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Title: Experimentally constrained ( p , γ ) Y 89 and ( n , γ ) Y 89 reaction rates relevant to p -process nucleosynthesis

The nuclear level density and the g-ray strength function have been extracted for 89Y, using the Oslo Method on 89Y(p,p'γ) 89Y coincidence data. The g-ray strength function displays a low-energy enhancement consistent with previous observations in this mass region ( 93-98Mo). Shell-model calculations give support that the observed enhancement is due to strong, low-energy M1 transitions at high excitation energies. The data were further used as input for calculations of the 88Sr(p,γ) 89Y and 88Y(n,γ) 89Y cross sections with the TALYS reaction code. Lastly, comparison with cross-section data, where available, as well as with values from the BRUSLIB library, shows a satisfying agreement.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [1] ;  [6] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [6] more »;  [7] « less
  1. Univ. of Oslo, Oslo (Norway)
  2. Helmholtz-Zentrum Dresden-Rossendorf, Dresden (Germany)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Univ. Libre de Bruxelles, Brussels (Belgium)
  5. NCSR "Demokritos", Athens (Greece)
  6. Ohio Univ., Athens, OH (United States)
  7. iThemba LABS, Somerset West (South Africa)
Publication Date:
Report Number(s):
LLNL-JRNL-678709
Journal ID: ISSN 2469-9985; PRVCAN
Grant/Contract Number:
NA0002905; AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 93; Journal Issue: 4; Journal ID: ISSN 2469-9985
Publisher:
APS
Research Org:
Ohio Univ., Athens, OH (United States); Lawrence Livermore National Lab. (LLNL), Livermore, 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; nuclear level density; gamma-strength functions; astrophysical reaction rates
OSTI Identifier:
1338920
Alternate Identifier(s):
OSTI ID: 1357364