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Structure of 43P and 42Si in a two-level shape-coexistence model

Journal Article · · Physical Review C
 [1];  [2];  [2];  [2];  [2];  [2];  [2];  [3];  [4];  [5]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Michigan State University
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.
  4. Autonomous Univ. of Madrid (Spain)
  5. Ohio Univ., Athens, OH (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
+ Show Author Affiliations
Exclusive cross sections for the 43P(-1p)42Si reaction to the lowest 0+ and 2+ states, measured at NSCL with GRETINA and the S800, are interpreted in terms of a two-level mixing (collective) model of oblate and prolate co-existing shapes. Here, using the formalism developed for deformed nuclei we calculate the spectroscopic amplitudes and exclusive cross-sections in the strong coupling limit, where for 43P the schematic wavefunction includes the coupling of the Nilsson [211] 1/2 proton orbit. Good agreement with the experimental data is obtained when the amplitude of the oblate configuration is larger or equal than 80%, suggesting that both nuclei are predominantly oblate, in line with theoretical expectations. Model predictions for excitation energies and electromagnetic observables, that could motivate further studies of both nuclei, are also presented.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Michigan State Univ., East Lansing, MI (United States)
Sponsoring Organization:
Ministerio de Ciencia, Innovacion y Universidades (Spain); USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC02-05CH11231; SC0020451
OSTI ID:
1840541
Alternate ID(s):
OSTI ID: 1843194
Journal Information:
Physical Review C, Journal Name: Physical Review C Journal Issue: 1 Vol. 105; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS