Giant dipole resonance in deformed nuclei: dependence on Skyrme forces

Nesterenko, V. O.; Kleinig, W.; Kvasil, J.; Vesely, P.; Reinhard, P. -G.

Giant dipole resonance in deformed nuclei: dependence on Skyrme forces

Authors

Description

The giant dipole resonance (GDR) in deformed nuclei is analyzed using the self-consistent separable random-phase-approximation (SRPA) with Skyrme forces SkT6, SkM$^*$, SLy6 and SkI3. The deformed nuclei $^{150}$Nd and $^{238}$U are used as representative rare-earth and actinide samples. Dependencies of the dipole strength distributions on some basic characteristics of the Skyrme functional and nuclear matter properties (isoscalar and isovector effective masses, time-odd contributions) are discussed. Particular attention is paid to the fragmentation structure of the GDR strength which are shown to depend sensitively to spin-orbit intruder states with large angular momentum.
12 pages, 3 figures