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Title: Inverse-kinematics proton scattering from S 42 , 44 ,  P 41 , 43 , and the collapse of the N = 28 major shell closure

Abstract

Excited states of the neutron-rich isotopes S 42 , 44 and P 41 , 43 have been investigated via inverse-kinematics proton scattering from a liquid hydrogen target, using the GRETINA γ -ray tracking array to extract inelastic-scattering cross sections. Deformation lengths of the 2 1 + excitations in S 42 , 44 have been observed and, when combined with deformation lengths determined with electromagnetic probes, yield the ratio of neutron-to-proton matrix elements M n / M p for the 2 1 + excitations in these nuclei. The present results for P 41 , 43 ( p , p' ) are used to compare two shell-model interactions, SDPF-U and SDPF-MU. As in a recent study of Si 42 , the present results on P 41 , 43 favor the SDPF-MU interaction.

Authors:
ORCiD logo [1];  [2];  [3];  [4];  [2];  [5];  [2];  [2];  [1];  [1];  [5];  [1];  [1];  [2];  [2];  [2];  [4];  [2];  [1];  [2] more »;  [5];  [4];  [4];  [6] « less
  1. Ursinus College, Collegeville, PA (United States)
  2. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.; Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
  3. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.; Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy; Massachusetts Inst. of Technology (MIT), Lexington, MA (United States). Lincoln Lab.
  4. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.
  5. Florida State Univ., Tallahassee, FL (United States). Dept. of Physics
  6. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.; Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy; Michigan State Univ., East Lansing, MI (United States). Joint Inst. for Nuclear Astrophysics-Center for the Evolution of the Elements
Publication Date:
Research Org.:
Florida State Univ., Tallahassee, FL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)
OSTI Identifier:
1593977
Grant/Contract Number:  
SC0009883; SC0014537; AC02-05CH11231; PHY-1617250; PHY-1064819; PHY-1565546; PHY-1607335
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 100; Journal Issue: 4; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Riley, L. A., Bazin, D., Belarge, J., Bender, P. C., Brown, B. A., Cottle, P. D., Elman, B., Gade, A., Gregory, S. D., Haldeman, E. B., Kemper, K. W., Klybor, B. R., Liggett, M. A., Lipschutz, S., Longfellow, B., Lunderberg, E., Mijatovic, T., Pereira, J., Skiles, L. M., Titus, R., Volya, A., Weisshaar, D., Zamora, J. C., and Zegers, R. G. T. Inverse-kinematics proton scattering from S42,44, P41,43 , and the collapse of the N=28 major shell closure. United States: N. p., 2019. Web. doi:10.1103/PhysRevC.100.044312.
Riley, L. A., Bazin, D., Belarge, J., Bender, P. C., Brown, B. A., Cottle, P. D., Elman, B., Gade, A., Gregory, S. D., Haldeman, E. B., Kemper, K. W., Klybor, B. R., Liggett, M. A., Lipschutz, S., Longfellow, B., Lunderberg, E., Mijatovic, T., Pereira, J., Skiles, L. M., Titus, R., Volya, A., Weisshaar, D., Zamora, J. C., & Zegers, R. G. T. Inverse-kinematics proton scattering from S42,44, P41,43 , and the collapse of the N=28 major shell closure. United States. https://doi.org/10.1103/PhysRevC.100.044312
Riley, L. A., Bazin, D., Belarge, J., Bender, P. C., Brown, B. A., Cottle, P. D., Elman, B., Gade, A., Gregory, S. D., Haldeman, E. B., Kemper, K. W., Klybor, B. R., Liggett, M. A., Lipschutz, S., Longfellow, B., Lunderberg, E., Mijatovic, T., Pereira, J., Skiles, L. M., Titus, R., Volya, A., Weisshaar, D., Zamora, J. C., and Zegers, R. G. T. Thu . "Inverse-kinematics proton scattering from S42,44, P41,43 , and the collapse of the N=28 major shell closure". United States. https://doi.org/10.1103/PhysRevC.100.044312. https://www.osti.gov/servlets/purl/1593977.
@article{osti_1593977,
title = {Inverse-kinematics proton scattering from S42,44, P41,43 , and the collapse of the N=28 major shell closure},
author = {Riley, L. A. and Bazin, D. and Belarge, J. and Bender, P. C. and Brown, B. A. and Cottle, P. D. and Elman, B. and Gade, A. and Gregory, S. D. and Haldeman, E. B. and Kemper, K. W. and Klybor, B. R. and Liggett, M. A. and Lipschutz, S. and Longfellow, B. and Lunderberg, E. and Mijatovic, T. and Pereira, J. and Skiles, L. M. and Titus, R. and Volya, A. and Weisshaar, D. and Zamora, J. C. and Zegers, R. G. T.},
abstractNote = {Excited states of the neutron-rich isotopes S42,44 and P41,43 have been investigated via inverse-kinematics proton scattering from a liquid hydrogen target, using the GRETINA γ-ray tracking array to extract inelastic-scattering cross sections. Deformation lengths of the 21+ excitations in S42,44 have been observed and, when combined with deformation lengths determined with electromagnetic probes, yield the ratio of neutron-to-proton matrix elements Mn/Mp for the 21+ excitations in these nuclei. The present results for P41,43(p,p') are used to compare two shell-model interactions, SDPF-U and SDPF-MU. As in a recent study of Si42, the present results on P41,43 favor the SDPF-MU interaction.},
doi = {10.1103/PhysRevC.100.044312},
journal = {Physical Review C},
number = 4,
volume = 100,
place = {United States},
year = {Thu Oct 17 00:00:00 EDT 2019},
month = {Thu Oct 17 00:00:00 EDT 2019}
}

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TABLE I TABLE I: Secondary beam properties and yields.

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