Abstract
The spin cutoff parameter determining the nuclear level density spin distribution is defined through the spin projection as or equivalently for spherical nuclei, . It is needed to divide the total level density into levels as a function of . To obtain the total level density at the neutron binding energy from the -wave resonance count, the spin cutoff parameter is also needed. The spin cutoff parameter has been calculated as a function of excitation energy and mass with a super-conducting Hamiltonian. Calculations have been compared with two commonly used semiempirical formulas. A need for further measurements is also observed. Some complications for deformed nuclei are discussed. The quality of spin cut off parameter data derived from isomeric ratio measurement is examined.
- Received 22 May 2015
- Revised 4 May 2016
DOI:https://doi.org/10.1103/PhysRevC.94.014308
©2016 American Physical Society