Geothermal energy conversion andof the Division of Geothermal Energy, and is compatible with

Authors, Various

2012-01-01T23:59:59.000Z

247

ENERGY & ENVIRONMENT DIVISION ANNUAL REPORT 1979  

E-Print Network (OSTI)

Population Impacts of Geothermal Energy Development in thethe DOE Division of Geothermal Energy. S. L. Phillips and E.to DOE Division of Geothermal Energy, January 30, 1980.

Cairns, E.J.

2010-01-01T23:59:59.000Z

248

Vacuum neutrino oscillations of solar neutrinos and lepton mass matrices  

Science Journals Connector (OSTI)

We consider the case that the solar neutrino deficit is due to vacuum oscillations. The lepton mass matrices with nearly bimaximal mixings are needed in order to explain both the solar and atmospheric neutrino deficit. A texture with the symmetry of flavor democracy or S3 has been investigated by taking account of the symmetry breaking terms of the charged lepton mass matrix. It is found that predicted mixings can be considerably changed from the neutrino mixings sin22???1 and sin22?atm?8/9 at the symmetric limit. The correlation between |Ue3| and |Ue1Ue2*| is also presented. The test of the model is discussed by focusing on the three flavor analyses in the solar neutrinos, atmospheric neutrinos, and long baseline experiments.

Morimitsu Tanimoto

1998-12-11T23:59:59.000Z

249

Lepton textures and neutrino oscillations  

E-Print Network (OSTI)

Systematic analyses of the textures arising in lepton mass matrices have been carried out using unitary transformations and condition of naturalness for the Dirac and Majorana neutrino possibilities. It is observed that the recent three neutrino oscillation data together with the effective mass in neutrinoless double beta decay provide vital clues in predicting the general structures of these lepton mass matrices.

Verma, Rohit

2014-01-01T23:59:59.000Z

250

TANAMI counterparts to IceCube high-energy neutrino events  

E-Print Network (OSTI)

Since the discovery of a neutrino flux in excess of the atmospheric background by the IceCube Collaboration, searches for the astrophysical sources have been ongoing. Due to the steeply falling background towards higher energies, the PeV events detected in three years of IceCube data are the most likely ones to be of extraterrestrial origin. Even excluding the PeV events detected so far, the neutrino flux is well above the atmospheric background, so it is likely that a number of sub-PeV events originate from the same astrophysical sources that produce the PeV events. We study the high-energy properties of AGN that are positionally coincident with the neutrino events from three years of IceCube data and show the results for event number 4. IC 4 is a event with a low angular error (7.1$^\\circ$) and a large deposited energy of 165 TeV. We use multiwavelength data, including Fermi/LAT and X-ray data, to construct broadband spectra and present parametrizations of the broadband spectral energy distributions with lo...

Krau, Felicia; Baxter, Claire; Kadler, Matthias; Mannheim, Karl; Ojha, Roopesh; Grfe, Christina; Mller, Cornelia; Wilms, Joern; Carpenter, Bryce; Schulz, Robert; TANAMI, on behalf of the

2015-01-01T23:59:59.000Z

251

IceCube: An Instrument for Neutrino Astronomy  

E-Print Network (OSTI)

An Instrument for Neutrino Astronomy Francis Halzen 1 andAn Instrument for Neutrino Astronomy Francis Halzen 1 and94720 Abstract Neutrino astronomy beyond the Sun was first

Halzen, F.

2010-01-01T23:59:59.000Z

252

Microsoft PowerPoint - MiniBooNE Neutrino 2008  

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

Oscillation Searches Steve Brice (Fermilab) for the MiniBooNE Collaboration Neutrino 2008 Neutrino 2008 Steve Brice (FNAL) 2 Outline * Electron Neutrino Appearance - Oscillation...

253

Geo-neutrinos: recent developments  

E-Print Network (OSTI)

Radiogenic heating is a key component of the energy balance and thermal evolution of the Earth. It contributes to mantle convection, plate tectonics, volcanoes, and mountain building. Geo-neutrino observations estimate the present radiogenic power of our planet. This estimate depends on the quantity and distribution of heat-producing elements in various Earth reservoirs. Of particular geological importance is radiogenic heating in the mantle. This quantity informs the origin and thermal evolution of our planet. Here we present: currently reported geo-neutrino observations; estimates of the mantle geo-neutrino signal, mantle radiogenic heating, and mantle cooling; a comparison of chemical Earth model predictions of the mantle geo-neutrino signal and mantle radiogenic heating; a brief discussion of radiogenic heating in the core, including calculations of geo-neutrino signals per pW/kg; and finally a discussion of observational strategy.

Dye, Steve

2014-01-01T23:59:59.000Z

254

Scaling Extreme Astrophysical Phenomena to the Laboratory  

SciTech Connect

High-energy-density (HED) physics refers broadly to the study of macroscopic collections of matter under extreme conditions of temperature and density. The experimental facilities most widely used for these studies are high-power lasers and magnetic-pinch generators. The HED physics pursued on these facilities is still in its infancy, yet new regimes of experimental science are emerging. Examples from astrophysics include work relevant to planetary interiors, supernovae, astrophysical jets, and accreting compact objects (such as neutron stars and black holes). In this paper, we review a selection of recent results in this new field of HED laboratory astrophysics and provide a brief look ahead to the coming decade.

Remington, B A

2007-11-01T23:59:59.000Z

255

Patents: Nuclear Engineering Division (Argonne)  

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

About the Division > Patents About the Division > Patents Director's Welcome Organization Achievements Awards Patents Professional Societies Highlights Fact Sheets, Brochures & Other Documents Multimedia Library About Nuclear Energy Nuclear Reactors Designed by Argonne Argonne's Nuclear Science and Technology Legacy Opportunities within NE Division Visit Argonne Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Celebrating the 70th Anniversary of Chicago Pile 1 (CP-1) Argonne OutLoud on Nuclear Energy Argonne Energy Showcase 2012 Patents Bookmark and Share Printable Patents List ( PDF PDF file, 225 KB) Over 50 patents have been issued to Nuclear Engineering Division staff members by the US Patent Office from 2000 to present. The table below features a complete list of patents (2000-present) issued

256

Chemical Sciences Division: Research: Programs  

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

Programs Programs The Chemical Sciences Division (CSD) is one of Berkeley Laboratory's basic research divisions. The CSD is composed of individual research groups that conduct research in the areas of chemical physics and the dynamics of chemical reactions, the structure and reactivity of transient species, electron spectroscopy, surface chemistry and catalysis, electrochemistry, chemistry of the actinide elements and their relationship to environmental issues, and atomic physics. The division's 28 principal investigators, many of whom are on the faculty of the University of California at Berkeley, direct the individual research projects and the work of 6 staff scientists, 41 postdoctoral researchers, and 75 graduate students. Our research staff continues to achieve fundamental advances in understanding the structure and reactivity of critical reaction intermediates and transients using both state-of-the-art experimental and theoretical methods. In addition, the division supports a strong effort in heterogeneous and homogeneous catalysis.

257

CIVIC KNOWLEDGE Division of the  

E-Print Network (OSTI)

THE CIVIC KNOWLEDGE PROJECT ___________ ___________ Division of the Humanities University of Chicago CONTACT INFORMATION ___________ CIVIC KNOWLEDGE PROJECT OFFICE Edelstone Rm 133 6030 IDEAS ___________ The aim of the Civic Knowledge Project (CKP) is to develop and strengthen community

He, Chuan

258

DIVISION 16 -ELECTRICAL 16000 GENERAL  

E-Print Network (OSTI)

Electrical Code American National Standards Institute National Electrical Manufacturers Association Institute of Electrical & Electronics Engineers Insulated Cable Engineers Association 3. Three copies of the followingDIVISION 16 - ELECTRICAL _____________________________________________________________ 16000

259

E-Division activities report  

SciTech Connect

E (Experimental Physics) Division carries out basic and applied research in atomic and nuclear physics, in materials science, and in other areas related to the missions of the Laboratory. Some of the activities are cooperative efforts with other divisions of the Laboratory, and, in a few cases, with other laboratories. Many of the experiments are directly applicable to problems in weapons and energy, some have only potential applied uses, and others are in pure physics. This report presents abstracts of papers published by E (Experimental Physics) Division staff members between July 1983 and June 1984. In addition, it lists the members of the scientific staff of the division, including visitors and students, and some of the assignments of staff members on scientific committees. A brief summary of the budget is included.

Barschall, H.H. (comp.)

1984-07-01T23:59:59.000Z

260

Supernova observations for neutrino mixing parameters  

SciTech Connect

The neutrino spectra from a future galactic core collapse supernova could reveal information on the neutrino mixing pattern, especially on {theta}{sub 13} and the mass hierarchy. I briefly outline our current understanding of neutrino flavor conversions inside a supernova, and point out possible signatures of various neutrino mixing scenarios that the neutrino detectors should look for. Supernova neutrinos provide a probe for {theta}{sub 13} and mass hierarchy that is complementary to, and sometimes even better than, the current and proposed terrestrial neutrino oscillation experiments.

Dighe, Amol [Department of Theoretical Physics, Tata Institute of Fundamental Research, 1, Homi Bhabha Road, Colaba, Mumbai 400005 (India)

2011-10-06T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

neutrino_mixing_s805.dvi  

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

NEUTRINO NEUTRINO PHYSICS AS EXPLORED BY FLAVOR CHANGE Written May 2002 by B. Kayser (Fermilab). I. The physics of flavor change: The rather convincing evidence that atmospheric neutrinos change from one flavor to another has now been joined by new, very strong evidence that the solar neutrinos do this as well. Neutrino flavor change implies that neutrinos have nonzero masses. That is, there is a spectrum of three or more neutrino mass eigenstates, ν 1 , ν 2 , ν 3 , . . ., that are the analogues of the charged-lepton mass eigenstates, e, µ, and τ . Neutrino flavor change also implies leptonic mixing. That is, the weak interaction coupling the W boson to a charged lepton and a neutrino can couple any charged-lepton mass eigenstate α to any neutrino mass eigenstate ν i . Here, α = e, µ, or τ , and e is the electron, etc. Leptonic W + decay can yield a particular + α in association with any ν i . The amplitude

262

Energy Dependence of Solar Neutrino Suppression and Bounds on the Neutrino Magnetic Moment  

E-Print Network (OSTI)

An analysis of neutrino electron scattering as applied to the SuperKamiokande solar neutrino experiment with the data from the Homestake experiment leads to an upper bound on the neutrino magnetic moment in the range $\\mu_{\

Joao Pulido; Ana M. Mourao

1998-03-02T23:59:59.000Z

263

Search for muon neutrinos from Gamma-Ray Bursts with the IceCube neutrino telescope  

E-Print Network (OSTI)

of California. Search for muon neutrinos from Gamma-RaySearch for muon neutrinos from Gamma-Ray Bursts with theof searches for high-energy muon neutrinos from 41 gamma-

Abbasi, R.

2010-01-01T23:59:59.000Z

264

Small scales structures and neutrino masses  

E-Print Network (OSTI)

We review the impact of massive neutrinos on cosmological observables at the linear order. By means of N-body simulations we investigate the signatures left by neutrinos on the fully non-linear regime. We present the effects induced by massive neutrinos on the matter power spectrum, the halo mass function and on the halo-matter bias in massive neutrino cosmologies. We also investigate the clustering of cosmic neutrinos within galaxy clusters.

Villaescusa-Navarro, Francisco

2015-01-01T23:59:59.000Z

265

What we can learn from atmospheric neutrinos  

E-Print Network (OSTI)

Physics potential of future measurements of atmospheric neutrinos is explored. Observation of $\\Delta m^2_{21}$ driven sub-dominant effects and $\\theta_{13}$ driven large matter effects in atmospheric neutrinos can be used to study the deviation of $\\theta_{23}$ from maximality and its octant. Neutrino mass hierarchy can be determined extremely well due to the large matter effects. New physics can be constrained both in standard atmospheric neutrino experiments as well as in future neutrino telescopes.

Sandhya Choubey

2006-09-19T23:59:59.000Z

266

Coherence condition for resonant neutrino oscillation  

Science Journals Connector (OSTI)

We study the coherence condition for a neutrino to keep coherence between the effective mass eigenstates in the presence of matter and examine whether or not resonant neutrino oscillation (RNO) happens in the cases of solar and SN 1987A neutrinos. As a result, it becomes evident that RNO is possible in the solar-neutrino case but impossible in the SN 1987A neutrino case.

Hajime Anada and Haruhiko Nishimura

1990-04-15T23:59:59.000Z

267

Conservative Moment Equations for Neutrino Radiation Transport with Limited Relativity  

E-Print Network (OSTI)

We derive conservative, multidimensional, energy-dependent moment equations for neutrino transport in core-collapse supernovae and related astrophysical systems, with particular attention to the consistency of conservative four-momentum and lepton number transport equations. After taking angular moments of conservative formulations of the general relativistic Boltzmann equation, we specialize to a conformally flat spacetime, which also serves as the basis for four further limits. Two of these---the multidimensional special relativistic case, and a conformally flat formulation of the spherically symmetric general relativistic case---are given in appendices for the sake of comparison with extant literature. The third limit is a weak-field, `pseudo-Newtonian' approach \\citep{kim_etal_2009,kim_etal_2012} in which the source of the gravitational potential includes the trace of the stress-energy tensor (rather than just the mass density), and all orders in fluid velocity $v$ are retained. Our primary interest here ...

Endeve, Eirik; Mezzacappa, Anthony

2012-01-01T23:59:59.000Z

268

Nuclear Engineering Division Think, explore, discover, innovate  

E-Print Network (OSTI)

Nuclear Engineering Division Think, explore, discover, innovate Never miss important updates managed by UChicago Argonne, LLC 1 Nuclear Engineering Division: Awards Listing (1980 ­ present) Web: http Division of Educational Programs J.C. Braun L.W. Deitrich #12;Nuclear Engineering Division Think, explore

Kemner, Ken

269

DEPARTMENT OF ASTRONOMY & ASTROPHYSICS Special Astronomy Seminar  

E-Print Network (OSTI)

DEPARTMENT OF ASTRONOMY & ASTROPHYSICS Special Astronomy Seminar October 13, 2011 Speaker : Mayukh) Abstract Black hole X-ray binaries (BHXBs) are widely observed sources in the X-ray and radio astronomy

Udgaonkar, Jayant B.

270

Advances in instrumentation for nuclear astrophysics  

SciTech Connect

The study of the nuclear physics properties which govern energy generation and nucleosynthesis in the astrophysical phenomena we observe in the universe is crucial to understanding how these objects behave and how the chemical history of the universe evolved to its present state. The low cross sections and short nuclear lifetimes involved in many of these reactions make their experimental determination challenging, requiring developments in beams and instrumentation. A selection of developments in nuclear astrophysics instrumentation is discussed, using as examples projects involving the nuclear astrophysics group at Oak Ridge National Laboratory. These developments will be key to the instrumentation necessary to fully exploit nuclear astrophysics opportunities at the Facility for Rare Isotope Beams which is currently under construction.

Pain, S. D. [Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States)] [Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States)

2014-04-15T23:59:59.000Z

271

E-Print Network 3.0 - astrophysical interest extracted Sample...  

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

Technologies and Information Sciences 3 Laboratory Astrophysics and the State of Astronomy and Astrophysics Submitted by the Summary: astrophysics related research in atomic...

272

E-Print Network 3.0 - astrophysical interest molecules Sample...  

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

molecules Page: << < 1 2 3 4 5 > >> 1 Laboratory Astrophysics and the State of Astronomy and Astrophysics Submitted by the Summary: astrophysics related research in atomic...

273

E-Print Network 3.0 - astrophysics Sample Search Results  

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

Collection: Engineering ; Biotechnology 2 Laboratory Astrophysics and the State of Astronomy and Astrophysics Submitted by the Summary: Laboratory Astrophysics and the State of...

274

E-Print Network 3.0 - astrophysical 8lid t7li Sample Search Results  

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

Collection: Engineering ; Biotechnology 2 Laboratory Astrophysics and the State of Astronomy and Astrophysics Submitted by the Summary: Laboratory Astrophysics and the State of...

275

E-Print Network 3.0 - astrophysically important states Sample...  

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

important states Page: << < 1 2 3 4 5 > >> 1 Laboratory Astrophysics and the State of Astronomy and Astrophysics Submitted by the Summary: Laboratory Astrophysics and the State of...

276

E-Print Network 3.0 - astrophysical r-process calculation Sample...  

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Columbia University Collection: Physics 2 Laboratory Astrophysics and the State of Astronomy and Astrophysics Submitted by the Summary: Laboratory astrophysics and complementary...

277

E-Print Network 3.0 - astrophysics international workshop Sample...  

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

Astrophysics and the State of Astronomy and Astrophysics Submitted by the Summary: of NASA-sponsored workshops dedicated to the assessment of the state of laboratory astrophysics...

278

Current Direct Neutrino Mass Experiments  

E-Print Network (OSTI)

In this contribution we review the status and perspectives of direct neutrino mass experiments. These experiments investigate the kinematics of $\\beta$-decays of specific isotopes ($^3$H, $^{187}$Re, $^{163}$Ho) to derive model-independent information on the averaged electron (anti-) neutrino mass, which is formed by the incoherent sum of the neutrino mass eigenstates contributing to the electron neutrino. We first review the kinematics of $\\beta$-decay and the determination of the neutrino mass, before giving a brief overview of past neutrino mass measurements (SN1987a-ToF studies, Mainz and Troitsk experiments for $^3$H, cryo-bolometers for $^{187}$Re). We then describe the Karlsruhe Tritium Neutrino (KATRIN) experiment which is currently under construction at Karlsruhe Institute of Technology. The large-scale setup will use the MAC-E-Filter principle pioneered earlier to push the sensitivity down to a value of 200 meV(90% C.L.). KATRIN faces many technological challenges that have to be resolved with regar...

Drexlin, G; Mertens, S; Weinheimer, C

2013-01-01T23:59:59.000Z

279

Phenomenology Of Sterile Neutrinos At Different Mass Scales: Neutrinoless Double Beta Decay And Neutrino Oscillations.  

E-Print Network (OSTI)

??The existence of neutrino oscillation is the first evidence of physics beyond the Standard Model. It proves that neutrinos are massive and motivates the study (more)

WONG, CHAN,FAI

2012-01-01T23:59:59.000Z

280

Solar monopoles and terrestrial neutrinos  

SciTech Connect

Magnetic monopoles captured in the core of the sun may give rise to a substantial flux of energetic neutrinos by catalyzing the decay of solar hydrogen. We discuss the expected neutrino flux in underground detectors under different assumptions about solar interior conditions. Although a monopole flux as low as F/sub M/ /approximately/ 10/sup /minus/24/ cm/sup /minus/2/ sec/sup /minus/1/ sr/sup /minus/1/ could give rise to a neutrino flux above atmospheric background, due to M/bar M/ annihilation, this does not translate into a reliable monopole flux bound stronger than the Parker limit. 8 refs., 1 fig.

Frieman, J.

1988-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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.


281

Neutrino interactions in neutron matter  

E-Print Network (OSTI)

Neutrino flow is the dominant mechanism of energy transfer in the latest stages of supernovae explosions and in compact stars. The Standard Model of particle physics and accelerator data, provide a satisfactory description of neutrino physics in vacuum up to TeV scale. Nevertheless modeling the dynamics of neutrino interaction in the nuclear environment involves severe difficulties. This thesis in mainly aimed at obtaining the weak response of infinite matter, using both the Correlated Basis Function theory and Landau Theory of Fermi liquid to take into account properly nucleon-nucleon hard core potential and long range correlation (quasi-particle, collective modes, ecc.)

Cipollone, Andrea

2012-01-01T23:59:59.000Z

282

Neutrino interactions in neutron matter  

E-Print Network (OSTI)

Neutrino flow is the dominant mechanism of energy transfer in the latest stages of supernovae explosions and in compact stars. The Standard Model of particle physics and accelerator data, provide a satisfactory description of neutrino physics in vacuum up to TeV scale. Nevertheless modeling the dynamics of neutrino interaction in the nuclear environment involves severe difficulties. This thesis in mainly aimed at obtaining the weak response of infinite matter, using both the Correlated Basis Function theory and Landau Theory of Fermi liquid to take into account properly nucleon-nucleon hard core potential and long range correlation (quasi-particle, collective modes, ecc.)

Andrea Cipollone

2012-12-20T23:59:59.000Z

283

Neutrino masses, leptogenesis, and sterile neutrino dark matter  

E-Print Network (OSTI)

We analyze a scenario in which the lightest heavy neutrino $N_1$ is a dark matter candidate and the second- heaviest neutrino $N_2$ decays producing a lepton number. If $N_1$ were in thermal equilibrium, its energy density today would be much larger than that of the observed dark matter, so we consider energy injection by the decay of $N_2$. In this paper, we show the parameters of this scenario that give the correct abundances of dark matter and baryonic matter and also induce the observed neutrino masses. This model can explain a possible sterile neutrino dark matter signal of $M_1$=7 keV in the x-ray observation of x-ray multi-mirror mission.

Takanao Tsuyuki

2014-07-20T23:59:59.000Z

284

Evidence for neutrino oscillations in the Sudbury Neutrino Observatory  

SciTech Connect

The Sudbury Neutrino Observatory (SNO) is a large-volume heavy water Cerenkov detector designed to resolve the solar neutrino problem. SNO observes charged-current interactions with electron neutrinos, neutral-current interactions with all active neutrinos, and elastic-scattering interactions primarily with electron neutrinos with some sensitivity to other flavors. This dissertation presents an analysis of the solar neutrino flux observed in SNO in the second phase of operation, while {approx}2 tonnes of salt (NaCl) were dissolved in the heavy water. The dataset here represents 391 live days of data. Only the events above a visible energy threshold of 5.5 MeV and inside a fiducial volume within 550 cm of the center of the detector are studied. The neutrino flux observed via the charged-current interaction is [1.71 {+-} 0.065(stat.){+-}{sub 0.068}{sup 0.065}(sys.){+-}0.02(theor.)] x 10{sup 6}cm{sup -2}s{sup -1}, via the elastic-scattering interaction is [2.21{+-}0.22(stat.){+-}{sub 0.12}{sup 0.11}(sys.){+-}0.01(theor.)] x 10{sup 6}cm{sup -2}s{sup -1}, and via the neutral-current interaction is [5.05{+-}0.23(stat.){+-}{sub 0.37}{sup 0.31}(sys.){+-}0.06(theor.)] x 10{sup 6}cm{sup -2}s{sup -1}. The electron-only flux seen via the charged-current interaction is more than 7{sigma} below the total active flux seen via the neutral-current interaction, providing strong evidence that neutrinos are undergoing flavor transformation as they travel from the core of the Sun to the Earth. The most likely origin of the flavor transformation is matter-induced flavor oscillation.

Marino, Alysia Diane

2004-08-10T23:59:59.000Z

285

Diffuse neutrinos from extragalactic supernova remnants: Dominating the 100 TeV IceCube flux  

E-Print Network (OSTI)

IceCube has measured a diffuse astrophysical flux of TeV-PeV neutrinos. The most plausible sources are unique high energy cosmic ray accelerators like hypernova remnants (HNRs) and remnants from gamma ray bursts in star-burst galaxies, which can produce primary cosmic rays with the required energies and abundance. In this case, however, ordinary supernova remnants (SNRs), which are far more abundant than HNRs, produce a comparable or larger neutrino flux in the ranges up to 100-150 TeV energies, implying a spectral break in the IceCube signal around these energies. The SNRs contribution in the diffuse flux up to these hundred TeV energies provides a natural baseline and then constrains the expected PeV flux.

Chakraborty, Sovan

2015-01-01T23:59:59.000Z

286

Neutrino oscillation studies and the neutrino cross section  

E-Print Network (OSTI)

The present uncertainties in the knowledge of the neutrino cross sections for E_nu \\sim 1 GeV, that is in the energy range most important for atmospheric and long baseline accelerator neutrinos, are large. These uncertainties do not play a significant role in the interpretation of existing data, however they could become a limiting factor in future studies that aim at a complete and accurate determination of the neutrino oscillation parameters. New data and theoretical understanding on nuclear effects and on the electromagnetic structure functions at low Q^2 and in the resonance production region are available, and can be valuable in reducing the present systematic uncertainties. The collaboration of physicists working in different subfields will be important to obtain the most from this available information. It is now also possible, with the facilities developed for long baseline beams, to produce high intensity and well controlled neutrino beams to measure the neutrino interaction properties with much better precision that what was done in the past. Several projects and ideas to fully exploit these possibilities are under active investigation. These topics have been the object of the first neutrino interaction (NUINT01) workshop.

Paolo Lipari

2002-07-14T23:59:59.000Z

287

The Long-Baseline Neutrino Experiment: Exploring Fundamental Symmetries of the Universe  

E-Print Network (OSTI)

The preponderance of matter over antimatter in the early Universe, the dynamics of the supernova bursts that produced the heavy elements necessary for life and whether protons eventually decay --- these mysteries at the forefront of particle physics and astrophysics are key to understanding the early evolution of our Universe, its current state and its eventual fate. The Long-Baseline Neutrino Experiment (LBNE) represents an extensively developed plan for a world-class experiment dedicated to addressing these questions. LBNE is conceived around three central components: (1) a new, high-intensity neutrino source generated from a megawatt-class proton accelerator at Fermi National Accelerator Laboratory, (2) a near neutrino detector just downstream of the source, and (3) a massive liquid argon time-projection chamber deployed as a far detector deep underground at the Sanford Underground Research Facility. This facility, located at the site of the former Homestake Mine in Lead, South Dakota, is approximately 1,300 km from the neutrino source at Fermilab -- a distance (baseline) that delivers optimal sensitivity to neutrino charge-parity symmetry violation and mass ordering effects. This ambitious yet cost-effective design incorporates scalability and flexibility and can accommodate a variety of upgrades and contributions. With its exceptional combination of experimental configuration, technical capabilities, and potential for transformative discoveries, LBNE promises to be a vital facility for the field of particle physics worldwide, providing physicists from around the globe with opportunities to collaborate in a twenty to thirty year program of exciting science. In this document we provide a comprehensive overview of LBNE's scientific objectives, its place in the landscape of neutrino physics worldwide, the technologies it will incorporate and the capabilities it will possess.

LBNE Collaboration; Corey Adams; David Adams; Tarek Akiri; Tyler Alion; Kris Anderson; Costas Andreopoulos; Mike Andrews; Ioana Anghel; Joo Carlos Costa dos Anjos; Maddalena Antonello; Enrique Arrieta-Diaz; Marina Artuso; Jonathan Asaadi; Xinhua Bai; Bagdat Baibussinov; Michael Baird; Baha Balantekin; Bruce Baller; Brian Baptista; D'Ann Barker; Gary Barker; William A. Barletta; Giles Barr; Larry Bartoszek; Amit Bashyal; Matt Bass; Vincenzo Bellini; Pietro Angelo Benetti; Bruce E. Berger; Marc Bergevin; Eileen Berman; Hans-Gerd Berns; Adam Bernstein; Robert Bernstein; Babu Bhandari; Vipin Bhatnagar; Bipul Bhuyan; Jianming Bian; Mary Bishai; Andrew Blake; Flor Blaszczyk; Erik Blaufuss; Bruce Bleakley; Edward Blucher; Steve Blusk; Virgil Bocean; F. Boffelli; Jan Boissevain; Timothy Bolton; Maurizio Bonesini; Steve Boyd; Andrew Brandt; Richard Breedon; Carl Bromberg; Ralph Brown; Giullia Brunetti; Norman Buchanan; Bill Bugg; Jerome Busenitz; E. Calligarich; Leslie Camilleri; Giada Carminati; Rachel Carr; Cesar Castromonte; Flavio Cavanna; Sandro Centro; Alex Chen; Hucheng Chen; Kai Chen; Daniel Cherdack; Cheng-Yi Chi; Sam Childress; Brajesh Chandra Choudhary; Georgios Christodoulou; Cabot-Ann Christofferson; Eric Church; David Cline; Thomas Coan; Alfredo Cocco; Joao Coelho; Stephen Coleman; Janet M. Conrad; Mark Convery; Robert Corey; Luke Corwin; Jack Cranshaw; Daniel Cronin-Hennessy; A. Curioni; Helio da Motta; Tristan Davenne; Gavin S. Davies; Steven Dazeley; Kaushik De; Andre de Gouvea; Jeffrey K. de Jong; David Demuth; Chris Densham; Milind Diwan; Zelimir Djurcic; R. Dolfini; Jeffrey Dolph; Gary Drake; Stephen Dye; Hongue Dyuang; Daniel Edmunds; Steven Elliott; Muhammad Elnimr; Sarah Eno; Sanshiro Enomoto; Carlos O. Escobar; Justin Evans; A. Falcone; Lisa Falk; Amir Farbin; Christian Farnese; Angela Fava; John Felde; S. Fernandes; Fernando Ferroni; Farshid Feyzi; Laura Fields; Alex Finch; Mike Fitton; Bonnie Fleming; Jack Fowler; Walt Fox; Alex Friedland; Stu Fuess; Brian Fujikawa; Hugh Gallagher; Raj Gandhi; Gerald Garvey; Victor M. Gehman; Gianluigi de Geronimo; Daniele Gibin; Ronald Gill; Ricardo A. Gomes; Maury C. Goodman; Jason Goon; Nicholas Graf; Mathew Graham; Rik Gran; Christopher Grant; Nick Grant; Herbert Greenlee; Leland Greenler; Sean Grullon; Elena Guardincerri; Victor Guarino; Evan Guarnaccia; Germano Guedes; Roxanne Guenette; Alberto Guglielmi; Marcelo M. Guzzo; Alec T. Habig; Robert W. Hackenburg; Haleh Hadavand; Alan Hahn; Martin Haigh; Todd Haines; Thomas Handler; Sunej Hans; Jeff Hartnell; John Harton; Robert Hatcher; Athans Hatzikoutelis; Steven Hays; Eric Hazen; Mike Headley; Anne Heavey; Karsten Heeger; Jaret Heise; Robert Hellauer; Jeremy Hewes; Alexander Himmel; Matthew Hogan; Pedro Holanda; Anna Holin; Glenn Horton-Smith; Joe Howell; Patrick Hurh; Joey Huston; James Hylen; Richard Imlay; Jonathan Insler; G. Introzzi; Zeynep Isvan; Chris Jackson; John Jacobsen; David E. Jaffe; Cat James; Chun-Min Jen; Marvin Johnson; Randy Johnson; Robert Johnson; Scott Johnson; William Johnston; John Johnstone; Ben J. P. Jones; H. Jostlein; Thomas Junk; Richard Kadel; Karl Kaess; Georgia Karagiorgi; Jarek Kaspar; Teppei Katori; Boris Kayser; Edward Kearns; Paul Keener; Ernesto Kemp; Steve H. Kettell; Mike Kirby; Joshua Klein; Gordon Koizumi; Sacha Kopp; Laura Kormos; William Kropp; Vitaly A. Kudryavtsev; Ashok Kumar; Jason Kumar; Thomas Kutter; Franco La Zia; Kenneth Lande; Charles Lane; Karol Lang; Francesco Lanni; Richard Lanza; Tony Latorre; John Learned; David Lee; Kevin Lee; Qizhong Li; Shaorui Li; Yichen Li; Zepeng Li; Jiang Libo; Steve Linden; Jiajie Ling; Jonathan Link; Laurence Littenberg; Hu Liu; Qiuguang Liu; Tiankuan Liu; John Losecco; William Louis; Byron Lundberg; Tracy Lundin; Jay Lundy; Ana Amelia Machado; Cara Maesano; Steve Magill; George Mahler; David Malon; Stephen Malys; Francesco Mammoliti; Samit Kumar Mandal; Anthony Mann; Paul Mantsch; Alberto Marchionni; William Marciano; Camillo Mariani; Jelena Maricic; Alysia Marino; Marvin Marshak; John Marshall; Shiegenobu Matsuno; Christopher Mauger; Konstantinos Mavrokoridis; Nate Mayer; Neil McCauley; Elaine McCluskey; Kirk McDonald; Kevin McFarland; David McKee; Robert McKeown; Robert McTaggart; Rashid Mehdiyev; Dongming Mei; A. Menegolli; Guang Meng; Yixiong Meng; David Mertins; Mark Messier; William Metcalf; Radovan Milincic; William Miller; Geoff Mills; Sanjib R. Mishra; Nikolai Mokhov; Claudio Montanari; David Montanari; Craig Moore; Jorge Morfin; Ben Morgan; William Morse; Zander Moss; Clio A. Moura; Stuart Mufson; David Muller; Jim Musser; Donna Naples; Jim Napolitano; Mitch Newcomer; Ryan Nichol; Tim Nicholls; Evan Niner; Barry Norris

2013-07-28T23:59:59.000Z

288

Environmental Energy Technologies Division News  

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

2: Vol. 10, No. 3 [http://eetd.lbl.gov/newsletter/nl38/] 2: Vol. 10, No. 3 [http://eetd.lbl.gov/newsletter/nl38/] Environmental Energy Technologies Division News [http://eetd.lbl.gov/newsletter/] © 2012 Environmental Energy Technologies Division [http://eetd.lbl.gov/] E.O. Lawrence Berkeley National Laboratory [http://www.lbl.gov/] Disclaimer [http://www.lbl.gov/Disclaimers.html] WINTER 2012: VOL. 10, NO. 3 Middle-Income Energy Savings LIGTT Greenhouse Gas Standards Port of Oakland Study Ashok Gadgil Wins Zayed Award Max Tech Research Highlights Sources and Credits Congratulations to EETD Division Director Ashok Gadgil, winner of the Zayed Future Energy Prize lifetime achievement award, about which you can read in this issue. We also present research on how energy efficiency program managers can better reach middle-income families, and perhaps

289

Environmental Energy Technologies Division News  

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

0: 0: Vol. 9, No. 1 Ashok Gadgil Named Director of Environmental Energy Technologies Division Arsenic Removal Technologies ARPA-E Funding Low-Energy Buildings User Facility ECMA International Standard U.S. Wind Power Market Clean Energy Ministerial Research Highlights Sources and Credits PDF of EETD News Ashok Gadgil Named New EETD Director Ashok Gadgil Ashok Gadgil has been named Director of Lawrence Berkeley National Laboratory's (Berkeley Lab's) Environmental Energy Technologies Division (EETD). Serving as the Acting Division Director since October, he replaces Arun Majumdar who is now Director of the DOE's Advanced Research Projects Agency-Energy (ARPA-E). Gadgil is a Professor in Civil and Environmental Engineering at UC Berkeley and joined EETD in 1988. He is recognized for

290

Fermilab's Accelerator and Research Divisions  

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

July 19, 1996 July 19, 1996 Number 14 Fixed-target experimenters not only expect Fermilab's Accelerator and Research Divisions to turn water into wine-they need 10 different vintages. Providing beam to fixed-target experiments presents the challenge of converting high-inten- sity protons into 10 separate beams of varying intensities and particles, from kaons to neu- trinos. The Accelerator Division generates and splits the beam, and then hands the protons off to the Research Division, which converts them into beams of different particles. The process begins with a breath of hydrogen gas. Eventually the hydrogen atoms lose their outer electrons and become a stream of protons-the formation of the beam. Physicists measure two characteristics of the beam: its energy (eV) and its intensity. Intensity

291

Highlights: Nuclear Engineering Division (Argonne)  

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

About the Division > Highlights About the Division > Highlights Director's Welcome Organization Achievements Awards Patents Professional Societies Highlights Fact Sheets, Brochures & Other Documents Multimedia Library About Nuclear Energy Nuclear Reactors Designed by Argonne Argonne's Nuclear Science and Technology Legacy Opportunities within NE Division Visit Argonne Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Celebrating the 70th Anniversary of Chicago Pile 1 (CP-1) Argonne OutLoud on Nuclear Energy Argonne Energy Showcase 2012 Highlights Bookmark and Share Click on the "Date" header to sort the NE highlights in chronological order (ascending or descending). You may also search through the NE highlights for a specific keyword/year;

292

Environmental Energy Technologies Division News  

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

8, No. 4 [http://eetd.lbl.gov/newsletter/nl31/] 8, No. 4 [http://eetd.lbl.gov/newsletter/nl31/] Environmental Energy Technologies Division News [http://eetd.lbl.gov/newsletter/] © 2010 Environmental Energy Technologies Division [http://eetd.lbl.gov/] E.O. Lawrence Berkeley National Laboratory [http://www.lbl.gov/] Disclaimer [http://www.lbl.gov/Disclaimers.html] SPRING NEWSLETTER: VOL. 8, NO. 4 OpenADR's Steps Toward a National Smart Grid Standard Dangers of Third-Hand Smoke Energy Efficiency Workforce Training John Newman Wins the Acheson Award Net Metered PV Systems Recovery Act Grant Program Evaluation Sources and Credits As the nation continues moving toward a more energy-efficient economy, research at the Environmental Energy Technologies Division plays its part in developing the technologies it needs for the Smart Grid, and in evaluating policies aimed at increasing energy efficiency

293

Environmental Energy Technologies Division News  

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

9, No. 2 [http://eetd.lbl.gov/newsletter/nl33/] 9, No. 2 [http://eetd.lbl.gov/newsletter/nl33/] Environmental Energy Technologies Division News [http://eetd.lbl.gov/newsletter/] © 2010 Environmental Energy Technologies Division [http://eetd.lbl.gov/] E.O. Lawrence Berkeley National Laboratory [http://www.lbl.gov/] Disclaimer [http://www.lbl.gov/Disclaimers.html] FALL NEWSLETTER: VOL. 9, NO. 2 Driving Demand Bennett-Nordman IEEE Standard Nicotine and Ozone SVOW Renewables Portfolio Standard Report Kerosene Lamp Particulate Study Research Highlights Sources and Credits New ways of convincing homeowners of the benefits of energy efficiency improvements to their homes-and new language to use in discussing these benefits-is discussed in a report titled "Driving Demand" from Environmental Energy Technologies Division researchers. This issue also

294

neutrino-properties-web.dvi  

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

THE THE NEUTRINO PROPERTIES LISTINGS Revised August 2013 by P. Vogel (Caltech) and A. Piepke (University of Alabama). The following Listings concern measurements of various properties of neutrinos. Nearly all of the measurements, all of which so far are limits, actually concern superpositions of the mass eigenstates ν i , which are in turn related to the weak eigenstates ν ℓ , via the neutrino mixing matrix |ν ℓ = i U ℓi |ν i . In the analogous case of quark mixing via the CKM matrix, the smallness of the off-diagonal terms (small mixing angles) permits a "dominant eigenstate" approximation. However, the results of neutrino oscillation searches show that the mixing matrix contains two large mixing angles and a third angle that is not exceedingly small. We cannot, therefore, associate any particular state |ν i with any particular lepton label e, µ or τ . Nevertheless,

295

High-Energy Neutrino Astronomy  

E-Print Network (OSTI)

Kilometer-scale neutrino detectors such as IceCube are discovery instruments covering nuclear and particle physics, cosmology and astronomy. Examples of their multidisciplinary missions include the search for the particle nature of dark matter and for additional small dimensions of space. In the end, their conceptual design is very much anchored to the observational fact that Nature accelerates protons and photons to energies in excess of 10^{20} and 10^{13} eV, respectively. The cosmic ray connection sets the scale of cosmic neutrino fluxes. In this context, we discuss the first results of the completed AMANDA detector and the reach of its extension, IceCube. Similar experiments are under construction in the Mediterranean. Neutrino astronomy is also expanding in new directions with efforts to detect air showers, acoustic and radio signals initiated by neutrinos with energies similar to those of the highest energy cosmic rays.

F. Halzen

2005-01-26T23:59:59.000Z

296

On the muon neutrino mass  

E-Print Network (OSTI)

During the runs of the PS 179 experiment at LEAR of CERN, we photographed an event of antiproton-Ne absorption, with a complete pi+ -> mu+ ->e+ chain. From the vertex of the reaction a very slow energy pi+ was emitted. The pi+ decays into a mu+ and subsequently the mu+ decays into a positron. At the first decay vertex a muon neutrino was emitted and at the second decay vertex an electron neutrino and a muon antineutrino. Measuring the pion and muon tracks and applying the momentum and energy conservation and using a classical statistical interval estimator, we obtained an experimental upper limit for the muon neutrino mass: m_nu < 2.2 MeV at a 90% confidence level. A statistical analysis has been performed of the factors contributing to the square value of the neutrino mass limit.

N. Angelov; F. Balestra; Yu. Batusov; A. Bianconi; M. P. Bussa; L. Busso; L. Ferrero; R. Garfagnini; I. Gnesi; E. Lodi Rizzini; A. Maggiora; D. Panzieri; G. Piragino; G. Pontecorvo; F. Tosello; L. Venturelli

2006-05-03T23:59:59.000Z

297

zeller-neutrino08.ppt  

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

K2K MiniBooNE,SciBooNE MINERvA Sam Zeller, Neutrino 08 6 New Measurements * near future: - MINERA (2009) * present: - K2K (1999 - 2004) - MiniBooNE (2002 - present) -...

298

Neutrino Cross-Section Experiments  

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

N u F a c t 0 9 11th International Workshop on Neutrino Factories, Superbeams and Beta Beams July 20-25, 2009 - Illinois Institute of Technology - Chicago David Schmitz, Fermilab...

299

Neutrino Factories and Beta Beams  

E-Print Network (OSTI)

a Neutrino Factory Based on Muon Beams, Proc. 2001 ParticleMD. [19] C. Rubbia et al. , Beam Cooling with Ionisationthe required unstable ion beams has recently been suggested

Zisman, Michael S.

2006-01-01T23:59:59.000Z

300

Production ratio of meta-stable isomer in {sup 180}Ta by neutrino-induced reactions  

SciTech Connect

The nucleosynthesis of {sup 180}Ta has remained an unsolved problem and as its origin many nucleosynthesis mechanisms have been proposed. This isotope has the unique feature that the naturally occurring abundance of {sup 180}Ta is actually a meta-stable isomer (half-life of >=10{sup 15} yr), while the ground state is a 1{sup +} unstable state which beta-decays with a half-life of only 8.15 hr. We have made a new time-dependent calculation of {sup 180}Ta meta-stable isomer residual ratio after supernova neutrino-induced reactions. This isomer residual ratio is crucial for understanding the production and survival of this naturally occurring rare isotope. We have constructed a new model under temperature evolution after type II supernova explosion. We include the explicit linking between the isomer and all known excited states and found that the residual ratio is insensitive to astrophysical parameters such as neutrino energy spectrum, explosion energy, decay time constant. We find that the explicit time evolution of the synthesis of {sup 180}Ta avoids the overproduction relative to {sup 138}La for a neutrino process neutrino temperature of 4 MeV.

Hayakawa, Takehito [Japan Atomic Energy Agency, Kizugawa, Kyoto 619-0215 (Japan); Kajino, Toshitaka [National Astronomical Observatory, Osawa, Mitaka, Tokyo 181-8588 (Japan); Chiba, Satoshi [Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-11 (Japan); Mathews, Grant [Astrophysics, Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States)

2010-05-12T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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.


301

The Role and Detectability of the Charm Contribution to Ultra High Energy Neutrino Fluxes  

E-Print Network (OSTI)

It is widely believed that charm meson production and decay may play an important role in high energy astrophysical sources of neutrinos, especially those that are baryon-rich, providing an environment conducive to pp interactions. Using slow-jet supernovae (SJS) as an example of such a source, we study the detectability of high-energy neutrinos, paying particular attention to those produced from charmed-mesons. We highlight important distinguishing features in the ultra-high energy neutrino flux which would act as markers for the role of charm in the source. In particular, charm leads to significant event rates at higher energies, after the conventional (pi, K) neutrino fluxes fall off. We calculate event rates both for a nearby single source and for diffuse SJS fluxes for an IceCube-like detector. By comparing muon event rates for the conventional and prompt fluxes in different energy bins, we demonstrate the striking energy dependence in the rates induced by the presence of charm. We also show that it lead...

Gandhi, Raj; Watanabe, Atsushi

2009-01-01T23:59:59.000Z

302

Pinpointing extragalactic neutrino sources in light of recent IceCube observations  

Science Journals Connector (OSTI)

The IceCube Collaboration has recently reported the observation of a flux of high-energy astrophysical neutrinos. The angular distribution of events is consistent with an isotropic arrival direction of neutrinos which is expected for an extragalactic origin. We estimate the prospects of detecting individual neutrino sources from a quasidiffuse superposition of many extragalactic sources at the level of the IceCube observation. Unlike previous analyses, we take into account ensemble variations of the source distribution as well as the event statistics of individual sources. We show that IceCube in its present configuration is sensitive to rare ?10?8??Mpc?3?yr?1 transient source classes within five years of operation via the observation of event clusters. Identification of time-independent sources is more challenging due to larger backgrounds. We estimate that during the same period IceCube is sensitive to sparse sources with densities of ?10?6??Mpc?3 via association of events with the closest 100 sources of an ensemble. We show that a next-generation neutrino observatory with 5 times the effective area of IceCube and otherwise similar detector performance would increase the sensitivity to source densities and rates by about 2 orders of magnitude.

Markus Ahlers and Francis Halzen

2014-08-11T23:59:59.000Z

303

Flavor Composition of the High-Energy Neutrino Events in IceCube  

Science Journals Connector (OSTI)

The IceCube experiment has recently reported the observation of 28 high-energy (>30??TeV) neutrino events, separated into 21 showers and 7 muon tracks, consistent with an extraterrestrial origin. In this Letter, we compute the compatibility of such an observation with possible combinations of neutrino flavors with relative proportion (?e??????)?. Although the 7?21 track-to-shower ratio is naively favored for the canonical (1?1?1)? at Earth, this is not true once the atmospheric muon and neutrino backgrounds are properly accounted for. We find that, for an astrophysical neutrino E?2 energy spectrum, (1?1?1)? at Earth is disfavored at 81%C.L. If this proportion does not change, 6 more years of data would be needed to exclude (1?1?1)? at Earth at 3? C.L. Indeed, with the recently released 3-yr data, that flavor composition is excluded at 92%C.L. The best fit is obtained for (1?0?0)? at Earth, which cannot be achieved from any flavor ratio at sources with averaged oscillations during propagation. If confirmed, this result would suggest either a misunderstanding of the expected background events or a misidentification of tracks as showers, or even more compellingly, some exotic physics which deviates from the standard scenario.

Olga Mena; Sergio Palomares-Ruiz; Aaron C. Vincent

2014-08-28T23:59:59.000Z

304

First Observation of PeV-Energy Neutrinos with IceCube  

Science Journals Connector (OSTI)

We report on the observation of two neutrino-induced events which have an estimated deposited energy in the IceCube detector of 1.040.16 and 1.140.17??PeV, respectively, the highest neutrino energies observed so far. These events are consistent with fully contained particle showers induced by neutral-current ?e,?,? (?e,?,?) or charged-current ?e (?e) interactions within the IceCube detector. The events were discovered in a search for ultrahigh energy neutrinos using data corresponding to 615.9 days effective live time. The expected number of atmospheric background is 0.0820.004(stat)-0.057+0.041(syst). The probability of observing two or more candidate events under the atmospheric background-only hypothesis is 2.910-3 (2.8?) taking into account the uncertainty on the expected number of background events. These two events could be a first indication of an astrophysical neutrino flux; the moderate significance, however, does not permit a definitive conclusion at this time.

M. G. Aartsen et al. (IceCube Collaboration)

2013-07-08T23:59:59.000Z

305

Photohadronic origin of the TeV-PeV neutrinos observed in IceCube  

Science Journals Connector (OSTI)

We perform an unbiased search of the origin of the recently observed 28 events above ?30??TeV in the IceCube neutrino observatory, assuming that these are (apart from the atmospheric background) of astrophysical origin produced by photohadronic interactions. Instead of relying on the normalization of the neutrino flux, we demonstrate that spectral shape and flavor composition can be used to constrain or identify the source class. In order to quantify our observations, we use a model where the target photons are produced by the synchrotron emission of coaccelerated electrons, and we include magnetic field effects on the secondary muons, pions, and kaons. We find that the lack of observed events with energies much larger than PeV points towards sources with strong magnetic fields, which do not exhibit a direct correlation between highest cosmic ray and neutrino energies. While the simplest active galactic nuclei models with efficient proton acceleration plausibly describe the current data at about the 3? confidence level, we show that IceCube can rule out that the observed neutrinos stem from the sources of the ultrahigh-energy cosmic rays with a factor of 10 increased statistics at more than 5? if the current observations are confirmed. A possible caveat are sources with strong magnetic fields and high Lorentz factors, such as magnetic energy dominated gamma-ray bursts.

Walter Winter

2013-10-15T23:59:59.000Z

306

Standard and non-standard primordial neutrinos  

E-Print Network (OSTI)

The standard cosmological model predicts the existence of a cosmic neutrino background with a present density of about 110 cm^{-3} per flavour, which affects big-bang nucleosynthesis, cosmic microwave background anisotropies, and the evolution of large scale structures. We report on a precision calculation of the cosmic neutrino background properties including the modification introduced by neutrino oscillations. The role of a possible neutrino-antineutrino asymmetry and the impact of non-standard neutrino-electron interactions on the relic neutrinos are also briefly discussed.

P. D. Serpico

2006-08-14T23:59:59.000Z

307

Coherence effects in neutrino oscillations  

Science Journals Connector (OSTI)

We study the effect of coherent and incoherent broadening on neutrino oscillations both in vacuum and in the presence of matter (the MSW effect). We show under very general assumptions that it is not possible to distinguish experimentally neutrinos produced in some region of space as wave packets from those produced in the same region of space as plane waves with the same energy distribution. 1995 The American Physical Society.

Ken Kiers; Shmuel Nussinov; Nathan Weiss

1996-01-01T23:59:59.000Z

308

E-Print Network 3.0 - antares neutrino telescope Sample Search...  

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

oscillation parameters. Keywords: neutrino oscillations, ANTARES, neutrino telescope 1 Introduction It is now... energy neutrino telescopes, whose energy threshold is...

309

Publishing Division The Edinburgh Building  

E-Print Network (OSTI)

Publishing Division The Edinburgh Building Shaftesbury Road Cambridge CB2 2RU, UK TELEPHONE 01223 The Pitt Building, Trumpington Street, Cambridge, United Kingdom CAMBRIDGE UNIVERSITY PRESS The Edinburgh Building, Cambridge CB2 2RU, UK 40 West 20th Street, New York NY 10011-4211, USA 477 Williamstown Road

Rosenberger, Alfred H.

310

Environmental Transport Division: 1979 report  

SciTech Connect

During 1979, the Environmental Transport Division (ETD) of the Savannah River Laboratory conducted atmospheric, terrestrial, aquatic, and marine studies, which are described in a series of articles. Separate abstracts were prepared for each. Publications written about the 1979 research are listed at the end of the report.

Murphy, C.E. Jr.; Schubert, J.F.; Bowman, W.W.; Adams, S.E.

1980-03-01T23:59:59.000Z

311

PUBLIC HEALTH DIVISION Coronavirus infections  

E-Print Network (OSTI)

PUBLIC HEALTH DIVISION Coronavirus infections MERS-CoV (Middle Eastern respiratory syndrome people who cared for those who were sick with MERS also became ill. MERS might come from other sources with diabetes, lung disease or other serious health problems appear to be at higher risk for severe illness

Khan, Javed I.

312

Oregon Land Management Division - Easements | Open Energy Information  

Open Energy Info (EERE)

Division - Easements Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Oregon Land Management Division - Easements Author Oregon Land Management Division...

313

Environmental Assessment for Conducting Astrophysics and Other Basic Science Experiments - Chapter 2 Proposed Action and Alternatives  

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

2-1 2-1 CHAPTER 2 PROPOSED ACTION AND ALTERNATIVES Some types of experiments are best (or only) performed deep underground. For this reason, scientists have considered WIPP as a potential site for these types of experiments and have sought permission from DOE to conduct several types of experiments there. As an example, astrophysicists are searching for very small particles with no charge called neutrinos. These particles are so small that they typically pass through the Earth. The only way to detect them is to look for them using facilities as far underground as possible so that the Earth's surface layers filter out other cosmic particles and radiation. The first basic astrophysics-like experiments were begun at WIPP in 1993 by LANL scientists who used

314

Los Alamos Science, Number 25 -- 1997: Celebrating the Neutrino  

DOE R&D Accomplishments (OSTI)

This issue is devoted to the neutrino and its remaining mysteries. It is divided into the following areas: (1) The Reines-Cowan experiment -- detecting the poltergeist; (2) The oscillating neutrino -- an introduction to neutrino masses and mixing; (3) A brief history of neutrino experiments at LAMPF; (4) A thousand eyes -- the story of LSND (Los Alamos neutrino oscillation experiment); (5) The evidence for oscillations; (6) The nature of neutrinos in muon decay and physics beyond the Standard Model; (7) Exorcising ghosts -- in pursuit of the missing solar neutrinos; (8) MSW -- a possible solution to the solar neutrino problem; (8) Neutrinos and supernovae; and (9) Dark matter and massive neutrinos.

Cooper, N. G. [ed.

1997-00-00T23:59:59.000Z

315

Review Paper. Neutrino masses, mixing and oscillations  

Science Journals Connector (OSTI)

...experiments and experiments on the search for neutrinoless double beta-decay are briefly discussed. Neutrino Masses|Neutrino Oscillations|Neutrinoless Double beta-Decay| 10.1098/rspa.2003.1263 REVIEW PAPER...

2004-01-01T23:59:59.000Z

316

Annual modulation of cosmic relic neutrinos  

E-Print Network (OSTI)

The cosmic neutrino background (C?B), produced about one second after the big bang, permeates the Universe today. New technological advancements make neutrino capture on beta-decaying nuclei (NCB) a clear path forward ...

Safdi, Benjamin R.

317

Neutrino mixing, flavor states and dark energy  

E-Print Network (OSTI)

We shortly summarize the quantum field theory formalism for the neutrino mixing and report on recent results showing that the vacuum condensate induced by neutrino mixing can be interpreted as a dark energy component of the Universe.

M. Blasone; A. Capolupo; S. Capozziello; G. Vitiello

2007-11-06T23:59:59.000Z

318

Princeton Plasma Physics Lab - Plasma astrophysics  

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

astrophysics A field of physics astrophysics A field of physics that is growing in interest worldwide that tackles such astrophysical phenomena as the source of violent space weather and the formation of stars. en COLLOQUIUM: On Tracing the Origins of the Solar Wind http://www.pppl.gov/events/colloquium-tracing-origins-solar-wind

The Sun emits a constant flow of particles from its surface. Mainly composed of Protons and electrons, and dragging with it magnetic fields, this Solar Wind expands outwards from the sun, interacting with planets and spacecraft alike. Since the 1960s, in situ observations have

319

22nd Texas Symposium on Relativistic Astrophysics  

SciTech Connect

The XXII Texas Symposium on Relativistic Astrophysics, jointly organized by the Kavli Institute for Particle Astrophysics and Cosmology (KIPAC), the Stanford Linear Accelerator Center, and the Physics Department of Stanford University, was held on December 13-17, 2004. Following the tradition of past Texas Symposia the presentations emphasized recent developments in Cosmology, High Energy Astrophysics and the frontiers between these and Gravitation and Particle Physics. This Symposium was attended by more than 500 colleagues from a spectrum of disciplines mentioned above. There were 9 Plenary Sessions, 3 Parallel Sessions and 2 Poster Sessions held during the five-day program, with 76 oral and 240 poster presentations. These are now documented on CD and in the eConf proceedings archive. Funding of $15,000 received from the DOE under award DE-FG02-05ER41362 was used for expenses related to facility, local transportation and administrative expenses.

Elliott Bloom

2005-04-01T23:59:59.000Z

320

The Cosmic Battery in Astrophysical Accretion Disks  

E-Print Network (OSTI)

The aberrated radiation pressure at the inner edge of the accretion disk around an astrophysical black hole imparts a relative azimuthal velocity on the electrons with respect to the ions which gives rise to a ring electric current that generates large scale poloidal magnetic field loops. This is the Cosmic Battery established by Contopoulos and Kazanas in 1998. In the present work we perform realistic numerical simulations of this important astrophysical mechanism in advection-dominated accretion flows-ADAF. We confirm the original prediction that the inner parts of the loops are continuously advected toward the central black hole and contribute to the growth of the large scale magnetic field, whereas the outer parts of the loops are continuously diffusing outward through the turbulent accretion flow. This process of inward advection of the axial field and outward diffusion of the return field proceeds all the way to equipartition, thus generating astrophysically significant magnetic fields on astrophysicall...

Contopoulos, Ioannis; Katsanikas, Matthaios

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

Distributed Space Segment for High Energy Astrophysics: Similarities And specificites  

Science Journals Connector (OSTI)

This paper analyses two height energy astrophysics missions, MAX and SIMBOL-X, which have been studied in CNES...

Emmanuel Hinglais

2005-12-01T23:59:59.000Z

322

SECTION I: NUCLEAR STRUCTURE, FUNDAMENTAL INTERACTIONS AND ASTROPHYSIC...  

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

I: NUCLEAR STRUCTURE, FUNDAMENTAL INTERACTIONS AND ASTROPHYSICS Double Folding Analysis of 6Li Elastic and Inelastic Scattering on 116Sn ......

323

Earth Matter Effect on Democratic Neutrinos  

E-Print Network (OSTI)

The neutrino propagation through the Earth is investigated in the framework of the democratic neutrino theory. In this theory the neutrino mixing angle theta-1-3 is approximately determined, which allows one to make a well defined neutrino oscillogram driven by the 1-3 mixing in the matter of the Earth. Significant differences in this oscillogram from the case of models with relatively small theta-1-3 are discussed.

Dmitry Zhuridov

2014-08-30T23:59:59.000Z

324

From Neutrino Factory to Muon Collider  

SciTech Connect

Both Muon Colliders and Neutrino Factories require a muon source capable of producing and capturing {Omicron}(10{sup 21}) muons/year. This paper reviews the similarities and differences between Neutrino Factory and Muon Collider accelerator complexes, the ongoing R&D needed for a Muon Collider that goes beyond Neutrino Factory R&D, and some thoughts about how a Neutrino Factory on the CERN site might eventually be upgraded to a Muon Collider.

Geer, S.; /Fermilab

2010-01-01T23:59:59.000Z

325

Neutrino magnetic moment in a magnetized plasma  

E-Print Network (OSTI)

The contribution of a magnetized plasma to the neutrino magnetic moment is calculated. It is shown that only part of the additional neutrino energy in magnetized plasma connecting with its spin and magnetic field strength defines the neutrino magnetic moment. It is found that the presence of magnetized plasma does not lead to the considerable increase of the neutrino magnetic moment in contrast to the results presented in literature previously.

N. V. Mikheev; E. N. Narynskaya

2010-11-08T23:59:59.000Z

326

Dark energy induced by neutrino mixing  

E-Print Network (OSTI)

The energy content of the vacuum condensate induced by the neutrino mixing is interpreted as dynamically evolving dark energy.

Antonio Capolupo; Salvatore Capozziello; Giuseppe Vitiello

2006-12-05T23:59:59.000Z

327

Procurement Division | Princeton Plasma Physics Lab  

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

Procurement Division Introduction Technology Transfer Furth Plasma Physics Library Contact Us Lab Leadership Directory Careers Human Resources Environment, Safety & Health...

328

Computing and Computational Sciences Directorate - Divisions  

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

CCSD Divisions Computational Sciences and Engineering Computer Sciences and Mathematics Information Technolgoy Services Joint Institute for Computational Sciences National Center...

329

Models of Neutrino Masses and Mixing  

E-Print Network (OSTI)

Neutrino physics has entered an era of precision measurements. With these precise measurements, we may be able to distinguish different models that have been constructed to explain the small neutrino masses and the large mixing among them. In this talk, I review some of the existing theoretical models and their predictions for neutrino oscillations.

Mu-Chun Chen

2007-06-14T23:59:59.000Z

330

EARTH SCIENCES Lower-Division Requirements  

E-Print Network (OSTI)

2012-2013 EARTH SCIENCES Lower-Division Requirements Math 20A_____ 20B_____ 20C_____ 20D (BILD 3) _____ SIO 50* _____ Group A: Earth Science Upper-Division Core Requirements (all courses _____ Introduction to Geophysics SIO 104 _____ Paleobiology and History of Life* Group B: Upper-Division Earth

Constable, Steve

331

Chemical Marketing and Economics Division reprints  

Science Journals Connector (OSTI)

Chemical Marketing and Economics Division reprints ... The ACS Chemical Marketing and Economics Division has available reprints of the symposiums listed below. ... Make checks payable to Chemical Marketing and Economics Division, ACS, and send to the assistant treasurer, H. C. McClure, Richardson Co., 2700 West Lake St., Melrose Park, Ill. ...

1968-09-16T23:59:59.000Z

332

The Division of Biology & Biomedical Sciences  

E-Print Network (OSTI)

The Division of Biology & Biomedical Sciences what will YOU discover? #12;620students more than 470faculty 36departments 12programs and one YOU. DBBS Division of Biology and Biomedical Sciences Washington. The Division of Biology and Biomedical Sciences (DBBS) is ideally positioned to foster the interdisciplinary

Kornfeld, S. Kerry

333

OFFICE OF THE DIVISION ENGINEER CORPS OF ENGINEERS, MISSISSIPPI VALLEY DIVISION  

E-Print Network (OSTI)

OFFICE OF THE DIVISION ENGINEER CORPS OF ENGINEERS, MISSISSIPPI VALLEY DIVISION P.O. BOX 80, 1400 39181-0080, who is also the Division Engineer, Department of the Army, Mississippi Valley Division River at Cairo, Illinois and Baton Rouge, Louisiana, is approximately 726 miles long. Navigation

US Army Corps of Engineers

334

Neutrinos from Gamma Ray Bursts  

E-Print Network (OSTI)

The observed fluxes of cosmic rays and gamma rays are used to infer the maximum allowed high-energy neutrino flux allowed for Gamma Ray Bursts (GRBs), following Mannheim, Protheroe, and Rachen (2000). It is shown that if GRBs produce the ultrahigh-energy cosmic rays, they should contribute (a) at least 10% of the extragalactic gamma ray background between 3 MeV and 30 GeV, contrary to their observed energy flux which is only a minute fraction of this flux, and (b) a cumulative neutrino flux a factor of 20 below the AMANDA (Neutrino 2000) limit on isotropic neutrinos. This could have two implications, either GRBs do not produce the ultrahigh energy cosmic rays or that the GRBs are strongly beamed and emit most of their power at energies well above 100 GeV implausibly increasing the energy requirements, but consistent with the marginal detections of a few low-redshift GRBs by MILAGRITO, HEGRA-AIROBICC, and the Tibet-Array. All crucial measurements to test the models will be available in the next few years. These are measurements of (i) high-energy neutrinos with AMANDA-ICECUBE or an enlarged ANTARES/NESTOR ocean detector, (ii) GRB redshifts from HETE-2 follow-up studies, and (iii) GRB spectra above 10 GeV with low-threshold imaging air Cherenkov telescopes such as MAGIC and the space telescopes AGILE and GLAST.

Karl Mannheim

2000-10-18T23:59:59.000Z

335

Muon neutrino disappearance at MINOS  

SciTech Connect

A strong case has been made by several experiments that neutrinos oscillate, although important questions remain as to the mechanisms and precise values of the parameters. In the standard picture, two parameters describe the nature of how the neutrinos oscillate: the mass-squared difference between states and the mixing angle. The purpose of this thesis is to use data from the MINOS experiment to precisely measure the parameters associated with oscillations first observed in studies of atmospheric neutrinos. MINOS utilizes two similar detectors to observe the oscillatory nature of neutrinos. The Near Detector, located 1 km from the source, observes the unoscillated energy spectrum while the Far Detector, located 735 km away, is positioned to see the oscillation signal. Using the data in the Near Detector, a prediction of the expected neutrino spectrum at the Far Detector assuming no oscillations is made. By comparing this prediction with the MINOS data, the atmospheric mixing parameters are measured to be {Delta}m{sub 32}{sup 2} = 2.45{sub +0.12}{sup -0.12} x 10{sub -3} eV{sup 2} and sin{sup 2}(2{theta}{sub 32}) = 1.00{sub -0.04}{sup +0.00} (> 0.90 at 90% confidence level).

Armstrong, R.; /Indiana U.

2009-08-01T23:59:59.000Z

336

Environmental Energy Technologies Division News  

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

1999: 1999: Vol. 1, No. 1 Characterizing Diesel Particle Exhaust Miscellaneous Electricity Use COMIS: An Interzonal Air-Flow Model GenOpt: A Generic Optimization Program News from the D.C. Office Around the Division The A-Team Report Sources and Credits PDF of EETD News Characterizing Diesel Particle Exhaust Recent concern about the risks to human health from airborne particulates such as those in diesel exhaust has motivated a group at the Environmental Energy Technologies Division to investigate the use of scattered polarized light. The goals are to characterize these particles and develop an instrument to measure these characteristics in real time. Having such an instrument can help regulatory authorities develop standards and monitor air quality. Airborne particulates, especially those less than 2.5

337

Environmental Energy Technologies Division News  

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

1, No. 4 [http://eetd.lbl.gov/newsletter/nl43/] 1, No. 4 [http://eetd.lbl.gov/newsletter/nl43/] Environmental Energy Technologies Division News [http://eetd.lbl.gov/newsletter/] ©2013 Environmental Energy Technologies Division [http://eetd.lbl.gov/] E.O. Lawrence Berkeley National Laboratory [http://www.lbl.gov/] Disclaimer [http://www.lbl.gov/Disclaimers.html] SPRING 2013: VOL. 11, NO. 4 Deep Energy Retrofits Health-Based Ventilation Standard-Interview with Max Sherman Energy-Efficient School Districts Guide Nanometer Laser-Based Chemical Sensing Demand-to-Grid Lab Research Highlights Sources and Credits Research that examines how homes can save 70 percent or more of their energy use is this issue's cover story. EETD researchers studied several northern California homes whose owners implemented their own plans to make extreme reductions in energy consumption and found that

338

Environmental Energy Technologies Division News  

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

9, No. 3 [http://eetd.lbl.gov/newsletter/nl34/] 9, No. 3 [http://eetd.lbl.gov/newsletter/nl34/] Environmental Energy Technologies Division News [http://eetd.lbl.gov/newsletter/] © 2011 Environmental Energy Technologies Division [http://eetd.lbl.gov/] E.O. Lawrence Berkeley National Laboratory [http://www.lbl.gov/] Disclaimer [http://www.lbl.gov/Disclaimers.html] WINTER NEWSLETTER: VOL. 9, NO. 3 Commercial Buildings Clean Energy Research Center OpenADR Alliance Energy Efficient Data Center Retrofit Home Energy Score Pilot Program Tracking the Sun III Research Highlights Sources and Credits The Department of Energy's Commercial Building Partnerships initiative is establishing collaborations to increase energy efficiency in new and existing commercial buildings. It teams National Laboratory researchers and private technical experts with commercial building owners and

339

Environmental Energy Technologies Division News  

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

0, No. 2 [http://eetd.lbl.gov/newsletter/nl37/] 0, No. 2 [http://eetd.lbl.gov/newsletter/nl37/] Environmental Energy Technologies Division News [http://eetd.lbl.gov/newsletter/] © 2011 Environmental Energy Technologies Division [http://eetd.lbl.gov/] E.O. Lawrence Berkeley National Laboratory [http://www.lbl.gov/] Disclaimer [http://www.lbl.gov/Disclaimers.html] FALL 2011: VOL. 10, NO. 2 Carbon Cycle 2.0 Analysis Team Carbon Sequestration Study Materials Genome Project Increased Building Ventilation VOC Cleaning Technology Fort Irwin Lighting Testbed Tracking the Sun IV Cool Coatings for Cars Research Highlights Sources and Credits Understanding how effectively new technologies can save energy, water, and materials-as well as reduce energy costs and greenhouse gas emissions-is the goal of the Carbon Cycle 2.0 Energy and

340

Environmental Energy Technologies Division News  

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

2011: Vol. 10, No. 1 [http://eetd.lbl.gov/newsletter/nl36/] 2011: Vol. 10, No. 1 [http://eetd.lbl.gov/newsletter/nl36/] Environmental Energy Technologies Division News [http://eetd.lbl.gov/newsletter/] © 2011 Environmental Energy Technologies Division [http://eetd.lbl.gov/] E.O. Lawrence Berkeley National Laboratory [http://www.lbl.gov/] Disclaimer [http://www.lbl.gov/Disclaimers.html] SUMMER 2011: VOL. 10, NO. 1 Energy Information Systems ISO 50001 BEST Dairy Benchmarking Program Wind Power Report Cool Roofs Workshop Research Highlights Sources and Credits In this issue, you can learn about EETD's work to analyze energy information systems (EIS) and improve their utilization in commercial buildings. We also look at ISO 50001, a new standard that helps industrial and commercial enterprises operate energy-efficiently,

Note: This page contains sample records for the topic "neutrino astrophysics division" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Environmental Energy Technologies Division News  

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

8, No. 3 [http://eetd.lbl.gov/newsletter/nl30/] 8, No. 3 [http://eetd.lbl.gov/newsletter/nl30/] Environmental Energy Technologies Division News [http://eetd.lbl.gov/newsletter/] © 2010 Environmental Energy Technologies Division [http://eetd.lbl.gov/] E.O. Lawrence Berkeley National Laboratory [http://www.lbl.gov/] Disclaimer [http://www.lbl.gov/Disclaimers.html] WINTER NEWSLETTER: VOL. 8, NO. 3 Hidden Costs of Energy Production NRC Report The Rosenfeld Named After California's Godfather of Energy Solar Photovoltaic Report II Release Methane in Central California Wind Power Property Values Community Wind FABS21 Release Franchise Tax Board Data Center Project Sources and Credits This issue addresses everything from a National Academy of Sciences report on the hidden costs of energy production to tools for making semiconductor fabrication facilities and data centers more

342

Environmental Energy Technologies Division News  

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

Containing the Effects of Containing the Effects of Chemical and Biological Agents in Buildings Lawrence Berkeley National Laboratory Air Quality Advanced Technologies Building Technologies Energy Analysis Indoor Environment Vol. 3 No. 3 News 1 Containing the Effects of Chemical and Biological Agents in Buildings 3 Laser Ultrasonic Sensor Streamlines Papermaking Process 5 Building a Smarter Light: The IBECS Network/Ballast Interface 6 IPMVP-from a DOE-Funded Iniative to a Not-for-Profit Organization 8 Skylight Well Reduces Solar Heat Gain 9 Research Highlights The mission of the Environmental Energy Technologies Division is to perform research and development leading to better energy technologies and the reduction of adverse energy- related environmental impacts. Environmental Energy Technologies Division

343

Environmental Energy Technologies Division News  

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

Consumers Kept Consumers Kept the Lights On Lawrence Berkeley National Laboratory Atmospheric Sciences Advanced Technologies Building Technologies Energy Analysis Indoor Environment Vol. 3 No. 4 News 1 California Consumers Kept the Lights On 3 A Quick and Easy Web-Based Assess- ment Tool for Day/Electric Lighting 5 Berkeley Lab Model Tracks Indoor Anthrax Dispersal 7 Rating "Green" Laboratories-Labs21 Environmental Performance Criteria 9 Research Highlights The mission of the Environmental Energy Technologies Division is to perform research and development leading to better energy technologies and the reduction of adverse energy- related environmental impacts. Environmental Energy Technologies Division continued on page 2 In this Issue C alifornia consumers-not mild weather or the cooling economy-should get credit

344

Environmental Energy Technologies Division News  

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

9, No. 4 [http://eetd.lbl.gov/newsletter/nl35/] 9, No. 4 [http://eetd.lbl.gov/newsletter/nl35/] Environmental Energy Technologies Division News [http://eetd.lbl.gov/newsletter/] © 2011 Environmental Energy Technologies Division [http://eetd.lbl.gov/] E.O. Lawrence Berkeley National Laboratory [http://www.lbl.gov/] Disclaimer [http://www.lbl.gov/Disclaimers.html] SPRING 2011: VOL. 9, NO. 4 Fuel Cell Research Programmable Thermostats A Bright Spot for Solar Saving Electricity in a Hurry Nanostructured Antifogging Coatings Fluorescent Lighting Research Highlights Sources and Credits This month, EETD News highlights some of its research activities in fuel cells; an energy efficiency expert describes how Japan can save energy in a hurry to help offset supply losses from Fukushima; and a lighting expert discusses why fluorescent

345

Environmental Energy Technologies Division News  

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

8, No. 2 [http://eetd.lbl.gov/newsletter/nl29/] 8, No. 2 [http://eetd.lbl.gov/newsletter/nl29/] Environmental Energy Technologies Division News [http://eetd.lbl.gov/newsletter/] © 2009 Environmental Energy Technologies Division [http://eetd.lbl.gov/] E.O. Lawrence Berkeley National Laboratory [http://www.lbl.gov/] Disclaimer [http://www.lbl.gov/Disclaimers.html] FALL NEWSLETTER: VOL. 8, NO. 2 Closing in on Zero-Energy Buildings Heinz Award Honors Berkeley Lab's Ashok Gadgil Green Chemistry: Lasers Detect Explosives and Hazardous Waste Photocatalytic Oxidation (PCO) Air Cleaners: Reducing Energy Use While Clearing the Air Energy Reduction for Energy Research New Study Sheds Light on the Growing U.S. Wind Power Market Recovery Act Funding Enables Berkeley Lab to Help Federal Agencies Improve Energy Efficiency Research

346

Environmental Energy Technologies Division News  

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

2, No. 1 [http://eetd.lbl.gov/newsletter/nl44/] 2, No. 1 [http://eetd.lbl.gov/newsletter/nl44/] Environmental Energy Technologies Division News [http://eetd.lbl.gov/newsletter/] ©2013 Environmental Energy Technologies Division [http://eetd.lbl.gov/] E.O. Lawrence Berkeley National Laboratory [http://www.lbl.gov/] Disclaimer [http://www.lbl.gov/Disclaimers.html] SUMMER 2013: VOL. 12, NO. 1 Buildings Performance Database EnergyIQ Wind Technologies Report Lighting Testbeds Q&A with Ed Vine SEAD Report - India Efficient A/C Li/S Cathode Technology Conductive Binder for Li-ion Batteries Research Highlights Sources and Credits We cover a lot of ground in the issue of EETD News you're now reading. Investing in energy performance upgrades for your commercial building? Read about the Building Performance Database. Wondering about the state of wind power in the U.S.? We've got you covered with the

347

Environmental Energy Technologies Division News  

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

11, No. 3 [http://eetd.lbl.gov/newsletter/nl42/] 11, No. 3 [http://eetd.lbl.gov/newsletter/nl42/] Environmental Energy Technologies Division News [http://eetd.lbl.gov/newsletter/] ©2013 Environmental Energy Technologies Division [http://eetd.lbl.gov/] E.O. Lawrence Berkeley National Laboratory [http://www.lbl.gov/] Disclaimer [http://www.lbl.gov/Disclaimers.html] WINTER 2013: VOL. 11, NO. 3 The New York Times Building Building Control Virtual Test Bed Simergy Climate Change and the Insurance Industry Energy Storage Research Hub ARPA-E Funds Berkeley Lab Projects Utility Energy-Efficiency Programs California's Energy Future FLEXLAB Testbeds Construction FLEXLAB Partners Research Highlights Sources and Credits Better tools to simulate building energy use, new funding for advanced research in batteries and energy-efficient

348

Stimulated Neutrino Transformation Through Turbulence  

E-Print Network (OSTI)

We derive an analytical solution for the flavor evolution of a neutrino through a turbulent density profile which is found to accurately predict the amplitude and transition wavelength of numerical solutions on a case-by-case basis. The evolution is seen to strongly depend upon those Fourier modes in the turbulence which are approximately the same as the splitting between neutrino eigenvalues. Transitions are strongly enhanced by those Fourier modes in the turbulence which are approximately the same as the splitting between neutrino eigenvalues. We also find a suppression of transitions due to the long wavelength modes when the ratio of their amplitude and the wavenumber is of order, or greater than, the first root of the Bessel function $J_0$.

Kelly M. Patton; James P. Kneller; Gail C. McLaughlin

2014-04-15T23:59:59.000Z

349

Neutrino Physics at DPF 2013  

E-Print Network (OSTI)

The field of neutrino physics was covered at DPF 2013 in 32 talks, including three on theoretical advances and the remainder on experiments that spanned at least 17 different detectors. This summary of those talks cannot do justice to the wealth of information presented, but will provide links to other material where possible. There were allso two plenary session contributions on neutrino physics at this meeting: the current status of what we know about neutrino (oscillation) physics was outlined by Huber, and the next steps in long baseline oscillation expeirments were described by Fleming. This article covers a subset of the topics discussed at the meeting, with emphasis given to those talks that showed data or new results.

Deborah A. Harris

2013-10-25T23:59:59.000Z

350

Environmental Energy Technologies Division News  

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

fi lter could also help fi lter could also help California comply with tighter U.S. EPA arsenic drinking-water standard. A shok G ad g i l, a s c ient i st i n t he Environmental Energy Technologies Division at Lawrence Berkeley National Laboratory (Berkeley Lab), is developing a cheap and effective way to provide safe drinking water to 60 million Bangladeshis who live with the threat of arsenic poisoning.

351

Astron. Astrophys. 335, 10851092 (1998) ASTROPHYSICS  

E-Print Network (OSTI)

equation of MHD, the equation which governs the energy re- lease process in solar flares. The similaritiesAstron. Astrophys. 335, 1085­1092 (1998) ASTRONOMY AND ASTROPHYSICS Solar flare cellular automata February 1998 / Accepted 28 April 1998 Abstract. We show that the Cellular Automaton (CA) model for Solar

Isliker, Heinz

352

A chance to do better for astrophysics  

Science Journals Connector (OSTI)

......PPARC seems too small to be viable or economical, the ques- tion then arises as to whether...University College London. Given that the High Energy Physics com- munity is mainly engaged...responsive grants lines for astrophysics and solar-sys- tem science from the funding line......

Mike Barlow

2006-06-01T23:59:59.000Z

353

Neutrino interactions in oscillation experiments  

Science Journals Connector (OSTI)

We calculate the neutrino induced cross sections relevant for oscillation experiments, including the ?-lepton threshold for quasielastic, resonance and deep-inelastic scattering. In addition to threshold effects, we include nuclear corrections for heavy targets which are moderate for quasielastic and large for single pion production. The nuclear effects for deep-inelastic reactions are small. We present cross sections together with their nuclear corrections for various channels which are useful for interpreting the experimental results and for determining parameters of the neutrino sector. Finally, we calculate the ?-lepton event rates for the OPERA LBL experiment.

E. A. Paschos and J. Y. Yu

2002-01-07T23:59:59.000Z

354

Solar neutrinos and the sun  

E-Print Network (OSTI)

We present updated standard solar models (SSMs) that incorporate the latest results for nuclear fusion rates, recently published. We show helioseismic results for high and low metallicity compositions and also for an alternative set of solar abundance, derived from 3D model atmospheres, which give intermediate results. For the high and low metallicity models, we show that current solar neutrino data can not differentiate between models and that a measurement of the CNO fluxes is necessary to achieve that goal. A few additional implications of a hypothetical measurement of CNO neutrinos, both in terms of solar and stellar physics, are discussed.

Aldo Serenelli

2011-09-12T23:59:59.000Z

355

End of the cosmic neutrino energy spectrum  

E-Print Network (OSTI)

There may be a high-energy cutoff of neutrino events in IceCube data. In particular, IceCube does not observe the Standard Model Glashow-resonance events expected at 6.3 PeV. There are also no higher-energy neutrino signatures in the ANITA and Auger experiments. This absence of high-energy neutrino events motivates models with a fundamental restriction on neutrino energies above a few PeV. The simplest scenario to terminate the neutrino spectrum is Lorentz-invariance violating with a limiting neutrino velocity that is smaller than the speed of light. A consequence is that charged pions are stable above four times the maximum neutrino energy and may serve as a cosmic ray primary.

Anchordoqui, L A; Goldberg, H; Learned, J G; Marfatia, D; Pakvasa, S; Paul, T C; Weiler, T J

2014-01-01T23:59:59.000Z

356

Neutrino facility and neutrino physics in J-PARC  

Science Journals Connector (OSTI)

......pulse. The repetition rate of the operation cycle...decay above 5 GeV/c pass through the beam dump...along with measuring rates for exclusive neutrino...by INGRID. The event rate in INGRID (1.5 events...beam direction. 3.2. Physics results Physics results......

Tetsuro Sekiguchi

2012-01-01T23:59:59.000Z

357

Neutrino tomography: Tevatron mapping versus the neutrino sky  

Science Journals Connector (OSTI)

... adequate reconstruction for noninvasive imaging in medicine. Geophysical densities follow from the mapping of the Radon or Fourier transform of certain neutrino projections, and not from the Volkova-Zatsepin scheme, ... problem was first addressed by Radon24 who derived what has now become known as the Radon transform. Tomography10'19'20'25 can be defined as reconstructive imaging by means of ...

Thomas L. Wilson

1984-05-03T23:59:59.000Z

358

THE NEUTRINO ENERGY & DIRECTION RESOLUTIONS IN THE INO-ICAL DETECTOR Moon Moon Devi  

E-Print Network (OSTI)

-based Neutrino Observatory (INO) [1] is a proposed underground facility for hosting de- cisive neutrino

Shyamasundar, R.K.

359

E-Print Network 3.0 - atmospheric muon neutrino Sample Search...  

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

neutrino Search Powered by Explorit Topic List Advanced Search Sample search results for: atmospheric muon neutrino...

360

E-Print Network 3.0 - atmospheric muon neutrinos Sample Search...  

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

neutrinos Search Powered by Explorit Topic List Advanced Search Sample search results for: atmospheric muon neutrinos...

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

Sensitivity of the icecube detector to astrophysical sources of high energy muon neutrinos  

E-Print Network (OSTI)

as a function of muon energy and angle of incidence. WeKopp and Voss [38] (for muon energies smaller than 10 5.5and Stanev [33] (for muon energies greater than 10 5.5 GeV).

2004-01-01T23:59:59.000Z

362

Solar Neutrinos and Solar Oscillations  

Science Journals Connector (OSTI)

...solar core, it is not out of the question that they induce motion that influences substantially the rates of the various thermonuclear reactions that emit the neutrinos. The basic processes of seismic inference will be discussed briefly, followed by a summary...

1994-01-01T23:59:59.000Z

363

Charge radius of the neutrino  

Science Journals Connector (OSTI)

Using the pinch technique we construct at one-loop order a neutrino charge radius, which is finite, depends neither on the gauge-fixing parameter nor on the gauge-fixing scheme employed, and is process independent. This definition stems solely from an effective proper photon-neutrino one-loop vertex, with no reference to box or self-energy contributions. The role of the WW box in this construction is critically examined. In particular it is shown that the exclusion of the effective WW box from the definition of the neutrino charge radius is not a matter of convention but is in fact dynamically realized when the target fermions are right-handedly polarized. In this way we obtain a unique decomposition of effective self-energies, vertices, and boxes, which separately respect electroweak gauge invariance. We elaborate on the tree-level origin of the mechanism which enforces at the one-loop level massive cancellations among the longitudinal momenta appearing in the Feynman diagrams, and in particular those associated with the non-Abelian character of the theory. Various issues related to the known connection between the pinch technique and the background field method are further clarified. Explicit closed expressions for the neutrino charge radius are reported.

J. Bernabu; L. G. Cabral-Rosetti; J. Papavassiliou; J. Vidal

2000-11-10T23:59:59.000Z

364

Neutrinos from Gamma Ray Bursts  

Science Journals Connector (OSTI)

The observed fluxes of cosmic rays and gamma rays are used to infer the maximum allowed high-energy neutrino flux allowed for Gamma Ray Bursts (GRBs) following Reference [1]. It is shown that if GRBs produce the ultrahigh-energy cosmic rays they should contribute (a) at least 10% of the extragalactic gamma ray background between 3 MeV and 30 GeV contrary to their observed energy flux which is only a minute fraction of this flux and (b) a cumulative neutrino flux a factor of 20 below the AMANDA-?2000 limit on isotropic neutrinos. This could have two implications either GRBs do not produce the ultrahigh energy cosmic rays [2 3] or that the GRBs are strongly beamed and emit most of their power at energies well above 100 GeV [4] implausibly increasing the energy requirements but consistent with the marginal detections of a few low-redshift GRBs by MILAGRITO [5] HEGRA-AIROBICC [6] and the Tibet-Array [7]. All crucial measurements to test the models will be available in the next few years. These are measurements of (i) high-energy neutrinos with AMANDA-ICECUBE or an enlarged ANTARES/NESTOR ocean detector (ii) GRB redshifts from HETE-2 follow-up studies and (iii) GRB spectra above 10 GeV with low-threshold imaging air Cherenkov telescopes such as MAGIC and the space telescopes AGILE and GLAST.

Karl Mannheim

2001-01-01T23:59:59.000Z

365

What are the Neutrino Masses  

E-Print Network (OSTI)

The possible source of the production of neutrino with large masses is considered. For this purpose the reaction nu+n to e+p+gamma, in which the electron in neW+ vertex is produced off-mass-shell, is studied.

V. P. Efrosinin

2009-04-03T23:59:59.000Z

366

Why Neutrino Lines are Hypersharp  

E-Print Network (OSTI)

It was recently pointed out that mono-energetic neutrino lines from the 2-body decay of tritium (tau ~ 18-y) can be emitted, a significant fraction, with natural line width (~10-24 eV) for hypersharp resonance transitions 3H--> line broadening in resonances of short lived (tau ~ microsec) states.

R. S. Raghavan

2009-08-20T23:59:59.000Z

367

Neutrinos help reconcile Planck measurements with both Early and Local Universe  

E-Print Network (OSTI)

In light of the recent BICEP2 B-mode polarization detection, which implies a large inflationary tensor-to-scalar ratio r_{0.05}=0.2^{+0.07}_{-0.05}, we re-examine the evidence for an extra sterile massive neutrino, originally invoked to account for the tension between the cosmic microwave background (CMB) temperature power spectrum and local measurements of the expansion rate H0 and cosmological structure. With only the standard active neutrinos and power-law scalar spectra, this detection is in tension with the upper limit of rgravitational waves. An extra sterile species with the same energy density as is needed to reconcile the CMB data with H0 measurements can also alleviate this new tension. By combining data from the Planck and ACT/SPT temperature spectra, WMAP9 polarization, H_0, baryon acoustic oscillation and local cluster abundance measurements with BICEP2 data, we find the joint evidence for a sterile massive neutrino increases to DeltaNeff=0.98\\pm 0.26 for the effective number and ms= 0.52\\pm 0.13 eV for the effective mass or 3.8 sigma and 4 sigma evidence respectively. We caution the reader that these results correspond to a joint statistical evidence and, in addition, astrophysical systematic errors in the clusters and H0 measurements, and small-scale CMB data could weaken our conclusions.

Cora Dvorkin; Mark Wyman; Douglas H. Rudd; Wayne Hu

2014-09-17T23:59:59.000Z

368

First search for atmospheric and extraterrestrial neutrino-induced cascades with the IceCube detector  

Science Journals Connector (OSTI)

We report on the first search for atmospheric and for diffuse astrophysical neutrino-induced showers (cascades) in the IceCube detector using 257 days of data collected in the year 20072008 with 22 strings active. A total of 14 events with energies above 16TeV remained after event selections in the diffuse analysis, with an expected total background contribution of 8.33.6. At 90% confidence we set an upper limit of E2?90%CL<3.610-7??GeVcm-2s-1sr-1 on the diffuse flux of neutrinos of all flavors in the energy range between 24TeV and 6.6PeV assuming that ??E-2 and the flavor composition of the ?e?????? flux is 1?1?1 at the Earth. The atmospheric neutrino analysis was optimized for lower energies. A total of 12 events were observed with energies above 5TeV. The observed number of events is consistent with the expected background, within the uncertainties.

R. Abbasi et al. (IceCube Collaboration)

2011-10-03T23:59:59.000Z

369

Galactic halo origin of the neutrinos detected by IceCube  

Science Journals Connector (OSTI)

Recent IceCube results suggest that the first detection of very high energy astrophysical neutrinos have been accomplished. We consider these results at face value in a Galactic origin context. Emission scenarios from both the Fermi bubble and broader halo region are considered. We motivate that such an intensity of diffuse neutrino emission could be Galactic in origin if it is produced from an outflow into the halo region. This scenario requires cosmic ray transport within the outflow environment to be different to that inferred locally within the disk and that activity in the central part of the Galaxy accelerates cosmic rays to trans-knee energies before they escape into an outflow. The presence of a large reservoir of gas in a very extended halo around the Galaxy, recently inferred from x-ray observations, implies that the relatively modest acceleration power of 1039 erg s?1 in PeV energy cosmic rays may be sufficient to explain the observed neutrino flux. Such a luminosity is compatible with that required to explain the observed intensity of cosmic rays around the knee.

Andrew M. Taylor; Stefano Gabici; Felix Aharonian

2014-05-05T23:59:59.000Z

370

Cross section dependence of event rates at neutrino telescopes  

E-Print Network (OSTI)

We examine the dependence of event rates at neutrino telescopes on the neutrino-nucleon cross section for neutrinos with energy above 1 PeV, and contrast the results with those for cosmic ray experiments. Scaling of the ...

Marfatia, Danny; Seckel, D.; McKay, D. W.; Hussain, S.

2006-10-20T23:59:59.000Z

371

Amur Energy Division | Open Energy Information  

Open Energy Info (EERE)

Amur Energy Division Amur Energy Division Jump to: navigation, search Name Amur Energy Division Place 46001 Valencia, Spain Sector Solar Product Engineering and construction group specialising in large solar power plants. References AMUR[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! TODO: Determine if this company is valid. This article is a stub. You can help OpenEI by expanding it. Amur Energy Division is a company located in Spain. Related Links http://findarticles.com/p/articles/mi_m5CNK/is_2007_Jan_4/ai_n24998390/ http://www.businesswirenet.org/pr/index.php/id/jesus-linares-gil-chairman-and-ceo-of-ae http://solarstocks.blogspot.com/2007_01_01_archive.html References ↑ "Amur Energy Division" Retrieved from "http://en.openei.org/w/index.php?title=Amur_Energy_Division&oldid=391205"

372

Discovering Long Wavelength Neutrino Oscillations in the Distorted Neutrino Spectrum of Galactic Supernova Remnants  

E-Print Network (OSTI)

We investigate the muon neutrino event rate in km$^3$ neutrino telescopes due to a number of galactic supernova remnants expected on the basis of these objects' known $\\gamma$-ray signals. We evaluate the potential of these neutrino signals to exhibit evidence of the sub-dominant neutrino oscillations expected in various neutrino mixing schemes including pseudo-Dirac scenarios and the Exact Parity Model. With ten years' data, neutrino signals from Sgr A East should either discover or exclude neutrino oscillations governed by a $\\delta m^2$ parameter in the range $10^{-12}$ to $10^{-15}$ eV$^2$. Such a capability is not available to terrestrial or solar system neutrino experiments.

Roland M. Crocker; Fulvio Melia; Raymond R. Volkas

2001-06-06T23:59:59.000Z

373

Measuring active-to-sterile neutrino oscillations with neutral current coherent neutrino-nucleus scattering  

E-Print Network (OSTI)

Light sterile neutrinos have been introduced as an explanation for a number of oscillation signals at ?m[superscript 2]?1??eV[superscript 2]. Neutrino oscillations at relatively short baselines provide a probe of these ...

Anderson, A. J.

374

Effective Mass Matrix for Light Neutrinos Consistent with Solar and Atmospheric Neutrino Experiments  

E-Print Network (OSTI)

We propose an effective mass matrix for light neutrinos which is consistent with the mixing pattern indicated by solar and atmospheric neutrino experiments. Two scenarios for the mass eigenvalues are discussed and the connection with double beta decay is noted.

S. P. Rosen; Waikwok Kwong

1995-01-20T23:59:59.000Z

375

Neutron \\beta-decay as the origin of IceCube's PeV (anti)neutrinos  

E-Print Network (OSTI)

Motivated by the indications of a possible deficit of muon tracks in the first three-year equivalent dataset of IceCube we investigate the possibility that the astrophysical (anti)neutrino flux (in the PeV energy range) could originate from \\beta-decay of relativistic neutrons. We show that to accommodate IceCube observations it is necessary that only \\sim 10% of the emitted cosmic rays in the energy decade 10^{8.5} \\alt E_{CR}/GeV \\alt 10^{9.5}$, yielding antineutrinos on Earth (10^{5.5} \\alt E_{\\bar \

Anchordoqui, Luis A

2014-01-01T23:59:59.000Z

376

Astrophysical Model Selection in Gravitational Wave Astronomy  

E-Print Network (OSTI)

Theoretical studies in gravitational wave astronomy have mostly focused on the information that can be extracted from individual detections, such as the mass of a binary system and its location in space. Here we consider how the information from multiple detections can be used to constrain astrophysical population models. This seemingly simple problem is made challenging by the high dimensionality and high degree of correlation in the parameter spaces that describe the signals, and by the complexity of the astrophysical models, which can also depend on a large number of parameters, some of which might not be directly constrained by the observations. We present a method for constraining population models using a Hierarchical Bayesian modeling approach which simultaneously infers the source parameters and population model and provides the joint probability distributions for both. We illustrate this approach by considering the constraints that can be placed on population models for galactic white dwarf binaries ...

Adams, Matthew; Littenberg, Tyson

2012-01-01T23:59:59.000Z

377

Bubble Chambers for Experiments in Nuclear Astrophysics  

E-Print Network (OSTI)

A bubble chamber has been developed to be used as an active target system for low energy nuclear astrophysics experiments. Adopting ideas from dark matter detection with superheated liquids, a detector system compatible with gamma-ray beams has been developed. This detector alleviates some of the limitations encountered in standard measurements of the minute cross sections of interest to stellar environments. While the astrophysically relevant nuclear reaction processes at hydrostatic burning temperatures are dominated by radiative captures, in this experimental scheme we measure the time-reversed processes. Such photodisintegrations allow us to compute the radiative capture cross sections when transitions to excited states of the reaction products are negligible. Due to the transformation of phase space, the photodisintegration cross sections are up to two orders of magnitude higher. The main advantage of the new target-detector system is a density several orders of magnitude higher than conventional gas tar...

DiGiovine, B; Holt, R J; Rehm, K E; Raut, R; Robinson, A; Sonnenschein, A; Rusev, G; Tonchev, A P; Ugalde, C

2015-01-01T23:59:59.000Z

378

Towards the detection of cosmological relic neutrino with neutrino capture on a beta decaying nuclei  

E-Print Network (OSTI)

In this paper we report on recent results in the eld of the phenomenology of very low energy neutrino interactions. We briey describe the cross section calculation for Neutrino Capture on Beta decay nuclei (NCB). We show that the resulting cross section open the possibility to detect the cosmological relic neutrinos. With this achievement, the relic neutrino detection has been downscaled from a principle problem to a technological challenge. We also summarise the state of the art about possible detection techniques.

Messina, M; Mangano, G

2010-01-01T23:59:59.000Z

379

Emission angle distribution and flavor transformation of supernova neutrinos  

E-Print Network (OSTI)

Using moment equations we analyze collective flavor transformation of supernova neutrinos. We study the convergence of moment equations and find that numerical results using a few moment converge quite fast. We study effects of emission angle distribution of neutrinos on neutrino sphere. We study scaling law of the amplitude of neutrino self-interaction Hamiltonian and find that it depends on model of emission angle distribution of neutrinos. Dependence of neutrino oscillation on different models of emission angle distribution is studied.

Wei Liao

2009-06-28T23:59:59.000Z

380

Solar-neutrino problem: Some old solutions reexamined  

Science Journals Connector (OSTI)

Recent experimental data confirm the solar-neutrino problem and imply new neutrino physics. We review some of the less discussed proposals to solve this problem: (1) maximal vacuum mixing of three neutrino flavors, (2) vacuum oscillation of two neutrino flavors, and (3) neutrino decay. Each of these three solutions can fit the Cl37 and Kamiokande-II solar-neutrino-flux measurements. Their implications for the continuing Ga71 experiments and for other, future experiments are discussed.

Andy Acker; Sandip Pakvasa; James Pantaleone

1991-03-15T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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.


381

Black Hole Formation in Core-Collapse Supernovae and Time-of-Flight Measurements of the Neutrino Masses  

E-Print Network (OSTI)

Early black hole formation in core-collapse supernovae may be triggered by mass accretion or a change in the high-density equation of state. We consider the possibility that black hole formation happens when the flux of neutrinos is still measurably high. If this occurs, then the neutrino signal from the supernova will be terminated abruptly (the transition takes $\\lesssim 0.5$ ms). The properties and duration of the signal before the cutoff are important measures of both the physics and astrophysics of the cooling proto-neutron star. For the event rates expected in present and proposed detectors, the cutoff will generally appear sharp, thus allowing model-independent time-of-flight mass tests for the neutrinos after the cutoff. If black hole formation occurs relatively early, within a few ($\\sim 1$) seconds after core collapse, then the expected luminosities are of order $L_{BH} = 10^{52}$ erg/s per flavor. In this case, the neutrino mass sensitivity can be extraordinary. For a supernova at a distance $D = 10$ kpc, SuperKamiokande can detect a $\\bar{\

J. F. Beacom; R. N. Boyd; A. Mezzacappa

2000-10-19T23:59:59.000Z

382

Simple analytic model for astrophysical S factors  

SciTech Connect

We propose a physically transparent analytic model of astrophysical S factors as a function of a center-of-mass energy E of colliding nuclei (below and above the Coulomb barrier) for nonresonant fusion reactions. For any given reaction, the S(E) model contains four parameters [two of which approximate the barrier potential, U(r)]. They are easily interpolated along many reactions involving isotopes of the same elements; they give accurate practical expressions for S(E) with only several input parameters for many reactions. The model reproduces the suppression of S(E) at low energies (of astrophysical importance) due to the shape of the low-r wing of U(r). The model can be used to reconstruct U(r) from computed or measured S(E). For illustration, we parametrize our recent calculations of S(E) (using the Sao Paulo potential and the barrier penetration formalism) for 946 reactions involving stable and unstable isotopes of C, O, Ne, and Mg (with nine parameters for all reactions involving many isotopes of the same elements, e.g., C+O). In addition, we analyze astrophysically important {sup 12}C+{sup 12}C reaction, compare theoretical models with experimental data, and discuss the problem of interpolating reliably known S(E) values to low energies (E < or approx. 2-3 MeV).

Yakovlev, D. G.; Beard, M.; Gasques, L. R.; Wiescher, M. [Ioffe Physical Technical Institute, Poliekhnicheskaya 26, 194021 St. Petersburg (Russian Federation); Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556 (United States); Laboratorio Pelletron, Instituto de Fisica da Universidade de Sao Paulo, 05315-970, Sao Paulo, SP (Brazil); Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)

2010-10-15T23:59:59.000Z

383

Astrophysical Gyrokinetics: Basic Equations and Linear Theory  

E-Print Network (OSTI)

Magnetohydrodynamic (MHD) turbulence is encountered in a wide variety of astrophysical plasmas, including accretion disks, the solar wind, and the interstellar and intracluster medium. On small scales, this turbulence is often expected to consist of highly anisotropic fluctuations with frequencies small compared to the ion cyclotron frequency. For a number of applications, the small scales are also collisionless, so a kinetic treatment of the turbulence is necessary. We show that this anisotropic turbulence is well described by a low frequency expansion of the kinetic theory called gyrokinetics. This paper is the first in a series to examine turbulent astrophysical plasmas in the gyrokinetic limit. We derive and explain the nonlinear gyrokinetic equations and explore the linear properties of gyrokinetics as a prelude to nonlinear simulations. The linear dispersion relation for gyrokinetics is obtained and its solutions are compared to those of hot-plasma kinetic theory. These results are used to validate the performance of the gyrokinetic simulation code {\\tt GS2} in the parameter regimes relevant for astrophysical plasmas. New results on global energy conservation in gyrokinetics are also derived. We briefly outline several of the problems to be addressed by future nonlinear simulations, including particle heating by turbulence in hot accretion flows and in the solar wind, the magnetic and electric field power spectra in the solar wind, and the origin of small-scale density fluctuations in the interstellar medium.

Gregory G. Howes; Steven C. Cowley; William Dorland; Gregory W. Hammett; Eliot Quataert; Alexander A. Schekochihin

2005-11-30T23:59:59.000Z

384

Introduction of coherence in astrophysical spectroscopy  

E-Print Network (OSTI)

By confusing the radiance of a single mode light beam, constant in a transparent medium, with the irradiance which decreases away from the source, Menzel purports to show that coherent interactions of light with the diluted media of astrophysics, are negligible. Therefore, to study the interaction of light with gases, astrophysicists use Monte Carlo computations which work to study nuclear systems, but not optics: optical modes which may be defined in inhomogeneous media or for the emissions of single atoms interact coherently with these systems: a unique formula represents, according to the sign of a parameter, absorption and coherent emission. The optical and spectroscopic properties of a very simple model, an extremely hot source in an isotropic cloud of pure, low pressure, initially cold, huge hydrogen cloud are studied using Planck's and Einstein's theories. The similarities of the images and the spectra of this simple model with astronomical observations, for instance of SNR1987A, Einstein cross, lyman break galaxies, quasars,... is so large that this model may be an elementary first step in the study of many astrophysical objects. Adaptations of the model to complex astrophysical systems could represent them using only the old, standard theories of physics commonly used in laser spectroscopy.

Jacques Moret-Bailly

2010-02-08T23:59:59.000Z

385

Chemical Sciences Division | Advanced Materials |ORNL  

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

Chemical Sciences Chemical Sciences Division SHARE Chemical Sciences Division The Chemical Sciences Division performs discovery and uses inspired research to understand, predict, and control the physical processes and chemical transformations at multiple length and time scales, especially at interfaces. The foundation of the division is a strong Basic Energy Sciences (BES) portfolio that pushes the frontiers of catalysis, geosciences, separations and analysis, chemical imaging, neutron science, polymer science, and interfacial science. Theory is closely integrated with materials synthesis and characterization to gain new insights into chemical transformations and processes with the ultimate goal of predictive insights. Applied research programs naturally grow out of our fundamental

386

Administration and Organization Division of Graduate Affairs  

E-Print Network (OSTI)

. . . . . . . . . . . . Geoffrey W. Chase Imperial Valley Campus . . . . . . . . . . . . . . . . . . . . . . David E. Pearson the Imperial Valley Campus; Dean of the Graduate Division or designee, who will chair the committee; Provost

Gallo, Linda C.

387

EARTH SCIENCES DIVISION ANNUAL REPORT 1978  

E-Print Network (OSTI)

of Energy's Division of Geothermal Energy has undertaken aand Ghormley, E. L. , 1976. Geothermal energy conversion andsuch diverse areas as geothermal energy, oil recovery, in-

Authors, Various

2012-01-01T23:59:59.000Z

388

EARTH SCIENCES DIVISION. ANNUAL REPORT 1977.  

E-Print Network (OSTI)

8erkeley Laboratory (LBL), the Earth Sciences Division, wasactivation analysis: rare earth element distribution (D)can be used to generate earth- quake records for use in

Witherspoon, P.A.

2011-01-01T23:59:59.000Z

389

Supervisory General Engineer (Facility Engineering Division Director)  

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

A successful candidate in this position will lead the Facility Engineering Division by providing internal and independent safety system oversight of Waste Isolation Pilot Plant (WIPP) operations in...

390

Geothermal: Sponsored by OSTI -- Nuclear Technology Division...  

Office of Scientific and Technical Information (OSTI)

Nuclear Technology Division annual progress report for period ending June 30, 1973 Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On Home...

391

Colorado Air Pollution Control Division - Construction Permits...  

Open Energy Info (EERE)

Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Colorado Air Pollution Control Division - Construction Permits Forms and Air Pollutant Emission...

392

Procurement Division Introduction | Princeton Plasma Physics...  

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

Technology Transfer Furth Plasma Physics Library Procurement Division Introduction The Princeton Plasma Physics Laboratory (PPPL) is operated by Princeton University under...

393

X-Ray Science Division (XSD)  

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

X-Ray Science Division (XSD) Search Button About Welcome Overview Visiting the APS Mission & Goals Find People Organization Charts Committees Job Openings User Information...

394

Enforcement Letter, Westinghouse Waste Isolation Division - October...  

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

Division related to four noncompliances with the requirements of the Quality Assurance Rule andor the Occupational Radiation Protection Rule at DOE's Waste Isolation...

395

Daya Bay Reactor Neutrino Project at NERSC  

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

Daya Bay Reactor Neutrino Daya Bay Reactor Neutrino Experiment Daya Bay Reactor Neutrino Experiment Daya Bay is an international neutrino-oscillation experiment designed to determine the last unknown neutrino mixing angle θ13 using anti-neutrinos produced by the Daya Bay and Ling Ao Nuclear Power Plant reactors. The experiment is being built by blasting three kilometers of tunnel through the granite rock under the mountains where the power plants are located. Data collection is now scheduled to start in in 2011. On the PDSF cluster at NERSC, Daya Bay performs simulations of the detectors, reactors, and surrounding mountains to help design and anticipate detector properties and behavior. Once real data are available, Daya Bay will be using NERSC to analyze data and NERSC HPSS will be the central U.S. repository for all raw

396

Dynamical Collective Calculation of Supernova Neutrino Signals  

SciTech Connect

We present the first calculations with three flavors of collective and shock wave effects for neutrino propagation in core-collapse supernovae using hydrodynamical density profiles and the S matrix formalism. We explore the interplay between the neutrino-neutrino interaction and the effects of multiple resonances upon the time signal of positrons in supernova observatories. A specific signature is found for the inverted hierarchy and a large third neutrino mixing angle and we predict, in this case, a dearth of lower energy positrons in Cherenkov detectors midway through the neutrino signal and the simultaneous revelation of valuable information about the original fluxes. We show that this feature is also observable with current generation neutrino detectors at the level of several sigmas.

Gava, Jerome; Kneller, James; Volpe, Cristina; McLaughlin, G. C. [Institut de Physique Nucleaire, F-91406 Orsay cedex, CNRS/IN2P3 and University of Paris-XI (France); Department of Physics, North Carolina State University, Raleigh, North Carolina 27695-8202 (United States)

2009-08-14T23:59:59.000Z

397

Exotic Solutions to the Solar Neutrino Problem and Some Implications for Low Energy Solar Neutrino Experiments  

E-Print Network (OSTI)

In this talk, I review, from the phenomenological point of view, solutions to the solar neutrino problem, which are not provided by the conventional neutrino oscillation induced by mass and flavor mixing, and show that they can provide a good fit to the observed data. I also consider some simple implications for low energy solar neutrino experiments.

H. Nunokawa

2001-05-03T23:59:59.000Z

398

Neutrino-electron scattering and the choice between different MSW solutions of the solar neutrino problem  

SciTech Connect

We consider the scattering of solar neutrinos by electrons as a means for distinguishing between MSW solutions of the solar neutrino problem. In terms of the ratio R between the observed cross-section and that for pure electron-type neutrinos, we find that some correlation between the value R and the appropriate solution. 9 refs., 3 figs.

Rosen, S.P.; Gelb, J.M.

1987-01-01T23:59:59.000Z

399

Majorana Neutrino Masses from Neutrinoless Double Beta Decay and Cosmology  

E-Print Network (OSTI)

When three Majorana neutrinos describe the solar and atmospheric neutrino data via oscillations, a nonzero measurement of neutrinoless double beta ($0\

V. Barger; K. Whisnant

1999-04-08T23:59:59.000Z

400

EA-1943: Proposed Long Baseline Neutrino Experiment (LBNE) at...  

Energy Savers (EERE)

943: Proposed Long Baseline Neutrino Experiment (LBNE) at Fermilab, Batavia, Illinois EA-1943: Proposed Long Baseline Neutrino Experiment (LBNE) at Fermilab, Batavia, Illinois...

Note: This page contains sample records for the topic "neutrino astrophysics division" 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.


401

Measuring neutrino oscillation parameters using $\  

SciTech Connect

MINOS is a long-baseline neutrino oscillation experiment. It consists of two large steel-scintillator tracking calorimeters. The near detector is situated at Fermilab, close to the production point of the NuMI muon-neutrino beam. The far detector is 735 km away, 716m underground in the Soudan mine, Northern Minnesota. The primary purpose of the MINOS experiment is to make precise measurements of the 'atmospheric' neutrino oscillation parameters ({Delta}m{sub atm}{sup 2} and sin{sup 2} 2{theta}{sub atm}). The oscillation signal consists of an energy-dependent deficit of {nu}{sub {mu}} interactions in the far detector. The near detector is used to characterize the properties of the beam before oscillations develop. The two-detector design allows many potential sources of systematic error in the far detector to be mitigated by the near detector observations. This thesis describes the details of the {nu}{sub {mu}}-disappearance analysis, and presents a new technique to estimate the hadronic energy of neutrino interactions. This estimator achieves a significant improvement in the energy resolution of the neutrino spectrum, and in the sensitivity of the neutrino oscillation fit. The systematic uncertainty on the hadronic energy scale was re-evaluated and found to be comparable to that of the energy estimator previously in use. The best-fit oscillation parameters of the {nu}{sub {mu}}-disappearance analysis, incorporating this new estimator were: {Delta}m{sup 2} = 2.32{sub -0.08}{sup +0.12} x 10{sup -3} eV{sup 2}, sin {sup 2} 2{theta} > 0.90 (90% C.L.). A similar analysis, using data from a period of running where the NuMI beam was operated in a configuration producing a predominantly {bar {nu}}{sub {mu}} beam, yielded somewhat different best-fit parameters {Delta}{bar m}{sup 2} = (3.36{sub -0.40}{sup +0.46}(stat.) {+-} 0.06(syst.)) x 10{sup -3}eV{sup 2}, sin{sup 2} 2{bar {theta}} = 0.86{sub -0.12}{sup _0.11}(stat.) {+-} 0.01(syst.). The tension between these results is intriguing, and additional antineutrino data is currently being taken in order to further investigate this apparent discrepancy.

Backhouse, Christopher James; /Oxford U.

2011-02-01T23:59:59.000Z

402

Coherent Neutrino Scattering and Stellar Collapse  

Science Journals Connector (OSTI)

Freedman has shown that coherency and the neutral current theory of neutrinos imply a scattering cross section for neutrinos off heavy nuclei proportional to the square of the atomic weight. The collapse of an iron-core star produces a hot neutron star surrounded by a thin iron layer. Because of the large scattering rate in the outer layer, neutrinos from the hot neutron core are able to accelerate the iron layer to above escape velocity.

James R. Wilson

1974-04-15T23:59:59.000Z

403

On the Electric Charge of the Neutrino  

E-Print Network (OSTI)

Exact expression is obtained for the differential cross section of elastic electroweak scattering of longitudinal polarized massive Dirac neutrinos with the electric charge and anomalous magnetic moment on a spinless nucleus. This formula contains all necessary information about the nature of the neutrino mass, charge and magnetic moment. Some of them state that between the mass of the neutrino its electric charge there exists an interconnection.

Rasulkhozha S. Sarafiddinov

2010-12-09T23:59:59.000Z

404

Nuclear correction factors from neutrino DIS  

E-Print Network (OSTI)

Neutrino Deep Inelastic Scattering on nuclei is an essential process to constrain the strange quark parton distribution functions in the proton. The critical component on the way to using the neutrino DIS data in a proton PDF analysis is understanding the nuclear effects in parton distribution functions. We parametrize these effects by nuclear parton distribution functions and we use this framework to analyze the consistency of neutrino DIS data with other nuclear data.

K. Kovarik

2011-07-15T23:59:59.000Z

405

Superheavy sterile neutrinos as dark matter  

E-Print Network (OSTI)

(Chair of Committee) Ronald A. Bryan (Member) S ephen A. Fulling (Member) Thomas Adair, III (Head of Department) May 2000 Major Subject: Physics ABSTRACT Superheavy Sterile Neutrinos as Dark Matter. (May 2000) Yongjun Tang, B. S. , Jilin... this research. Thanks also go to Dr. Ronald A. Bryan and Dr. Stephen A. Fulling for being my committee members. vu TABLE OF CONTENTS CHAPTER Page I INTRODUCTION . II DARK MATTER MODELS III NEUTRINO OSCILLATION . A. Neutrino Oscillation in Vacuum B...

Tang, Yongjun

2012-06-07T23:59:59.000Z

406

The Invisible Axion and Neutrino Masses  

E-Print Network (OSTI)

We show that in any invisible axion model due to the effects of effective non-renormalizable interactions related to an energy scale near the Peccei-Quinn, grand unification or even the Planck scale, active neutrinos necessarily acquire masses in the sub-eV range. Moreover, if sterile neutrinos are also included and if appropriate cyclic $Z_N$ symmetries are imposed, it is possible that some of these neutrinos are heavy while others are light.

Alex G. Dias; V. Pleitez

2005-11-09T23:59:59.000Z

407

Pion condensation in a dense neutrino gas  

E-Print Network (OSTI)

We argue that using an equilibrated gas of neutrinos it is possible to probe the phase diagram of QCD for finite isospin and small baryon chemical potentials. We discuss this region of the phase diagram in detail and demonstrate that for large enough neutrino densities a Bose-Einstein condensate of positively charged pions arises. Moreover, we show that for nonzero neutrino density the degeneracy in the lifetimes and masses of the charged pions is lifted.

Hiroaki Abuki; Tomas Brauner; Harmen J. Warringa

2009-08-26T23:59:59.000Z

408

Nuclear Data for Astrophysics: Collections at NucAstroData.org  

DOE Data Explorer (OSTI)

In May of 2003, Dr. Michael Smith, Physics Division, ORNL, published a paper announcing the launch of the new website NucAstroData.org and the rationale behind it. An excerpt from the abstract of that paper, found in volume 718, pages 339-346, of ScienceDirect - Nuclear Physics A, explains: "In order to address important astrophysics problems such as the origin of the chemical elements, the inner workings of our Sun, and the evolution of stars, crucial nuclear datasets are needed. Recent evaluation and dissemination efforts have produced a number of such datasets, many of which are online and readily available to the research community. Current international efforts in this field are, unfortunately, insufficient to keep pace with the latest nuclear physics measurements and model calculations. A dedicated effort is required to update and expand existing datasets. I discuss several strategies and new initiatives that would ensure a more effective utilization of nuclear data in astrophysics. These include launching a new web site, www.nucastrodata.org, to aid in locating available nuclear data sets, and an interactive online plotting program with an easy-to-use graphical user interface to over 8000 reaction rates." This website continues to be resource for the nuclear astrophysics community. NucAstroData provides both links to datasets around the world and a repository where researchers can upload their own data. Tools for generating and manipulating reaction rates, merging libraries of data, plotting data and performing other tasks are provided under the website's Infrastructure section and the menu selection for software leads to useful codes.

409

RF Systems in a Neutrino Factory  

SciTech Connect

Based on existing sources, I compile parameters for the RF systems for a neutrino factory which accelerates to 10 GeV.

Berg J. S.

2012-09-07T23:59:59.000Z

410

Low energy atmospheric muon neutrinos in MACRO  

E-Print Network (OSTI)

The flux of low energy neutrinos (~ 4 GeV) has been studied with the MACRO detector at Gran Sasso via the detection of muon neutrinos interactions inside the apparatus, and of upward-going stopping muons. Data collected in ~3 y with the full apparatus were analyzed. The results are compatible with a deficit of the flux of atmospheric muon neutrinos from below, and no reduction from above, with respect to Monte Carlo predictions. The deficit and the angular distributions are interpreted in terms of neutrino oscillations, and compared with the MACRO results on the upward throughgoing muons (~ 100 GeV).

M. Spurio; for the MACRO Collaboration

1998-08-01T23:59:59.000Z

411

Scintillator yields glimpse of elusive solar neutrinos  

SciTech Connect

The low-energy neutrinos are byproducts of the first reaction in a chain that generates 99% of the Suns energy.

Smart, Ashley G.

2014-11-01T23:59:59.000Z

412

Solar neutrino with Borexino: results and perspectives  

E-Print Network (OSTI)

Borexino is a unique detector able to perform measurement of solar neutrinos fluxes in the energy region around 1 MeV or below due to its low level of radioactive background. It was constructed at the LNGS underground laboratory with a goal of solar $^{7}$Be neutrino flux measurement with 5\\% precision. The goal has been successfully achieved marking the end of the first stage of the experiment. A number of other important measurements of solar neutrino fluxes have been performed during the first stage. Recently the collaboration conducted successful liquid scintillator repurification campaign aiming to reduce main contaminants in the sub-MeV energy range. With the new levels of radiopurity Borexino can improve existing and challenge a number of new measurements including: improvement of the results on the Solar and terrestrial neutrino fluxes measurements; measurement of pp and CNO solar neutrino fluxes; search for non-standard interactions of neutrino; study of the neutrino oscillations on the short baseline with an artificial neutrino source (search for sterile neutrino) in context of SOX project.

O. Smirnov; G. Bellini; J. Benziger; D. Bick; G. Bonfini; D. Bravo; B. Caccianiga; F. Calaprice; A. Caminata; P. Cavalcante; A. Chavarria; A. Chepurnov; D. D'Angelo; S. Davini; A. Derbin; A. Empl; A. Etenko; K. Fomenko; D. Franco; G. Fiorentini; C. Galbiati; S. Gazzana; C. Ghiano; M. Giammarchi; M. Goeger-Neff; A. Goretti; C. Hagner; E. Hungerford; Aldo Ianni; Andrea Ianni; V. Kobychev; D. Korablev; G. Korga; D. Kryn; M. Laubenstein; B. Lehnert; T. Lewke; E. Litvinovich; F. Lombardi; P. Lombardi; L. Ludhova; G. Lukyanchenko; I. Machulin; S. Manecki; W. Maneschg; F. Mantovani; S. Marcocci; Q. Meindl; E. Meroni; M. Meyer; L. Miramonti; M. Misiaszek; P. Mosteiro; V. Muratova; L. Oberauer; M. Obolensky; F. Ortica; K. Otis; M. Pallavicini; L. Papp; L. Perasso; A. Pocar; G. Ranucci; A. Razeto; A. Re; B. Ricci; A. Romani; N. Rossi; R. Saldanha; C. Salvo; S. Schoenert; H. Simgen; M. Skorokhvatov; A. Sotnikov; S. Sukhotin; Y. Suvorov; R. Tartaglia; G. Testera; D. Vignaud; R. B. Vogelaar; F. von Feilitzsch; H. Wang; J. Winter; M. Wojcik; A. Wright; M. Wurm; O. Zaimidoroga; S. Zavatarelli; K. Zuber; G. Zuzel

2014-10-03T23:59:59.000Z

413

BooNE: Booster Neutrino Experiment  

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

Adventure An interactive tour of quarks, neutrinos, anti-matter, extra dimensions, dark matter, accelerators, and particle detectors. Developed by the Particle Data Group....

414

Gamma Ray Burst Neutrinos Probing Quantum Gravity  

E-Print Network (OSTI)

Very high energy, short wavelength, neutrinos may interact with the space-time foam predicted by theories of quantum gravity. They would propagate like light through a crystal lattice and be delayed, with the delay depending on the energy. This will appear to the observer as a violation of Lorenz invariance. Back of the envelope calculations imply that observations of neutrinos produced by gamma ray bursts may reach Planck-scale sensitivity. We revisit the problem considering two essential complications: the imprecise timing of the neutrinos associated with their poorly understood production mechanism in the source and the indirect nature of their energy measurement made by high energy neutrino telescopes.

M. C. Gonzalez-Garcia; F. Halzen

2006-11-28T23:59:59.000Z

415

Energy Neutrinos Ever Lisa Gerhardt, LBNL  

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

objects CR P. Gorham Distance to AGNs 4 (A Few) Neutrino Sources CRs: atm Gamma Ray Bursts Dark Matter Supernovae Active Galactic Nuclei GZK p + CMB ...

416

Neutrinoless Double Beta Decay with Composite Neutrinos.  

E-Print Network (OSTI)

We study in detail the contribution of heavy composite Majorana neutrinos to neutrino-less double beta decay (0???). Our analysis confirms the result of a previous estimate by two of the authors. Excited neutrinos couple to the electroweak gauge bosons through a magnetic type effective Lagrangian. The relevant nuclear matrix element is related to matrix elements available in the literature and current bounds on the half-life of 0??? are converted into bounds on the compositeness scale and/or the heavy neutrino mass. Our bounds are of the same order of magnitude as those available from accelerator experiments.

O. Panella (a; C. Carimalo (b; Y. N. Srivastava (a; A. Widom (c

1997-01-01T23:59:59.000Z

417

Non-standard Neutrino Oscillations at Icecube  

E-Print Network (OSTI)

In this talk I review the potential of Icecube for revealing physics beyond the standard model in the oscillation of atmospheric neutrinos.

M. C. Gonzalez-Garcia

2006-12-19T23:59:59.000Z

418

Testing nuclear models via neutrino scattering  

E-Print Network (OSTI)

Recent progresses on the relativistic modeling of neutrino-nucleus reactions are presented and the results are compared with high precision experimental data in a wide energy range.

Barbaro, M B; Amaro, J E; Antonov, A N; Caballero, J A; Donnelly, T W; Gonzalez-Jimenez, R; Ivanov, M V; de Guerra, E Moya; Megias, G D; Simo, I Ruiz; Udias, J M

2014-01-01T23:59:59.000Z

419

Testing nuclear models via neutrino scattering  

E-Print Network (OSTI)

Recent progresses on the relativistic modeling of neutrino-nucleus reactions are presented and the results are compared with high precision experimental data in a wide energy range.

M. B. Barbaro; C. Albertus; J. E. Amaro; A. N. Antonov; J. A. Caballero; T. W. Donnelly; R. Gonzalez-Jimenez; M. V. Ivanov; E. Moya de Guerra; G. D. Megias; I. Ruiz Simo; J. M. Udias

2014-11-21T23:59:59.000Z

420

Search for Neutrinos from the Sun  

DOE R&D Accomplishments (OSTI)

A solar neutrino detection system has been built to observe the neutrino radiation from the sun. The detector uses 3,900,000 liters of tetrachloroethylene as the neutrino capturing medium. Argon is removed from the liquid by sweeping with helium gas, and counted in a small low level proportional counter. The recovery efficiency of the system was tested with Ar{sup 36} by the isotope dilution method, and also with Ar{sup 37} produced in the liquid by fast neutrons. These tests demonstrate that Ar{sup 37} produced in the liquid by neutrino capture can be removed with a 95 percent efficiency by the procedure used.

Davis, Raymond Jr.

1968-09-00T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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.


421

Neutrino Oscillations, Neutrinoless Double Beta Decay  

Science Journals Connector (OSTI)

We review the experimental evidence for neutrino mixing and neutrino mass. Searches for possible branches into heavy neutrinos do not reveal evidence for static mixing with branching ratios larger than 10?4 to 10?6. Similarly neutrino oscillation experiments show no evidence for dynamic mixing in various oscillation channels. Stringent limits for ? e disappearance from a recent reactor experiment are presented. Results from neutrinoless double beta decay provide sensitive test for Majorana mass and right?hand couplings the present limits being 310 eV and 10?5 respectively.

F. Boehm

1982-01-01T23:59:59.000Z

422

CPT-Odd Resonances in Neutrino Oscillations  

Science Journals Connector (OSTI)

We consider the consequences for future neutrino factory experiments of small CPT-odd interactions in neutrino oscillations. The ????? and ????? survival probabilities at a baseline L=732 km can test for CPT-odd contributions at orders of magnitude better sensitivity than present neutrino sector limits. Interference between the CPT-violating interaction and CPT-even mass terms in the Lagrangian can lead to a resonant enhancement of the oscillation amplitude. For oscillations in matter, a simultaneous enhancement of both neutrino and antineutrino oscillation amplitudes is possible.

V. Barger; S. Pakvasa; T. J. Weiler; K. Whisnant

2000-12-11T23:59:59.000Z

423

PPPL scientists take key step toward solving a major astrophysical...  

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

Primary tabs View(active tab) High Resolution Press Releases PPPL scientists take key step toward solving a major astrophysical mystery By John Greenwald September 10, 2014 Tweet...

424

PPPL scientists take key step toward solving a major astrophysical...  

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

Primary tabs View(active tab) High Resolution News PPPL scientists take key step toward solving a major astrophysical mystery By John Greenwald September 10, 2014 Tweet Widget...

425

Constraining gravitational and cosmological parameters with astrophysical data  

E-Print Network (OSTI)

We use astrophysical data to shed light on fundamental physics by constraining parametrized theoretical cosmological and gravitational models. Gravitational parameters are those constants that parametrize possible departures ...

Mao, Yi, Ph. D. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

426

Neutrino physics with an intense \  

E-Print Network (OSTI)

We study some of the physics potential of an intense $1\\,\\mathrm{MCi}$ $^{51}\\mathrm{Cr}$ source combined with the {\\sc Majorana Demonstrator} enriched germanium detector array. The {\\sc Demonstrator} will consist of detectors with ultra-low radioactive backgrounds and extremely low energy thresholds of~$\\sim 400\\,\\mathrm{eV}$. We show that it can improve the current limit on the neutrino magnetic dipole moment. We briefly discuss physics applications of the charged-current reaction of the $^{51}\\mathrm{Cr} neutrino with the $^{73}\\mathrm{Ge} isotope. Finally, we argue that the rate from a realistic, intense tritium source is below the detectable limit of even a tonne-scale HPGe experiment

R. Henning

2010-11-16T23:59:59.000Z

427

E-Print Network 3.0 - astrophysical s170 factor Sample Search...  

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

s170 factor Page: << < 1 2 3 4 5 > >> 1 Laboratory Astrophysics and the State of Astronomy and Astrophysics Submitted by the Summary: Laboratory Astrophysics and the State of...

428

Environmental Energy Technologies Division News  

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

4: 4: Vol. 5, No. 4 Cool Colors Project: Improved Materials for Cooler Roofs BVAMP: Simplifying Assessment of Building Vulnerability NARAC Expands its Reach: Minimize Chemical-Biological Weapons Casualties How to Buy Green Power New Federal Efficiency Standards for Residential Furnaces and Boilers: EETD Researchers Estimate Potential Impacts Research Highlights Sources and Credits PDF of EETD News Cool Colors Project: Improved Materials for Cooler Roofs Drawing of a house with a cool roof Roofs and the rainbow of colors used in roofing materials are getting cooler and cooler, thanks to research by scientists in the Lawrence Berkeley National Laboratory (Berkeley Lab) Environmental Energy Technologies Division (EETD). The cooler roofs get, the more energy and money they save. A new research program in cool materials is developing the

429

Environmental Energy Technologies Division News  

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

0: 0: Vol. 9, No. 2 Driving Demand Bennett-Nordman IEEE Standard Nicotine and Ozone SVOW Renewables Portfolio Standard Report Kerosene Lamp Particulate Study Research Highlights Sources and Credits PDF of EETD News Homeowner Motivations for Energy Efficiency Improvements Driving Demand report cover Hundreds of millions of dollars in public money are supporting home energy efficiency improvements. Researchers at the Lawrence Berkeley National Laboratory's (Berkeley Lab) Environmental Energy Technologies Division (EETD) are helping to ensure that these funds have their maximum impact with a new report that examines what motivates homeowners to seek out home energy improvements. "Convincing millions of Americans to divert their time and resources into upgrading their homes to eliminate energy waste, avoid high utility bills,

430

Environmental Energy Technologies Division News  

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

rogress in understanding contaminant concentrations observed in remote locations requires the development of a computer simulation model that can link these con- centrations with long-range transport potential at a continental scale. Researchers at Trent University's Canadian Environmen- tal Modeling Center and Berkeley Lab's Environmental Energy Technologies Division are now developing such a model, the Berkeley-Trent North American contaminant fate model (BETR North America). BETR is a regionally segmented multi-compartment, continen- tal-scale, mass balance chemical fate model. The model's frame- work links contaminant fate models of individual regions that encompass a larger, spatially heterogeneous area. It models North America's environment as a group of 24 ecological regions with

431

Awards: Nuclear Engineering Division (Argonne)  

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

Awards Awards Director's Welcome Organization Achievements Awards Patents Professional Societies Highlights Fact Sheets, Brochures & Other Documents Multimedia Library About Nuclear Energy Nuclear Reactors Designed by Argonne Argonne's Nuclear Science and Technology Legacy Opportunities within NE Division Visit Argonne Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Celebrating the 70th Anniversary of Chicago Pile 1 (CP-1) Argonne OutLoud on Nuclear Energy Argonne Energy Showcase 2012 Awards Bookmark and Share Printable Awards List (252 KB) NE employees received several honors and awards for their contributions to scientific research. Below is a list of awards from 1980 until today. The list is also available in PDF format.

432

Environmental Energy Technologies Division News  

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

Research Highlights Research Highlights Research Highlights Berkeley Lab Researchers Share in 2013 Supercomputing Award International Supercomputing Conference In June, at the International Scientific Computing Conference in Leipzig, Germany, the German Gauss Center for Supercomputing bestowed its 2013 Gauss Award to a paper titled "TUE, A New Energy-Efficiency Metric Applied at ORNL's Jaguar." Authors of the paper included Environmental Energy Technologies Division researchers William Tschudi and Henry Coles, along with other Members of the Energy Efficient High Performance Computing Working Group (EE HPC WG): Michael K. Patterson (Intel), Stephen W. Poole, Chung-Hsing Hsu, and Don Maxwell (Oak Ridge National Laboratory), David J. Martinez (Sandia National Laboratories), and Natalie Bates (EE HPC WG). The

433

Ramesh Gupta | Superconducting Magnet Division  

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

Ramesh Gupta Ramesh Gupta Ramesh Gupta has always been a leader in the world of superconducting magnets, which are essential to great modern accelerators such as the Relativistic Heavy Ion Collider at BNL, and the Large Hadron Collider at CERN, Switzerland. For the past decade, Lab researchers have been exploring the use of new materials that become superconducting at higher temperatures. Gupta, head of the High Temperature Superconductor (HTS) Research and Development Group in the Superconducting Magnet Division, is among those exploring avenues for HTS magnets that are energy efficient and have magnetic fields that are a million times stronger than the Earth's. These new magnets could revolutionize use in future accelerators, play a key role in energy efficiency and storage, and make possible new

434

Argonne Physics Division - Theory Group  

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

Special Day & Time: Special Day & Time: 10:30am Tues. 19 March 2013 Alessandro Lovato Argonne Leadership Computing Facility and Physics Division lovato@anl.gov Weak Response of Cold Symmetric Nuclear Matter at Three-Body Cluster Level 24 January 2013 Elmar Biernat Universidade Técnica de Lisboa, Portugal elmar.biernat@ist.utl.pt Meson properties from two different covariant approaches Special Day: Tues. 22 January 2013 Guillaume Hupin Lawrence Livermore National Lab hupin1@llnl.gov Continuum effects in nuclear structure and reactions Special Day & Time: 10:30am, Tues. 15 January 2013 Kyle Wendt Ohio State University wendt.31@osu.edu Non-Locality in the Similarity Renormalization Group Special Time: 10:30am 10 January 2013 Vojtech Krejcirik University of Maryland vkrejcir@umd.edu

435

RHIC Project | Superconducting Magnet Division  

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

RHIC Project RHIC Project The Superconducting Magnet Division supplied 1740 magnetic elements, in 888 cryostats, for the RHIC facility at BNL. Of these, 780 magnetic elements were manufactured by Northrop-Grumman (Bethpage, NY) and 360 were made by Everson Electric (Bethlehem, PA). The magnets made in industry used designs developed at BNL. The first cooldown of the magnets for the RHIC engineering run was in 1999. Since then, the magnets have operated very reliably. arc dipole coil and yoke Arc dipole coil and yoke, with magnetic flux lines The magnets provide modest field (3.45 Teslas in the arc dipoles) in a cost-effective design. Key features in the principal bending and focusing magnets include the use of NbTi Rutherford cable, a single-layer coil, and cold iron as both yoke and collar. The magnets operate in forced-flow

436

Environmental Energy Technologies Division News  

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

new three-year public-private research initiative, which new three-year public-private research initiative, which will target substantial reductions in the $100 billion spent annually in energy costs for commercial buildings, has been launched under the leadership of Environmental Energy Technologies Division scientists. More than $13 million in research funding has been pledged by the California Energy Com- mission (CEC), the DOE, private sector partners, and Pacific Gas & Electric. EETD has assembled a team of 14 public and private sector partners to carry out the varied tasks within the High-Per- formance Commercial Buildings Systems Program. The program will develop new information technologies to design, commission, and operate buildings, and integrated design techniques to generate substantial and sustained energy savings

437

Environmental Energy Technologies Division News  

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

2001: 2001: Vol. 2, No. 4 The California Energy Crisis: A Brief Summary of Events The California Energy Crisis: Long-and Short-Term Solutions High-Performance Commercial Building Systems Supporting the Cool Roofs Standard Meteorology, Energy, and Air Quality High-Performance Fume Hood Reduces Energy Use 50% The New Berkeley Lamp Lights the Way to Energy Savings Two Web Sites Help Californians Save Energy Research Highlights Sources and Credits PDF of EETD News The California Energy Crisis: A Brief Summary of Events Editor's Note: This special issue of EETD News examines the California energy crisis of 2001, and research and development underway at the Environmental Energy Technologies Division of Lawrence Berkeley National Laboratory focused on helping to solve the crisis, both in the short and

438

Environmental Energy Technologies Division News  

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

ecent concern about the risks to human ecent concern about the risks to human health from airborne particulates such as those in diesel exhaust has motivated a group at the Environmental Energy Technologies Division to investigate the use of scattered polar- ized light. The goals are to characterize these particles and develop an instrument to measure these characteristics in real time. Having such an instrument can help regulatory authorities devel- op standards and monitor air quality. Airborne particulates, especially those less than 2.5 micrometers (µm) in diameter, are known to be a major human health risk. Diesel exhaust particles are principally in this size range; they are also a major source of reduced visibility in populated areas. California recently declared particulates in diesel exhaust a haz-

439

Environmental Energy Technologies Division News  

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

A Q&A with Cindy Regnier, Manager of the Facility for Low-Energy A Q&A with Cindy Regnier, Manager of the Facility for Low-Energy eXperiments in Buildings (FLEXLAB) The Facility for Low-Energy eXperiments in Buildings (FLEXLAB) is designed to be a national focal point for developing, simulating, and testing energy-efficient technologies and strategies for buildings. FLEXLAB users will conduct research and develop technologies at FLEXLAB on single components as well as whole-building integrated design and operation. This research is aimed at substantially lowering the energy use, and improving the comfort and performance, of both new and existing buildings. FLEXLAB is a facility of Lawrence Berkeley National Laboratory's Environmental Energy Technologies Division (EETD). Artist's conception of a portion of the FLEXLAB facility

440

Environmental Energy Technologies Division News  

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

Data Center Energy Use: Truth versus Myth Data Center Energy Use: Truth versus Myth At the height of the electricity crisis of 2001, Californians were greeted over their morning coffee with headlines like: Digital Economy's Demand for Steady Power Strains Utilities Data Servers Crave Power: High-Tech Electricity Needs Amplify Crisis and Net Blamed as Crisis Roils California. One of the biggest misconceptions about the crisis was that the energy use of computers and other internet-related hardware played a significant role. But early in 2001, research by Jon Koomey of Berkeley Lab's Environmental Energy Technologies Division (EETD) showed that widely discussed estimates of the energy use of computer- and networking-related hardware were exaggerated. Koomey is leader of EETD's End-Use Energy Forecasting Group.

Note: This page contains sample records for the topic "neutrino astrophysics division" 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.


441

Environmental Energy Technologies Division News  

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

5: 5: Vol. 6, No. 2 Electricity Prices and the Tariff Analysis Project (TAP) Reducing Developing World's Polluting Fuel-Based Lighting United Nations World Environment Day June 1-5, 2005 First Energy-Efficient, LED-Based Task Lamp Brought to Market BEST Winery Tool Helps Reduce Energy and Water Costs Energy-saving Paper Sensor Passes Major Milestone Technology Transfer Research Highlights Sources and Credits PDF of EETD News TAP logo Electricity Prices and the Tariff Analysis Project (TAP) Much of the work done in the Environmental Energy Technologies Division (EETD) at Lawrence Berkeley National Laboratory (Berkeley Lab) involves analyzing the costs and benefits of energy-saving technologies and energy-efficiency measures. For the consumer, who pays to implement these

442

Environmental Energy Technologies Division News  

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

Data Center Energy Efficiency Project Wins Best of California Award Data Center Energy Efficiency Project Wins Best of California Award A project to improve the energy efficiency of the State of California Franchise Tax Board's data center has won a "Best of California" Award from the Center for Digital Government. Geoffrey Bell, Energy Engineer at Lawrence Berkeley National Laboratory's Environmental Energy Technologies Division, led the project team. Two men standing in a data center. The research was funded by the California Energy Commission's Public Interest Energy Research (PIER) program, and other participants included Federspiel Controls, Inc., Emerson Network Power, and California's Department of General Services. The Franchise Tax Board (FTB) is the California agency responsible for collecting state taxes. Its 10,000-square-foot data center in Sacramento

443

Environmental Energy Technologies Division News  

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

Study Finds No Evidence of Residential Property Value Impacts Study Finds No Evidence of Residential Property Value Impacts Near U.S. Wind Turbines Lawrence Berkeley National Laboratory (Berkeley Lab) analyzed more than 50,000 home sales near 67 wind facilities in 27 counties across nine U.S. states, yet was unable to uncover any impacts to nearby home property values. "This is the second of two major studies we have conducted on this topic [the first was published in 2009-see below], and in both studies [using two different datasets] we find no statistical evidence that operating wind turbines have had any measureable impact on home sales prices," says Ben Hoen, the lead author of the new report. Hoen is a researcher in the Environmental Energy Technologies Division of Berkeley Lab. The new study used a number of sophisticated techniques to control for

444

Environmental Energy Technologies Division News  

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

2: 2: Vol. 3, No. 4 California Consumers Kept the Lights On Quick and Easy Web-Based Assessment Tool for Day/Electric Lighting Berkeley Lab Model Tracks Indoor Anthrax Dispersal Rating "Green" Laboratories-Labs21 Environmental Performance Criteria Research Highlights Sources and Credits PDF of EETD News California Consumers Kept the Lights On California consumers-not mild weather or the cooling economy-should get credit for avoiding blackouts and keeping the lights on in summer 2001 by embracing energy efficiency and conservation and reducing their peak demand by 3,000 to 5,500 megawatts (MW), according to research by scientists at the Environmental Energy Technologies Division. This is the conclusion reached in a new analysis of the consumer response

445

Laboratory I | Nuclear Physics Division  

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

CERN 73-11 CERN 73-11 Laboratory I | Nuclear Physics Division a 24 September 1973 ORGANISATION EUROPEENNE POUR LA RECHERCHE NUCLEAIRE C E R N EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH HIGH-ACCURACY MEASUREMENTS OF THE CENTRE OF GRAVITY OF AVALANCHES IN PROPORTIONAL CHAMBERS G. Charpak, A. Jeavons, F. Sauli and R. Stubbs G E N E V A 1973 © Copyright CERN, Geneve, 1973 Propriety litteraire et scientiflque reservee pour tous les pays du monde Ce document ne peut etre reproduit ou traduit en tout ou en partie sans Tautonsation 6cnte du Directeur g6n6ral du CERN, titulaire du droit d'auteur. Dans les cas appropnes, et s'll s'agit d'utiliser le document a des fins non commerciales, cette autonsation sera volontiers accorded. Le CERN ne revendique pas la propnete des

446

Environmental Energy Technologies Division News  

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

1 Energy-Efficient Direct- Current Powering Technology 3 Laser Ultrasonic Sensor Wins R&D 100 5 Silver Anomalies in Jerusalem Pottery 7 GSA's Cool Coup at the Philadelphia Custom House 9 Tech Transfer Column 11 Research Highlights 12 Darfur Stoves Effort in PrRgress In this Issue In this Issue Researchers in the Lawrence Berkeley National Laboratory (Berkeley Lab) Environmental Energy Technologies Division (EETD) have teamed with Silicon Valley giants, including Sun Microsystems, Intel, and Cisco, to demonstrate technologies that could save billions of dollars a year in data center energy costs as well as improve data center reliability and lengthen equipment life. The demonstration took place this summer at a test facility at Sun Microsystems

447

Neutrino Factory Mercury Flow Loop  

E-Print Network (OSTI)

Neutrino Factory Mercury Flow Loop V. GravesV. Graves C. Caldwell IDS-NF Videoconference March 9, 2010 #12;Flow Loop Review · 1 cm dia nozzle, 20 m/s jet requires 1.57 liter/sec mercury flow (94 2 liter/min 24 9 gpm)mercury flow (94.2 liter/min, 24.9 gpm). · MERIT experiment showed that a pump

McDonald, Kirk

448

Graphene, neutrino mass and oscillation  

E-Print Network (OSTI)

A resolution of the Abraham-Minkowski dilemma is presented that other constant velocities can play the role of c in the theory of relativity. For example, in 2005 electrons of graphene were discovered to behave as if the coefficient is a Fermi velocity. Then we propose a conjecture for neutrinos to avoid the contradiction among two-component theory, negative rest mass-square and oscillation.

Z. Y. Wang

2009-09-10T23:59:59.000Z

449

Non-standard Neutrino Interactions  

E-Print Network (OSTI)

Theories beyond the Standard Model must respect its gauge symmetry. This implies strict constraints on the possible models of Non-Standard Neutrino Interactions (NSIs). We review here the present status of NSIs from the point of view of effective field theory. Our recent work on the restrictions implied by Standard Model gauge invariance is provided along with some examples of possible gauge invariant models featuring non-standard interactions.

D. Hernandez

2009-11-25T23:59:59.000Z

450

First search for neutrinos in correlation with gamma-ray bursts with the ANTARES neutrino telescope  

SciTech Connect

A search for neutrino-induced muons in correlation with a selection of 40 gamma-ray bursts that occurred in 2007 has been performed with the ANTARES neutrino telescope. During that period, the detector consisted of 5 detection lines. The ANTARES neutrino telescope is sensitive to TeVPeV neutrinos that are predicted from gamma-ray bursts. No events were found in correlation with the prompt photon emission of the gamma-ray bursts and upper limits have been placed on the flux and fluence of neutrinos for different models.

NONE

2013-03-01T23:59:59.000Z

451

School of Social Sciences Division of Psychology  

E-Print Network (OSTI)

School of Social Sciences Division of Psychology Spring / Summer 2010 Welcome to the Psychological the Psychological Well-being and Mental Health (PWMH) Research Group; a collection of researchers working in the Division of Psychology at Nottingham Trent University. The newsletter will come out twice a year, in spring

Evans, Paul

452

Materials Sciences Division 1990 annual report  

SciTech Connect

This report is the Materials Sciences Division`s annual report. It contains abstracts describing materials research at the National Center for Electron Microscopy, and for research groups in metallurgy, solid-state physics, materials chemistry, electrochemical energy storage, electronic materials, surface science and catalysis, ceramic science, high tc superconductivity, polymers, composites, and high performance metals.

Not Available

1990-12-31T23:59:59.000Z

453

Hui-Hai Liu Earth Sciences Division  

E-Print Network (OSTI)

1 Hui-Hai Liu Earth Sciences Division Ernest Orlando Lawrence Berkeley National Laboratory (LBNL, Department of Hydrogeology, Earth Sciences Division, Ernest Orlando Lawrence Berkeley National Laboratory Scientist (2004-present), Ernest Orlando Lawrence Berkeley National Laboratory. #12;2 1995-1997, Research

Ajo-Franklin, Jonathan

454

Fixed Income Division Nomura International plc  

E-Print Network (OSTI)

Fixed Income Division © Nomura International plc Symmetry methods for quadratic Gaussian models International plc Outline Motivation The quadratic Gaussian distribution The quadratic Gaussian process The quadratic Gaussian model #12;Fixed Income Division 3© Nomura International plc Part 1 Motivation #12;Fixed

Macrina, Andrea

455

Computer Security Division 2009 Annual Report  

E-Print Network (OSTI)

Security 12 Smart Grid Cyber Security 13 Supply Chain Risk Management 13 Cryptographic Validation Programs Computing Project 36 Policy Machine 36 Security for Grid and Pervasive Systems 38 Security OntologiesComputer Security Division 2009 Annual Report #12;Table of Contents Welcome 1 Division

456

Table of Contents Division Organization 2  

E-Print Network (OSTI)

National Initiative for Cybersecurity Education (NICE) 12 Smart Grid Cyber Security 13 Supply Chain Risk Security and Forensics 33 NIST Cloud Computing Project 34 Policy Machine 35 Security for Grid#12;2002 Table of Contents Welcome 1 Division Organization 2 The Computer Security Division

457

West Virginia University Division of Human Resources  

E-Print Network (OSTI)

on the WVU Division of Human Resources Web page hr.wvu.edu. In the event of a conflict between the current posted version and this printed copy, the posted version on the Web page is controlling. Page 1 of 2 of this administrative procedure has been posted on the WVU Division of Human Resources Web page hr.wvu.edu. In the event

Mohaghegh, Shahab

458

West Virginia University Division of Human Resources  

E-Print Network (OSTI)

Division of Human Resources Web page hr.wvu.edu. In the event of a conflict between the current posted version and this printed copy, the posted version on the Web page is controlling. Page 1 of 2 Access been posted on the WVU Division of Human Resources Web page hr.wvu.edu. In the event of a conflict

Mohaghegh, Shahab

459

West Virginia University Division of Human Resources  

E-Print Network (OSTI)

Division of Human Resources Web page hr.wvu.edu. In the event of a conflict between the current posted version and this printed copy, the posted version on the Web page is controlling. Page 1 of 2 Employment been posted on the WVU Division of Human Resources Web page hr.wvu.edu. In the event of a conflict

Mohaghegh, Shahab

460

West Virginia University Division of Human Resources  

E-Print Network (OSTI)

on the WVU Division of Human Resources Web page hr.wvu.edu. In the event of a conflict between the current posted version and this printed copy, the posted version on the Web page is controlling. Page 1 of 2 been posted on the WVU Division of Human Resources Web page hr.wvu.edu. In the event of a conflict

Mohaghegh, Shahab

Note: This page contains sample records for the topic "neutrino astrophysics division" 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

West Virginia University Division of Human Resources  

E-Print Network (OSTI)

on the WVU Division of Human Resources Web page hr.wvu.edu. In the event of a conflict between the current posted version and this printed copy, the posted version on the Web page is controlling. Page 1 of 3 Division of Human Resources Web page hr.wvu.edu. In the event of a conflict between the current posted

Mohaghegh, Shahab

462

Nuclear Engineering Division Irradiated Materials Laboratory  

E-Print Network (OSTI)

Nuclear Engineering Division Irradiated Materials Laboratory The Irradiated Materials Laboratory (IML) in Argonne's Nuclear Engineering Division is used to conduct research on the behavior. #12;C O N TA C T > Dr. Michael C. Billone | 630-252-7146 | billone@anl.gov | Nuclear Engineering

Kemner, Ken

463

The Division of Biology & Biomedical Sciences  

E-Print Network (OSTI)

The Division of Biology & Biomedical Sciences what will you discover? #12;what will you discover and Biomedical Sciences Washington University in St. Louis dbbs.wustl.edu On the cover: Moshi Song (left of other disciplines. The Division of Biology and Biomedical Sciences is ideally positioned to foster

Stormo, Gary

464

Neutrino induced light element synthesis  

SciTech Connect

As the core of a massive star collapses to form a neutron star, the flux of neutrinos in the overlying shells of heavy elements becomes so great that, despite the small cross section, substantial nuclear transmutation is induced. Neutrinos, especially the higher energy {mu}- and {tau}-neutrinos, excite heavy elements and even helium to particle unbound levels. The evaporation of a single neutron or proton, and the back reaction of these nucleons on other species present, significantly alters the outcome of traditional nucleosynthesis calculations leading to a new process: {nu}-nucleosynthesis. The process was first studied by Domogatsky et al. and Woosley. Recent work by Epstein, Colgate, and Haxton and Woosley and Haxton suggested that a large number of elements could owe their existence in nature to {nu}-induced reactions in supernovae. A parametrized study of this process including shock wave propagation was carried out by Woosley et al. for selected zones of a 20 M{sub {circle dot}} star. Here we give preliminary results for a 25 M{sub {circle dot}} star, including all {nu}-reactions in all stellar zones.

Hartmann, D.H.; Mathews, G.; Weaver, T.A. (Lawrence Livermore National Lab., CA (USA)); Haxton, W.C. (Washington Univ., Seattle, WA (USA). Dept. of Physics); Woosley, S.E. (Lawrence Livermore National Lab., CA (USA) California Univ., Santa Cruz, CA (USA). Board of Studies in Astronomy and Astrophysics)

1990-01-01T23:59:59.000Z

465

Probing thermonuclear supernova explosions with neutrinos  

E-Print Network (OSTI)

Aims: We present neutrino light curves and energy spectra for two representative type Ia supernova explosion models: a pure deflagration and a delayed detonation. Methods: We calculate the neutrino flux from $\\beta$ processes using nuclear statistical equilibrium abundances convoluted with approximate neutrino spectra of the individual nuclei and the thermal neutrino spectrum (pair+plasma). Results: Although the two considered thermonuclear supernova explosion scenarios are expected to produce almost identical electromagnetic output, their neutrino signatures appear vastly different, which allow an unambiguous identification of the explosion mechanism: a pure deflagration produces a single peak in the neutrino light curve, while the addition of the second maximum characterizes a delayed-detonation. We identified the following main contributors to the neutrino signal: (1) weak electron neutrino emission from electron captures (in particular on the protons Co55 and Ni56) and numerous beta-active nuclei produced by the thermonuclear flame and/or detonation front, (2) electron antineutrinos from positron captures on neutrons, and (3) the thermal emission from pair annihilation. We estimate that a pure deflagration supernova explosion at a distance of 1 kpc would trigger about 14 events in the future 50 kt liquid scintillator detector and some 19 events in a 0.5 Mt water Cherenkov-type detector. Conclusions: While in contrast to core-collapse supernovae neutrinos carry only a very small fraction of the energy produced in the thermonuclear supernova explosion, the SN Ia neutrino signal provides information that allows us to unambiguously distinguish between different possible explosion scenarios. These studies will become feasible with the next generation of proposed neutrino observatories.

A. Odrzywolek; T. Plewa

2011-03-27T23:59:59.000Z

466

Confusing the extragalactic neutrino flux limit with a neutrino propagation limit  

SciTech Connect

We study the possible suppression of the extragalactic neutrino flux due to a nonstandard interaction during its propagation. In particular, we study neutrino interaction with an ultra-light scalar field dark matter. It is shown that the extragalactic neutrino flux may be suppressed by such an interaction, leading to a new mechanism to reduce the ultra-high energy neutrino flux. We study both the cases of non-self-conjugate as well as self-conjugate dark matter. In the first case, the suppression is independent of the neutrino and dark matter masses. We conclude that care must be taken when explaining limits on the neutrino flux through source acceleration mechanisms only, since there could be other mechanisms for the reduction of the neutrino flux.

Barranco, Juan [Instituto de Astronoma, Universidad Nacional Autonoma de Mxico, Mexico, DF 04510 (Mexico); Miranda, Omar G. [Departamento de Fsica, Centro de Investigacin y de Estudios Avanzados del IPN, Apdo. Postal 14-740 07000 Mxico, D.F. (Mexico); Moura, Celio A. [Centro de Cincias Naturais e Humanas, Universidade Federal do ABC, Rua Santa Adlia, 166, 09210-170 Santo Andr, SP (Brazil); Rashba, Timur I. [Max-Planck-Institute for Solar System Research, Katlenburg-Lindau, 37191 (Germany); Rossi-Torres, Fernando, E-mail: barranco@astroscu.unam.mx, E-mail: Omar.Miranda@fis.cinvestav.mx, E-mail: celio.moura@ufabc.edu.br, E-mail: timur@mppmu.mpg.de, E-mail: ftorres@ifi.unicamp.br [Instituto de Fsica Terica, Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271 - Bl. II, 01140-070, So Paulo, SP (Brazil)

2011-10-01T23:59:59.000Z

467

E-Print Network 3.0 - astrophysics research program Sample Search...  

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

research program Page: << < 1 2 3 4 5 > >> 1 Laboratory Astrophysics and the State of Astronomy and Astrophysics Submitted by the Summary: . A number of programs that previously...

468

E-Print Network 3.0 - astrophysical applications ii Sample Search...  

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

II & Part III in Astrophysics 2011 -2012 Undergraduate Courses at the Institute of Astronomy, University of Cambridge Summary: Part II & Part III in Astrophysics 2011 - 2012...

469

E-Print Network 3.0 - astrophysical objects vzaimodejstvie Sample...  

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

vzaimodejstvie Page: << < 1 2 3 4 5 > >> 1 Laboratory Astrophysics and the State of Astronomy and Astrophysics Submitted by the Summary: visible diagnostics for probing...

470

E-Print Network 3.0 - astrophysics technical progress Sample...  

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

progress Page: << < 1 2 3 4 5 > >> 1 Laboratory Astrophysics and the State of Astronomy and Astrophysics Submitted by the Summary: facilities, detectorinstrument...

471

E-Print Network 3.0 - astrophysical accretion flows Sample Search...  

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

Sample search results for: astrophysical accretion flows Page: << < 1 2 3 4 5 > >> 1 Astronomy 202: Astrophysical Gas Dynamics LL Fluid Mechanics by Landau & Lifshitz Summary:...

472

E-Print Network 3.0 - astrophysical black holes Sample Search...  

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

PDF DIR ASTROPHYSICS Summary: dwarfs, neutron stars, black holes - supernovae - gamma-ray bursts stellar evolution versus galaxy... TALK DIR PDF DIR MASTER ASTROPHYSICS ...

473

E-Print Network 3.0 - astrophysical scenarios pushing Sample...  

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

the 17O(,)21Ne... reaction DRAGON Preliminary results Upcoming measurement 12;3 Nuclear Astrophysics... Nuclear Astrophysics -- What? Why?What? Why? http:ie.lbl.gov...

474

E-Print Network 3.0 - astrophysical gyrokinetics kinetic Sample...  

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

and Astrophysical Plasmas - 2010, Cambridge, UK Turbulence... fluorescence Exploits Neutral Beam Heating Systems 12;G. McKee - Gyrokinetics in Laboratory and Astrophysical......

475

E-Print Network 3.0 - astrophysical energy region Sample Search...  

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

Radiation Field Summary: absorb- ing) region I 0( ) Free space I Ray s 0 s s1 Emergent intensity High Energy Astrophysics... High Energy Astrophysics: Radiation Field 36111...

476

E-Print Network 3.0 - astrophysical nuclear reactions Sample...  

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

Physics 2 Nuclear data for astrophysics Michael S. Smitha Summary: to determine thermonuclear reaction rates and Q-values to determine releases of nuclear energy. Astrophysical...

477

E-Print Network 3.0 - astrophysics hydrodynamical flows Sample...  

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

on astrophysical jets P. M. Bellan Summary: shock driven by an out- flow from a young, low mass star. Purely hydrodynamic models in which... Miniconference on astrophysical...

478

Chemical and Laser Sciences Division annual report 1989  

SciTech Connect

The Chemical and Laser Sciences Division Annual Report includes articles describing representative research and development activities within the Division, as well as major programs to which the Division makes significant contributions.

Haines, N. (ed.)

1990-06-01T23:59:59.000Z

479

MODULES FOR EXPERIMENTS IN STELLAR ASTROPHYSICS (MESA)  

SciTech Connect

Stellar physics and evolution calculations enable a broad range of research in astrophysics. Modules for Experiments in Stellar Astrophysics (MESA) is a suite of open source, robust, efficient, thread-safe libraries for a wide range of applications in computational stellar astrophysics. A one-dimensional stellar evolution module, MESAstar, combines many of the numerical and physics modules for simulations of a wide range of stellar evolution scenarios ranging from very low mass to massive stars, including advanced evolutionary phases. MESAstar solves the fully coupled structure and composition equations simultaneously. It uses adaptive mesh refinement and sophisticated timestep controls, and supports shared memory parallelism based on OpenMP. State-of-the-art modules provide equation of state, opacity, nuclear reaction rates, element diffusion data, and atmosphere boundary conditions. Each module is constructed as a separate Fortran 95 library with its own explicitly defined public interface to facilitate independent development. Several detailed examples indicate the extensive verification and testing that is continuously performed and demonstrate the wide range of capabilities that MESA possesses. These examples include evolutionary tracks of very low mass stars, brown dwarfs, and gas giant planets to very old ages; the complete evolutionary track of a 1 M {sub sun} star from the pre-main sequence (PMS) to a cooling white dwarf; the solar sound speed profile; the evolution of intermediate-mass stars through the He-core burning phase and thermal pulses on the He-shell burning asymptotic giant branch phase; the interior structure of slowly pulsating B Stars and Beta Cepheids; the complete evolutionary tracks of massive stars from the PMS to the onset of core collapse; mass transfer from stars undergoing Roche lobe overflow; and the evolution of helium accretion onto a neutron star. MESA can be downloaded from the project Web site (http://mesa.sourceforge.net/).

Paxton, Bill; Bildsten, Lars [Kavli Institute for Theoretical Physics and Department of Physics, Kohn Hall, University of California, Santa Barbara, CA 93106 (United States); Dotter, Aaron; Herwig, Falk [Department of Physics and Astronomy, University of Victoria, P.O. Box 3055, STN CSC, Victoria, BC V8W 3P6 (Canada); Lesaffre, Pierre [LERMA-LRA, CNRS UMR8112, Observatoire de Paris and Ecole Normale Superieure, 24 Rue Lhomond, 75231 Paris Cedex 05 (France); Timmes, Frank [School of Earth and Space Exploration, Arizona State University, P.O. Box 871404, Tempe, AZ 85287-1404 (United States)

2011-01-15T23:59:59.000Z

480

Astrophysical Bounds on Planck Suppressed Lorentz Violation  

E-Print Network (OSTI)

This article reviews many of the observational constraints on Lorentz symmetry violation (LV). We first describe the GZK cutoff and other phenomena that are sensitive to LV. After a brief historical sketch of research on LV, we discuss the effective field theory description of LV and related questions of principle, technical results, and observational constraints. We focus on constraints from high energy astrophysics on mass dimension five operators that contribute to LV electron and photon dispersion relations at order E/M_Planck. We also briefly discuss constraints on renormalizable operators, and review the current and future contraints on LV at order (E/M_Planck)^2.

Ted Jacobson; Stefano Liberati; David Mattingly

2004-07-30T23:59:59.000Z

Note: This page contains sample records for the topic "neutrino astrophysics division" 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.


481

Jack Steinberger and the Muon-Neutrino  

Office of Scientific and Technical Information (OSTI)

Jack Steinberger and the Muon-Neutrino Resources with Additional Information Jack Steinberger Photograph by Harry Sticker, courtesy AIP Emilio Segre Visual Archives, Physics Today Collection In an interview, Jack Steinberger spoke about his 1988 Nobel Prize winning research. He states "I did an experiment, together with several other people at Brookhaven National Laboratory ... which showed that there is a second kind of neutrino. The neutrino has elementary particles. Elementary particles exist in families of particles ... . At the time, the elementary particles which were involved were the electrons and the neutrino. ... [W]e required the [BNL] accelerator, which was the effort of very many people, ... and this allowed [us] to make a beam of these neutrinos, and we were able to convince ourselves that these neutrinos were not the same kind of neutrinos as those which had been seen before. They were associated with not electrons, but with something called [muons]. So we were able to understand that there is a different neutrino associated with the [muon] than with the electron.

482

Coherent neutrino scattering in dark matter detectors  

Science Journals Connector (OSTI)

Coherent elastic neutrino-nucleus and weakly interacting massive particle-nucleus interaction signatures are expected to be quite similar. This paper discusses how a next-generation ton-scale dark matter detector could discover neutrino-nucleus coherent scattering, a precisely-predicted standard model process. A high-intensity pion- and muon- decay-at-rest neutrino source recently proposed for oscillation physics at underground laboratories would provide the neutrinos for these measurements. In this paper, we calculate raw rates for various target materials commonly used in dark matter detectors and show that discovery of this interaction is possible with a 2??tonyear GEODM exposure in an optimistic energy threshold and efficiency scenario. We also study the effects of the neutrino source on weakly interacting massive particle sensitivity and discuss the modulated neutrino signal as a sensitivity/consistency check between different dark matter experiments at the Deep Underground Science and Engineering Laboratory. Furthermore, we consider the possibility of coherent neutrino physics with a GEODM module placed within tens of meters of the neutrino source.

A. J. Anderson; J. M. Conrad; E. Figueroa-Feliciano; K. Scholberg; J. Spitz

2011-07-15T23:59:59.000Z

483

CP violation in neutrinophoton scattering  

Science Journals Connector (OSTI)

It is shown that effects of CP violation arise in neutrinophoton scattering. Several CP-violating ?? reactions are considered within the Standard Model and predictions for some observables are made. It is emphasized that neutrinophoton scattering may provide an experimental tool for testing the scale dependence of CP violation.

I Alikhanov

2014-01-01T23:59:59.000Z

484

Neutrino SuperBeams at Fermilab  

SciTech Connect

In this talk I will give a brief description of long baseline neutrino physics, the LBNE experiment and Project X at Fermilab. A brief outline of the physics of long baseline neutrino experiments, LBNE and Project X at Fermilab is given in this talk.

Parke, Stephen J.; /Fermilab

2011-08-23T23:59:59.000Z

485

Neutrino proton scattering and the isosinglet term  

SciTech Connect

Elastic neutrino proton scattering is sensitive to the SU(3) axial isosinglet term which is in turn dependent on the strangeness content of the proton. The uncertainties in the analysis of a neutrino proton elastic scattering experiment are discussed, and an experiment which is insensitive to many of the difficulties of the previous experiment is described.

White, D.H.

1990-01-01T23:59:59.000Z

486

Neutrino Balls and Gamma-Ray Bursts  

E-Print Network (OSTI)

We propose a mechanism by which the neutrino emission from a supernova-type explosion can be converted into a gamma-ray burst of total energy $\\sim 10^{50}$ ergs. This occurs naturally if the explosion is situated inside a ball of trapped neutrinos, which in turn may lie at a galactic core. There are possible unique signatures of this scenario.

B. Holdom; R. A. Malaney

1993-06-17T23:59:59.000Z

487

Variations in the Solar Neutrino Flux  

DOE R&D Accomplishments (OSTI)

Observations are reported from the chlorine solar neutrino detector in the Homestake Gold Mine, South Dakota, USA. They extend from 1970 to 1985 and yield an average neutrino capture rate of 2.1 +- 0.3 SNU. The results from 1977 to 1985 show an anti-correlation with the solar activity cycle, and an apparent increased rate during large solar flares.

Davis, R. Jr.; Cleveland, B. T.; Rowley, J. K.

1987-08-02T23:59:59.000Z

488

Review Paper. Neutrino masses, mixing and oscillations  

Science Journals Connector (OSTI)

...experiments on the search for neutrinoless...experiments on the search for neutrinoless...If neutrino fields enter only in the SM Lagrangians...is a neutrino mass term, which does not...i) Dirac mass term LD = - R MD L + h...Sterile fields do not enter into the standard...

2004-01-01T23:59:59.000Z

489

Dark energy, cosmological constant and neutrino mixing  

E-Print Network (OSTI)

The today estimated value of dark energy can be achieved by the vacuum condensate induced by neutrino mixing phenomenon. Such a tiny value is recovered for a cut-off of the order of Planck scale and it is linked to the sub eV neutrino mass scale. Contributions to dark energy from auxiliary fields or mechanisms are not necessary in this approach.

A. Capolupo; S. Capozziello; G. Vitiello

2007-05-02T23:59:59.000Z

490

Radiative p11b capture at astrophysical energies  

E-Print Network (OSTI)

In the framework of the modified potential cluster model with forbidden states the possibility of describing the available experimental data on the total cross sections and astrophysical S-factor for p11B radiative capture to the ground state of 12C was treated at astrophysical energies.

S. B. Dubovichenko; N. A. Burkova

2014-01-18T23:59:59.000Z

491

Workshop on Thermonuclear Reaction Rates for Astrophysics Applications  

E-Print Network (OSTI)

Workshop on Thermonuclear Reaction Rates for Astrophysics Applications 24-25 November 2011, Athens circular for the Workshop on Thermonuclear Reaction Rates for Astrophysics Applications, to be held of thermonuclear reaction rates. The topics of the workshop, in relation with thermonuclear reaction rates

492

Trojan Horse particle invariance:the impact on nuclear astrophysics  

E-Print Network (OSTI)

than few hundred keV's). THM allows one to extract the low energy behavior of a binary reaction . The basic idea of the THM is to extract the cross section in the low-energy region of a two-body reaction reactions cross sections of astrophysical interest, in the energy range required by the astrophysical

Bertulani, Carlos A. - Department of Physics and Astronomy, Texas A&M University

493

Solar neutrino measurements in Super-Kamiokande-I  

E-Print Network (OSTI)

The details of Super--Kamiokande--I's solar neutrino analysis are given. Solar neutrino measurement in Super--Kamiokande is a high statistics collection of $^8$B solar neutrinos via neutrino-electron scattering. The analysis method and results of the 1496 day data sample are presented. The final oscillation results for the data are also presented.

Super-Kamiokande Collaboration

2005-09-26T23:59:59.000Z

494

Detectors for Neutrino Physics at the First Muon Collider  

E-Print Network (OSTI)

We consider possible detector designs for short-baseline neutrino experiments using neutrino beams produced at the First Muon Collider complex. The high fluxes available at the muon collider make possible high statistics deep-inelastic scattering neutrino experiments with a low-mass target. A design of a low-energy neutrino oscillation experiment on the ``tabletop'' scale is also discussed.

Deborah A. Harris; Kevin S. McFarland

1998-04-20T23:59:59.000Z

495

Double Beta Decay and the Absolute Neutrino Mass Scale  

E-Print Network (OSTI)

After a short review of the current status of three-neutrino mixing, the implications for the values of neutrino masses are discussed. The bounds on the absolute scale of neutrino masses from Tritium beta-decay and cosmological data are reviewed. Finally, we discuss the implications of three-neutrino mixing for neutrinoless double-beta decay.

Carlo Giunti

2003-08-20T23:59:59.000Z

496

E-Print Network 3.0 - approximative neutrino transport Sample...  

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

neutrino transport Page: << < 1 2 3 4 5 > >> 1 Solar Neutrinos: Solved and Unsolved Problems John N. Bahcall Summary: neutrino emission by its approximate dependence upon the...

497

The Effect of Sterile States on the Magnetic Moments of Neutrinos  

E-Print Network (OSTI)

We briefly review recent work exploring the effect of light sterile neutrino states on the neutrino magnetic moment as explored by the reactor and solar neutrino experiments.

A. B. Balantekin; N. Vassh

2014-04-04T23:59:59.000Z

498

Solar neutrinos and the solar composition problem  

E-Print Network (OSTI)

Standard solar models (SSM) are facing nowadays a new puzzle: the solar composition problem. New determinations of solar metal abundances lead SSM calculations to conflict with helioseismological measurements, showing discrepancies that extend from the convection zone to the solar core and can not be easily assigned to deficiencies in the modelling of the solar convection zone. We present updated solar neutrino fluxes and uncertainties for two SSM with high (old) and low (new) solar metallicity determinations. The uncertainties in iron and carbon abundances are the largest contribution to the uncertainties of the solar neutrino fluxes. The uncertainty on the ^14N+p -> ^15O+g rate is the largest of the non-composition uncertainties to the CNO neutrino fluxes. We propose an independent method to help identify which SSM is the correct one. Present neutrino data can not distinguish the solar neutrino predictions of both models but ongoing measurements can help to solve the puzzle.

Carlos Pena-Garay; Aldo Serenelli

2008-11-16T23:59:59.000Z

499

The Fermilab main injector neutrino program  

SciTech Connect

The NuMI Facility at Fermilab provides an extremely intense beam of neutrinos making it an ideal place for the study of neutrino oscillations as well as high statistics (anti)neutrino-nucleon/nucleus scattering experiments. The MINOS neutrino oscillation {nu}{mu} disappearance experiment is currently taking data and has published first results. The NO{nu}A {nu}e appearance experiment is planning to begin taking data at the start of the next decade. For the study of neutrino scattering, the MINER{nu}A experiment at Fermilab is a collaboration of elementary-particle and nuclear physicists planning to use a fully active fine-grained solid scintillator detector. The overall goals of the experiment are to measure absolute exclusive cross-sections, nuclear effects in {nu} - A interactions, a systematic study of the resonance-DIS transition region and the high-xBj - low Q2 DIS region.

Morfin, Jorge G.; /Fermilab

2007-01-01T23:59:59.000Z

500

Earth Sciences Division Research Summaries 2006-2007  

E-Print Network (OSTI)

the commencement of the Earth Sciences Division 30 yearstelling. Happy Anniversary! Earth Sciences Division ears YTritium in Engineered and Earth Materials Stefan Finsterle,

DePaolo, Donald

2008-01-01T23:59:59.000Z