Large-scale prediction of the parity distribution in the nuclear level density and application to astrophysical reaction rates

  title={Large-scale prediction of the parity distribution in the nuclear level density and application to astrophysical reaction rates},
  author={D. Mocelj and Thomas Rauscher and Gabriel Mart{\'i}nez-Pinedo and Karlheinz Langanke and Larisa Pacearescu and Amand Faessler and F. Thielemann and Y. Alhassid},
  journal={Physical Review C},
A generalized method to calculate the excitation-energy dependent parity ratio in the nuclear level density is presented, using the assumption of Poisson distributed independent quasi particles combined with BCS occupation numbers. It is found that it is crucial to employ a sufficiently large model space to allow excitations both from low-lying shells and to higher shells beyond a single major shell. Parity ratios are only found to equilibrate above at least 5-10 MeV of excitation energy… 
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