Level density shell effects in neutron induced reactions on molybdenum isotopes

The gradual reduction of the level density shell effects with increasing excitation is proposed to be described by two coupled phenomenological models: the back-shifted Fermi gas model for medium excitation energies (E ≤ 10 MeV) and the formula for higher energies. This approach, mainly useful for applications, is involved in preequilibrium and statistical model calculations of (n,p), (n,n'p) and some (n,2n) reaction cross-sections for stable molybdenum isotopes, from threshold up to 20 MeV incident energy