Mass Measurements Demonstrate a Strong N = 28 Shell Gap in Argon

Meisel, Z.; George, S.; Ahn, S.; Browne, J.; Bazin, D.; Brown, B. A.; Carpino, J. F.; Chung, H.; Cyburt, R. H.; Estradé, A.; Famiano, M.; Gade, A.; Langer, C.; Matoš, M.; Mittig, W.; Montes, F.; Morrissey, D. J.; Pereira, J.; Schatz, H.; Schatz, J.; Scott, M.; Shapira, D.; Smith, K.; Stevens, J.; Tan, W.; Tarasov, O.; Towers, S.; Wimmer, K.; Winkelbauer, J. R.; Yurkon, J.; Zegers, R. G.  T.

doi:10.1103/PhysRevLett.114.022501

Title: Mass Measurements Demonstrate a Strong N = 28 Shell Gap in Argon

Abstract

We present results from recent time-of-flight nuclear mass measurements at the National Superconducting Cyclotron Laboratory at Michigan State University. We report the first mass measurements of 48Ar and 49Ar and find atomic mass excesses of -22.28(31) MeV and -17.8(1.1) MeV, respectively. These masses provide strong evidence for the closed shell nature of neutron number N = 28 in argon, which is therefore the lowest even-Z element exhibiting the N = 28 closed shell. The resulting trend in binding-energy differences, which probes the strength of the N = 28 shell, compares favorably with shell-model calculations in the sd-pf shell using SDPF-U and SDPF-MU Hamiltonians.

Authors:

Meisel, Z. ^[1]; George, S. ^[2]; Ahn, S. ^[3]; Browne, J. ^[1]; Bazin, D. ^[4]; Brown, B. A. ^[5]; Carpino, J. F. ^[6]; Chung, H. ^[6]; Cyburt, R. H. ^[3]; Estradé, A. ^[7]; Famiano, M. ^[6]; Gade, A. ^[5]; Langer, C. ^[3]; Matoš, M. ^[8]; Mittig, W. ^[5]; Montes, F. ^[3]; Morrissey, D. J. ^[9]; Pereira, J. ^[3]; Schatz, H. ^[1]; Schatz, J. ^[4] more »

Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab. and Dept. of Physics and Astronomy and Joint Inst. for Nuclear Astrophysics
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab. and Joint Inst. for Nuclear Astrophysics; Max Planck Inst. for Nuclear Physics, Heidelberg (Germany)
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab. and Joint Inst. for Nuclear Astrophysics
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab. and Dept. of Physics and Astronomy
Western Michigan Univ., Kalamazoo MI (United States). Dept. of Physics
Univ. of Edinburgh, Scotland (United Kingdom). School of Physics and Astronomy
Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Physics and Astronomy
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab. and Dept. of Chemistry
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Michigan State Univ., East Lansing, MI (United States). Joint Inst. for Nuclear Astrophysics; Univ. of Notre Dame, IN (United States). Dept. of Physics
Univ. of Notre Dame, IN (United States). Dept. of Physics

Publication Date:: Thu Jan 15 00:00:00 EST 2015

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1336577

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 114; Journal Issue: 2; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Citation Formats


                    Meisel, Z., George, S., Ahn, S., Browne, J., Bazin, D., Brown, B. A., Carpino, J. F., Chung, H., Cyburt, R. H., Estradé, A., Famiano, M., Gade, A., Langer, C., Matoš, M., Mittig, W., Montes, F., Morrissey, D. J., Pereira, J., Schatz, H., Schatz, J., Scott, M., Shapira, D., Smith, K., Stevens, J., Tan, W., Tarasov, O., Towers, S., Wimmer, K., Winkelbauer, J. R., Yurkon, J., and Zegers, R. G.  T. Mass Measurements Demonstrate a Strong N = 28 Shell Gap in Argon.  United States: N. p., 2015. 
Web.  doi:10.1103/PhysRevLett.114.022501.

Copy to clipboard


                    Meisel, Z., George, S., Ahn, S., Browne, J., Bazin, D., Brown, B. A., Carpino, J. F., Chung, H., Cyburt, R. H., Estradé, A., Famiano, M., Gade, A., Langer, C., Matoš, M., Mittig, W., Montes, F., Morrissey, D. J., Pereira, J., Schatz, H., Schatz, J., Scott, M., Shapira, D., Smith, K., Stevens, J., Tan, W., Tarasov, O., Towers, S., Wimmer, K., Winkelbauer, J. R., Yurkon, J., & Zegers, R. G.  T. Mass Measurements Demonstrate a Strong N = 28 Shell Gap in Argon.  United States.  https://doi.org/10.1103/PhysRevLett.114.022501

Copy to clipboard


                    Meisel, Z., George, S., Ahn, S., Browne, J., Bazin, D., Brown, B. A., Carpino, J. F., Chung, H., Cyburt, R. H., Estradé, A., Famiano, M., Gade, A., Langer, C., Matoš, M., Mittig, W., Montes, F., Morrissey, D. J., Pereira, J., Schatz, H., Schatz, J., Scott, M., Shapira, D., Smith, K., Stevens, J., Tan, W., Tarasov, O., Towers, S., Wimmer, K., Winkelbauer, J. R., Yurkon, J., and Zegers, R. G.  T. Thu .  
"Mass Measurements Demonstrate a Strong N = 28 Shell Gap in Argon".  United States.  https://doi.org/10.1103/PhysRevLett.114.022501.  https://www.osti.gov/servlets/purl/1336577.

Copy to clipboard


                    
@article{osti_1336577,

  title        = {Mass Measurements Demonstrate a Strong N = 28 Shell Gap in Argon},

  author       = {Meisel, Z. and George, S. and Ahn, S. and Browne, J. and Bazin, D. and Brown, B. A. and Carpino, J. F. and Chung, H. and Cyburt, R. H. and Estradé, A. and Famiano, M. and Gade, A. and Langer, C. and Matoš, M. and Mittig, W. and Montes, F. and Morrissey, D. J. and Pereira, J. and Schatz, H. and Schatz, J. and Scott, M. and Shapira, D. and Smith, K. and Stevens, J. and Tan, W. and Tarasov, O. and Towers, S. and Wimmer, K. and Winkelbauer, J. R. and Yurkon, J. and Zegers, R. G.  T.},

  abstractNote = {We present results from recent time-of-flight nuclear mass measurements at the National Superconducting Cyclotron Laboratory at Michigan State University. We report the first mass measurements of 48Ar and 49Ar and find atomic mass excesses of -22.28(31) MeV and -17.8(1.1) MeV, respectively. These masses provide strong evidence for the closed shell nature of neutron number N = 28 in argon, which is therefore the lowest even-Z element exhibiting the N = 28 closed shell. The resulting trend in binding-energy differences, which probes the strength of the N = 28 shell, compares favorably with shell-model calculations in the sd-pf shell using SDPF-U and SDPF-MU Hamiltonians.},

  doi          = {10.1103/PhysRevLett.114.022501},

  journal      = {Physical Review Letters},

  number       = 2,

  volume       = 114,

  place        = {United States},

  year         = {Thu Jan 15 00:00:00 EST 2015},

  month        = {Thu Jan 15 00:00:00 EST 2015}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1103/PhysRevLett.114.022501

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 30 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Nuclear binding and nuclear structure
journal, September 2013

Cakirli, R. B.; Casten, R. F.
International Journal of Mass Spectrometry, Vol. 349-350
DOI: 10.1016/j.ijms.2013.04.011

New Region of Deformation: The Neutron-Rich Sulfur Isotopes
journal, November 1996

Scheit, H.; Glasmacher, T.; Brown, B. A.
Physical Review Letters, Vol. 77, Issue 19
DOI: 10.1103/PhysRevLett.77.3967

Reduction of the Spin-Orbit Splittings at the $N = 28$ Shell Closure
journal, August 2006

Gaudefroy, L.; Sorlin, O.; Beaumel, D.
Physical Review Letters, Vol. 97, Issue 9
DOI: 10.1103/PhysRevLett.97.092501

Evolution of the N = 28 shell closure: a test bench for nuclear forces
journal, January 2013

Sorlin, O.; Porquet, M-G
Physica Scripta, Vol. T152
DOI: 10.1088/0031-8949/2013/T152/014003

Structure of the $N = 27$ isotones derived from the ${}^{44}{Ar}$ ( $d, p$ ) ${}^{45}{Ar}$ reaction
journal, September 2008

Gaudefroy, L.; Sorlin, O.; Nowacki, F.
Physical Review C, Vol. 78, Issue 3
DOI: 10.1103/PhysRevC.78.034307

Time-of-flight mass measurements of exotic nuclei
journal, December 2012

Matoš, M.; Estradé, A.; Schatz, H.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 696
DOI: 10.1016/j.nima.2012.08.104

Single-particle structure of silicon isotopes approaching ${}^{42}{Si}$
journal, September 2014

Stroberg, S. R.; Gade, A.; Tostevin, J. A.
Physical Review C, Vol. 90, Issue 3
DOI: 10.1103/PhysRevC.90.034301

Quadrupole Collectivity beyond $N = 28$ : Intermediate-Energy Coulomb Excitation of ${}^{47, 48}{Ar}$
journal, April 2012

Winkler, R.; Gade, A.; Baugher, T.
Physical Review Letters, Vol. 108, Issue 18
DOI: 10.1103/PhysRevLett.108.182501

Commissioning the A1900 projectile fragment separator
journal, May 2003

Morrissey, D. J.; Sherrill, B. M.; Steiner, M.
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 204
DOI: 10.1016/S0168-583X(02)01895-5

Nuclear magic numbers: New features far from stability
journal, October 2008

Sorlin, O.; Porquet, M. -G.
Progress in Particle and Nuclear Physics, Vol. 61, Issue 2
DOI: 10.1016/j.ppnp.2008.05.001

The nuclear shell model towards the drip lines
journal, January 2001

Brown, B. A.
Progress in Particle and Nuclear Physics, Vol. 47, Issue 2
DOI: 10.1016/S0146-6410(01)00159-4

Shape Coexistence and the $N = 28$ Shell Closure Far from Stability
journal, May 2000

Sarazin, F.; Savajols, H.; Mittig, W.
Physical Review Letters, Vol. 84, Issue 22
DOI: 10.1103/PhysRevLett.84.5062

Well Developed Deformation in ${}^{42}{Si}$
journal, November 2012

Takeuchi, S.; Matsushita, M.; Aoi, N.
Physical Review Letters, Vol. 109, Issue 18
DOI: 10.1103/PhysRevLett.109.182501

Collectivity in 44S
journal, March 1997

Glasmacher, T.; Brown, B. A.; Chromik, M. J.
Physics Letters B, Vol. 395, Issue 3-4
DOI: 10.1016/S0370-2693(97)00077-4

Triple configuration coexistence in ${}^{44}S$
journal, June 2011

Santiago-Gonzalez, D.; Wiedenhöver, I.; Abramkina, V.
Physical Review C, Vol. 83, Issue 6
DOI: 10.1103/PhysRevC.83.061305

The S800 spectrograph
journal, May 2003

Bazin, D.; Caggiano, J. A.; Sherrill, B. M.
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 204
DOI: 10.1016/S0168-583X(02)02142-0

Prolate-Spherical Shape Coexistence at $N = 28$ in ${}^{44}S$
journal, September 2010

Force, C.; Grévy, S.; Gaudefroy, L.
Physical Review Letters, Vol. 105, Issue 10
DOI: 10.1103/PhysRevLett.105.102501

Lifetime measurements of excited states in neutron-rich ${}^{44, 46}{Ar}$ populated via a multinucleon transfer reaction
journal, August 2010

Mengoni, D.; Valiente-Dobón, J. J.; Gadea, A.
Physical Review C, Vol. 82, Issue 2
DOI: 10.1103/PhysRevC.82.024308

Detailed experimental study on intermediate-energy Coulomb excitation of $^{46} Ar$
journal, July 2003

Gade, A.; Bazin, D.; Campbell, C. M.
Physical Review C, Vol. 68, Issue 1
DOI: 10.1103/PhysRevC.68.014302

Time-of-Flight Mass Measurements for Nuclear Processes in Neutron Star Crusts
journal, October 2011

Estradé, A.; Matoš, M.; Schatz, H.
Physical Review Letters, Vol. 107, Issue 17
DOI: 10.1103/PhysRevLett.107.172503

A fast and accurate position-sensitive timing detector based on secondary electron emission
journal, November 2000

Shapira, D.; Lewis, T. A.; Hulett, L. D.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 454, Issue 2-3
DOI: 10.1016/S0168-9002(00)00499-X

Collapse of the $N = 28$ Shell Closure in ${}^{42}S i$
journal, July 2007

Bastin, B.; Grévy, S.; Sohler, D.
Physical Review Letters, Vol. 99, Issue 2
DOI: 10.1103/PhysRevLett.99.022503

Knockout from ${}^{46}{Ar} : ℓ = 3$ neutron removal and deviations from eikonal theory
journal, May 2005

Gade, A.; Bazin, D.; Bertulani, C. A.
Physical Review C, Vol. 71, Issue 5
DOI: 10.1103/PhysRevC.71.051301

In-Beam $γ$ -Ray Spectroscopy of Very Neutron-Rich Nuclei: Excited States in ${}^{46}S$ and ${}^{48}{Ar}$
journal, May 2009

Gade, A.; Adrich, P.; Bazin, D.
Physical Review Letters, Vol. 102, Issue 18
DOI: 10.1103/PhysRevLett.102.182502

Merging of the islands of inversion at $N = 20$ and $N = 28$
journal, July 2014

Caurier, E.; Nowacki, F.; Poves, A.
Physical Review C, Vol. 90, Issue 1
DOI: 10.1103/PhysRevC.90.014302

Recent trends in the determination of nuclear masses
journal, August 2003

Lunney, D.; Pearson, J. M.; Thibault, C.
Reviews of Modern Physics, Vol. 75, Issue 3
DOI: 10.1103/RevModPhys.75.1021

Shell Erosion and Shape Coexistence in ${}_{16}^{43}S_{27}$
journal, March 2009

Gaudefroy, L.; Daugas, J. M.; Hass, M.
Physical Review Letters, Vol. 102, Issue 9
DOI: 10.1103/PhysRevLett.102.092501

Masses of exotic calcium isotopes pin down nuclear forces
journal, June 2013

Wienholtz, F.; Beck, D.; Blaum, K.
Nature, Vol. 498, Issue 7454
DOI: 10.1038/nature12226

Time-of-flight mass spectrometry of very exotic systems
journal, September 2013

Meisel, Z.; George, S.
International Journal of Mass Spectrometry, Vol. 349-350
DOI: 10.1016/j.ijms.2013.03.022

The Nubase2012 evaluation of nuclear properties
journal, December 2012

Audi, G.; Kondev, F. G.; Wang, M.
Chinese Physics C, Vol. 36, Issue 12
DOI: 10.1088/1674-1137/36/12/001

Study of the Neutron-rich Isotope $^{46}$Ar Through Intermediate Energy Coulomb Excitation
journal, January 2014

Calinescu, S.; Cáceres, L.; Grévy, S.
Acta Physica Polonica B, Vol. 45, Issue 2
DOI: 10.5506/APhysPolB.45.199

The Ame2012 atomic mass evaluation
journal, December 2012

Audi, G.; Wang, M.; Wapstra, A. H.
Chinese Physics C, Vol. 36, Issue 12
DOI: 10.1088/1674-1137/36/12/002

Shape transitions in exotic Si and S isotopes and tensor-force-driven Jahn-Teller effect
journal, November 2012

Utsuno, Yutaka; Otsuka, Takaharu; Brown, B. Alex
Physical Review C, Vol. 86, Issue 5
DOI: 10.1103/PhysRevC.86.051301

Measurement of Excited States in ${}^{40}{Si}$ and Evidence for Weakening of the $N = 28$ Shell Gap
journal, September 2006

Campbell, C. M.; Aoi, N.; Bazin, D.
Physical Review Letters, Vol. 97, Issue 11
DOI: 10.1103/PhysRevLett.97.112501

Structure of Neutron-Rich Ar Isotopes Beyond $N = 28$
journal, July 2008

Bhattacharyya, S.; Rejmund, M.; Navin, A.
Physical Review Letters, Vol. 101, Issue 3
DOI: 10.1103/PhysRevLett.101.032501

New effective interaction for $0 ℏ ω$ shell-model calculations in the $sd − pf$ valence space
journal, January 2009

Nowacki, F.; Poves, A.
Physical Review C, Vol. 79, Issue 1
DOI: 10.1103/PhysRevC.79.014310

Beta-decay studies at the N=28 shell closure
journal, July 2003

Grévy, S.; Mrazek, J.; Angélique, J. C.
Nuclear Physics A, Vol. 722
DOI: 10.1016/S0375-9474(03)01401-5

Transition Probability from the Ground to the First-Excited 2+ State of Even–Even Nuclides
journal, May 2001

Raman, S.; Nestor, C. W.; Tikkanen, P.
Atomic Data and Nuclear Data Tables, Vol. 78, Issue 1
DOI: 10.1006/adnd.2001.0858

Shell model study of $N ≃ 28$ neutron-rich nuclei
journal, June 2010

Gaudefroy, L.
Physical Review C, Vol. 81, Issue 6
DOI: 10.1103/PhysRevC.81.064329

Shell and shape evolution at $N = 28$ : The ${}^{40}{Mg}$ ground state
journal, April 2014

Crawford, H. L.; Fallon, P.; Macchiavelli, A. O.
Physical Review C, Vol. 89, Issue 4
DOI: 10.1103/PhysRevC.89.041303

Nuclear Pairing Gap: How Low Can It Go?
journal, October 2013

Brown, B. Alex
Physical Review Letters, Vol. 111, Issue 16
DOI: 10.1103/PhysRevLett.111.162502

Works referencing / citing this record:

New mass measurements with trapped (radioactive) ions and related fundamental physics
journal, May 2019

Lunney, D.
Hyperfine Interactions, Vol. 240, Issue 1
DOI: 10.1007/s10751-019-1581-z

r -process nucleosynthesis: connecting rare-isotope beam facilities with the cosmos
journal, July 2019

Horowitz, C. J.; Arcones, A.; Côté, B.
Journal of Physics G: Nuclear and Particle Physics, Vol. 46, Issue 8
DOI: 10.1088/1361-6471/ab0849

Excitation energies in neutron-rich rare isotopes as indicators of changing shell structure
journal, September 2015

Gade, Alexandra
The European Physical Journal A, Vol. 51, Issue 9
DOI: 10.1140/epja/i2015-15118-8

Nuclear Reactions in the Crusts of Accreting Neutron Stars
journal, May 2018

Lau, R.; Beard, M.; Gupta, S. S.
The Astrophysical Journal, Vol. 859, Issue 1
DOI: 10.3847/1538-4357/aabfe0

Nuclear Reactions in the Crusts of Accreting Neutron Stars
text, January 2018

Lau, R.; Beard, M.; Gupta, S. S.
arXiv
DOI: 10.48550/arxiv.1803.03818

Similar Records in DOE PAGES and OSTI.GOV collections:

Shell-model study for neutron-rich sd-shell nuclei

Journal Article Kaneko, Kazunari ; Yang, Sun ; Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 ; ... - Physical Review. C, Nuclear Physics

The microscopic structure of neutron-rich sd-shell nuclei is investigated by using the spherical-shell model in the sd-pf valence space with the extended pairing plus quadrupole-quadrupole forces accompanied by the monopole interaction (EPQQM). The calculation reproduces systematically the known energy levels for even-even and odd-mass nuclei including the recent data for {sup 43}S, {sup 46}S, and {sup 47}Ar. In particular, the erosion of the N=28 shell closure in {sup 42}Si can be explained. Our EPQQM results are compared with other shell-model calculations with the SDPF-NR and SDPF-U effective interactions.
https://doi.org/10.1103/PHYSREVC.83.014320
Structure of ²⁸Mg and influence of the neutron pf shell

Journal Article Williams, J. ; Ball, G. C. ; Chester, A. ; ... - Physical Review C

Gamma-ray spectroscopy and lifetime measurements using the Doppler shift attenuation method (DSAM) were performed on the nucleus ²⁸Mg near the N = 20 “island of inversion,” which was populated using a ¹²C (¹⁸O, 2p) ²⁸Mg fusion-evaporation reaction to investigate the impact of shell evolution on its high-lying structure. Three new levels were identified at 7203(3), 7747(2), and 7929.3(12) keV along with several new gamma rays. A newly extracted B(E2; 4more »« less
https://doi.org/10.1103/physrevc.100.014322

Full Text Available
High-spin structure of {sup 37}Cl, intruder excitations, and the sd-fp shell gap

Journal Article Ionescu-Bujor, M ; Iordachescu, A ; Marginean, N ; ... - Physical Review. C, Nuclear Physics

The structure of the N=20 nucleus {sup 37}Cl has been investigated in the {sup 24}Mg({sup 16}O,3p) reaction with a 70 MeV {sup 16}O beam. A complex level scheme extended up to an excitation energy of 17 MeV and spins (29/2{sup +}) and (27/2{sup -}) on positive and negative parity, respectively, has been established. Lifetimes for the new states have been investigated by the Doppler shift attenuation method. Large-scale shell-model calculations have been performed in a valence space involving orbitals in the sd and fp shells using the sdfp and SDPF-M effective interactions. The comparison with the experimental data indicates themore »« less
https://doi.org/10.1103/PHYSREVC.80.034314
Quadrupole collectivity in the neutron-rich sulfur isotopes ^38,40,42,44S

Journal Article Longfellow, B. ; Weisshaar, D. ; Gade, A. ; ... - Physical Review C

Electromagnetic transition strengths in the even-even neutron-rich sulfur isotopes ^38,40,42,44S were measured using intermediate-energy Coulomb excitation at the National Superconducting Cyclotron Laboratory. By utilizing the sensitivity of the experimental technique to E2 excitations from the ground state, the evolution of the pattern of B(E2) strengths to several low-lying 2⁺ states was investigated at Z = 16 from near stability to the N = 28 island of inversion. The experimental results allowed a detailed comparison with predictions from shell-model calculations using the SDPF-MU Hamiltonian, which was designed to describe collectivity in this region of the nuclear chart. While the shell-model calculations succeeded in modeling transition strengths at N = 22, 24, 26, the experimental B(E2;more »« less
https://doi.org/10.1103/physrevc.103.054309

Full Text Available
Structure of unstable nuclei around N = 28 described by a shell model with the monopole-based universal interaction

Journal Article Utsuno, Yutaka ; Otsuka, Takaharu ; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing MI 48824 ; ... - AIP Conference Proceedings

The structure of exotic nuclei around N = 28 is investigated in the sd-pf shell-model space using a new effective interaction. The cross-shell part of the interaction is provided by the monopole-based universal interaction which has been successful in accounting for single-particle evolution in several mass regions. Focusing on the nuclear structure that is sensitive to the shell evolution, we show successful results for the proton-hole states in K isotopes and large deformation in {sup 42}Si. The results demonstrate that the present scheme may be a promising way for constructing an effective interaction for other mass regions.
https://doi.org/10.1063/1.3584060

Similar Records

Title: Mass Measurements Demonstrate a Strong N = 28 Shell Gap in Argon

Abstract

Citation Formats

Nuclear binding and nuclear structure journal, September 2013

New Region of Deformation: The Neutron-Rich Sulfur Isotopes journal, November 1996

Reduction of the Spin-Orbit Splittings at the N = 28 Shell Closure journal, August 2006

Evolution of the N = 28 shell closure: a test bench for nuclear forces journal, January 2013

Structure of the N = 27 isotones derived from the Ar 44 ( d , p ) Ar 45 reaction journal, September 2008

Time-of-flight mass measurements of exotic nuclei journal, December 2012

Single-particle structure of silicon isotopes approaching Si 42 journal, September 2014

Quadrupole Collectivity beyond N = 28 : Intermediate-Energy Coulomb Excitation of Ar 47 , 48 journal, April 2012

Commissioning the A1900 projectile fragment separator journal, May 2003

Nuclear magic numbers: New features far from stability journal, October 2008

The nuclear shell model towards the drip lines journal, January 2001

Shape Coexistence and the N = 28 Shell Closure Far from Stability journal, May 2000

Well Developed Deformation in Si 42 journal, November 2012

Collectivity in 44S journal, March 1997

Triple configuration coexistence in S 44 journal, June 2011

The S800 spectrograph journal, May 2003

Prolate-Spherical Shape Coexistence at N = 28 in S 44 journal, September 2010

Lifetime measurements of excited states in neutron-rich Ar 44 , 46 populated via a multinucleon transfer reaction journal, August 2010

Detailed experimental study on intermediate-energy Coulomb excitation of 46 Ar journal, July 2003

Time-of-Flight Mass Measurements for Nuclear Processes in Neutron Star Crusts journal, October 2011

A fast and accurate position-sensitive timing detector based on secondary electron emission journal, November 2000

Collapse of the N = 28 Shell Closure in S 42 i journal, July 2007

Knockout from Ar 46 : ℓ = 3 neutron removal and deviations from eikonal theory journal, May 2005

In-Beam γ -Ray Spectroscopy of Very Neutron-Rich Nuclei: Excited States in S 46 and Ar 48 journal, May 2009

Merging of the islands of inversion at N = 20 and N = 28 journal, July 2014

Recent trends in the determination of nuclear masses journal, August 2003

Shell Erosion and Shape Coexistence in S 27 16 43 journal, March 2009

Masses of exotic calcium isotopes pin down nuclear forces journal, June 2013

Time-of-flight mass spectrometry of very exotic systems journal, September 2013

The Nubase2012 evaluation of nuclear properties journal, December 2012

Study of the Neutron-rich Isotope $^{46}$Ar Through Intermediate Energy Coulomb Excitation journal, January 2014

The Ame2012 atomic mass evaluation journal, December 2012

Shape transitions in exotic Si and S isotopes and tensor-force-driven Jahn-Teller effect journal, November 2012

Measurement of Excited States in Si 40 and Evidence for Weakening of the N = 28 Shell Gap journal, September 2006

Structure of Neutron-Rich Ar Isotopes Beyond N = 28 journal, July 2008

New effective interaction for 0 ℏ ω shell-model calculations in the sd − pf valence space journal, January 2009

Beta-decay studies at the N=28 shell closure journal, July 2003

Transition Probability from the Ground to the First-Excited 2+ State of Even–Even Nuclides journal, May 2001

Shell model study of N ≃ 28 neutron-rich nuclei journal, June 2010

Shell and shape evolution at N = 28 : The Mg 40 ground state journal, April 2014

Nuclear Pairing Gap: How Low Can It Go? journal, October 2013

New mass measurements with trapped (radioactive) ions and related fundamental physics journal, May 2019

r -process nucleosynthesis: connecting rare-isotope beam facilities with the cosmos journal, July 2019

Excitation energies in neutron-rich rare isotopes as indicators of changing shell structure journal, September 2015

Nuclear Reactions in the Crusts of Accreting Neutron Stars journal, May 2018

Nuclear Reactions in the Crusts of Accreting Neutron Stars text, January 2018

Nuclear binding and nuclear structure
journal, September 2013

New Region of Deformation: The Neutron-Rich Sulfur Isotopes
journal, November 1996

Reduction of the Spin-Orbit Splittings at the $N = 28$ Shell Closure
journal, August 2006

Evolution of the N = 28 shell closure: a test bench for nuclear forces
journal, January 2013

Structure of the $N = 27$ isotones derived from the ${}^{44}{Ar}$ ( $d, p$ ) ${}^{45}{Ar}$ reaction
journal, September 2008

Time-of-flight mass measurements of exotic nuclei
journal, December 2012

Single-particle structure of silicon isotopes approaching ${}^{42}{Si}$
journal, September 2014

Quadrupole Collectivity beyond $N = 28$ : Intermediate-Energy Coulomb Excitation of ${}^{47, 48}{Ar}$
journal, April 2012

Commissioning the A1900 projectile fragment separator
journal, May 2003

Nuclear magic numbers: New features far from stability
journal, October 2008

The nuclear shell model towards the drip lines
journal, January 2001

Shape Coexistence and the $N = 28$ Shell Closure Far from Stability
journal, May 2000

Well Developed Deformation in ${}^{42}{Si}$
journal, November 2012

Collectivity in 44S
journal, March 1997

Triple configuration coexistence in ${}^{44}S$
journal, June 2011

The S800 spectrograph
journal, May 2003

Prolate-Spherical Shape Coexistence at $N = 28$ in ${}^{44}S$
journal, September 2010

Lifetime measurements of excited states in neutron-rich ${}^{44, 46}{Ar}$ populated via a multinucleon transfer reaction
journal, August 2010

Detailed experimental study on intermediate-energy Coulomb excitation of $^{46} Ar$
journal, July 2003

Time-of-Flight Mass Measurements for Nuclear Processes in Neutron Star Crusts
journal, October 2011

A fast and accurate position-sensitive timing detector based on secondary electron emission
journal, November 2000

Collapse of the $N = 28$ Shell Closure in ${}^{42}S i$
journal, July 2007

Knockout from ${}^{46}{Ar} : ℓ = 3$ neutron removal and deviations from eikonal theory
journal, May 2005

In-Beam $γ$ -Ray Spectroscopy of Very Neutron-Rich Nuclei: Excited States in ${}^{46}S$ and ${}^{48}{Ar}$
journal, May 2009

Merging of the islands of inversion at $N = 20$ and $N = 28$
journal, July 2014

Recent trends in the determination of nuclear masses
journal, August 2003

Shell Erosion and Shape Coexistence in ${}_{16}^{43}S_{27}$
journal, March 2009

Masses of exotic calcium isotopes pin down nuclear forces
journal, June 2013

Time-of-flight mass spectrometry of very exotic systems
journal, September 2013

The Nubase2012 evaluation of nuclear properties
journal, December 2012

Study of the Neutron-rich Isotope $^{46}$Ar Through Intermediate Energy Coulomb Excitation
journal, January 2014

The Ame2012 atomic mass evaluation
journal, December 2012

Shape transitions in exotic Si and S isotopes and tensor-force-driven Jahn-Teller effect
journal, November 2012

Measurement of Excited States in ${}^{40}{Si}$ and Evidence for Weakening of the $N = 28$ Shell Gap
journal, September 2006

Structure of Neutron-Rich Ar Isotopes Beyond $N = 28$
journal, July 2008

New effective interaction for $0 ℏ ω$ shell-model calculations in the $sd − pf$ valence space
journal, January 2009

Beta-decay studies at the N=28 shell closure
journal, July 2003

Transition Probability from the Ground to the First-Excited 2+ State of Even–Even Nuclides
journal, May 2001

Shell model study of $N ≃ 28$ neutron-rich nuclei
journal, June 2010

Shell and shape evolution at $N = 28$ : The ${}^{40}{Mg}$ ground state
journal, April 2014

Nuclear Pairing Gap: How Low Can It Go?
journal, October 2013

New mass measurements with trapped (radioactive) ions and related fundamental physics
journal, May 2019

r -process nucleosynthesis: connecting rare-isotope beam facilities with the cosmos
journal, July 2019

Excitation energies in neutron-rich rare isotopes as indicators of changing shell structure
journal, September 2015

Nuclear Reactions in the Crusts of Accreting Neutron Stars
journal, May 2018

Nuclear Reactions in the Crusts of Accreting Neutron Stars
text, January 2018