Nuclear reaction models, and in particular compound nucleus reactions, require the knowledge of nuclear level densities (NLDs), among other ingredients. For decades, analytical expressions have been used in nuclear reaction codes, due to the freedom they offer to the user to modify their associated parameters in order to fit cross sections.
The development of computational resources has...
All level density models currently used in nuclear reaction codes are based on experimental data on absolute values of nuclear level density which are basically coming from two data sets: discrete level scheme at low excitation energies and the s-wave neutron resonance spacing (D0) at the neutron separation energy. These data are known in very limited ranges of excitation energies and spins....
We employ a new method to extract the level densities of neutron-rich isotopes by utilizing (n,p) and (n,$\alpha$) reactions and the evaporation technique to analyze the emitted particle spectra. This level density extraction method is particularly suited to nucleosynthesis at low neutron exposures that typically proceeds by neutron captures along a path extending within a few neutrons away...
