Combinatorial nuclear level-density model

TY - JOUR

T1 - Combinatorial nuclear level-density model

AU - Uhrenholt, H.

AU - Aberg, S.

AU - Dobrowolski, A.

AU - Døssing, Thomas

AU - Ichikawa, T.

AU - Moeller, P.

PY - 2013/9/2

Y1 - 2013/9/2

N2 - A microscopic nuclear level-density model is presented. The model is a completely combinatorial (micro-canonical) model based on the folded-Yukawa single-particle potential and includes explicit treatment of pairing, rotational and vibrational states. The microscopic character of all states enables extraction of level-distribution functions with respect to pairing gaps, parity and angular momentum. The results of the model are compared to available experimental data: level spacings at neutron separation energy, data on total level-density functions from the Oslo method, cumulative level densities from low-lying discrete states, and data on parity ratios. Spherical and deformed nuclei follow basically different coupling schemes, and we focus on deformed nuclei.

AB - A microscopic nuclear level-density model is presented. The model is a completely combinatorial (micro-canonical) model based on the folded-Yukawa single-particle potential and includes explicit treatment of pairing, rotational and vibrational states. The microscopic character of all states enables extraction of level-distribution functions with respect to pairing gaps, parity and angular momentum. The results of the model are compared to available experimental data: level spacings at neutron separation energy, data on total level-density functions from the Oslo method, cumulative level densities from low-lying discrete states, and data on parity ratios. Spherical and deformed nuclei follow basically different coupling schemes, and we focus on deformed nuclei.

U2 - 10.1016/j.nuclphysa.2013.06.002

DO - 10.1016/j.nuclphysa.2013.06.002

M3 - Journal article

SN - 0375-9474

VL - 913

SP - 127

EP - 156

JO - Nuclear Physics A

JF - Nuclear Physics A

ER -