NUCLEAR LEVEL DENSITY AT A=110-125
Institute of Physics and Energetics, Obninsk, USSR
The analysis of (p,n)-reaction neutron evaporation spectra and neutron resonance density in the range A=110-125 using a generalized superfluid model results in a strong dependence of the ground state correlation function Δ0 and the asymptotic level density parameter ã on nucleon composition. Its origin is associated with the effect of the spherical proton shell Z=50 on Δ0, and the deformed neutron shell N≈66 on ã.
KEYWORDS: nuclear level density, neutron spectra, shell correction