Giant resonances in $^{238}\mathrm{U}$ within the quasiparticle random-phase approximation with the Gogny force

Giant resonances in ${}^{238}U$ within the quasiparticle random-phase approximation with the Gogny force

S. Péru, G. Gosselin, M. Martini, M. Dupuis, S. Hilaire, and J.-C. Devaux

Phys. Rev. C 83, 014314 – Published 27 January 2011

Abstract

Fully consistent axially-symmetric deformed quasiparticle random-phase approximation (QRPA) calculations have been performed, using the same Gogny D1S effective force for both the Hartree-Fock-Bogolyubov mean field and QRPA matrix. New implementation of this approach leads to the applicability of QRPA to heavy deformed nuclei. Giant resonances and low-energy collective states for monopole, dipole, quadrupole, and octupole modes are predicted for the heavy deformed nucleus ${}^{238}U$ and compared with experimental data.