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Title: Lifetime Measurements and Triple Coexisting Band Structure in S 43

Lifetime measurements of excited states in the neutron-rich nucleus 43S were performed by applying the recoil-distance method on fast rare-isotope beams in conjunction with the Gamma-Ray Energy Tracking In-beam Nuclear Array. The new data based on γγ coincidences and lifetime measurements resolve a doublet of (3/2 -) and (5/2 -) states at low excitation energies. Results were compared to the π(sd)-ν(pf) shell model and antisymmetrized molecular dynamics calculations. The consistency with the theoretical calculations identifies a possible appearance of three coexisting bands near the ground state of 43S: the K π=1/2 - band built on a prolate-deformed ground state, a band built on an isomer with a 1f$$-1\atop{7/2}$$ character, and a suggested excited band built on a newly discovered doublet state. The latter further confirms the collapse of the N=28 shell closure in the neutron-rich region.
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [2] ;  [2] ;  [5] ;  [6] ;  [2] ;  [2] ;  [2] ;  [6] ;  [1] ;  [1]
  1. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.
  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. Univ. zu Koln (Germany). Inst. fur Kernphysik
  4. ichigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.; Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
  5. Univ. of York (United Kingdom). Dept. of Physics
  6. Technische Univ. Darmstadt (Germany). Inst. fur Kernphysik
Publication Date:
Grant/Contract Number:
NA0003180; NA0000979; DE 1516/3-1; SC0014537; AC02-05CH11231
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 121; Journal Issue: 1; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Univ. of California, Berkeley, CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
OSTI Identifier:
1459002
Alternate Identifier(s):
OSTI ID: 1459044