Level densities of transitional Sm nuclei

R. Capote, A. Ventura, F. Cannata, J. M. Quesada
2005 Physical Review C  
Experimentally determined level densities of the transitional isotopes 148,149,150,152 Sm at excitation energies below and around the neutron binding energy are compared with microcanonical calculations based on a Monte Carlo approach to noncollective level densities, folded with a collective enhancement estimated in the frame of the interacting boson model (IBM). The IBM parameters are adjusted so as to reproduce the low-lying discrete levels of both parities, with the exception of the
more » ... tion of the odd-mass nucleus, 149 Sm, where complete decoupling of the unpaired neutron from the core is assumed.
doi:10.1103/physrevc.71.064320 fatcat:3dtnvpad6ngyjh2f4jouhcqz4u