Eur. Phys. J. A (2009) 42: 591-594
https://doi.org/10.1140/epja/i2009-10811-9

Regular Article - Theoretical Physics

Systematic study of electric-dipole excitations with fully self-consistent Skyrme HF plus RPA from light-to-medium-mass deformed nuclei

¹ Institute for Physics, University of Tsukuba, 305-8571, Tsukuba, Japan
² Theoretical Nuclear Physics Laboratory, RIKEN Nishina Center, 351-0198, Wako, Japan
³ Center for Computational Sciences, University of Tsukuba, 305-8571, Tsukuba, Japan

^* e-mail: inakura@nucl.ph.tsukuba.ac.jp

Received: 31 December 2008
Revised: 12 April 2009
Accepted: 13 April 2009
Published online: 30 May 2009

Abstract

We undertake a systematic calculation on electric-dipole responses of even-even nuclei for a wide mass region employing a fully self-consistent Hartree-Fock plus RPA approach. For an easy implementation of the fully self-consistent calculation, the finite-amplitude method which we have proposed recently is employed. We calculated dipole responses in Cartesian mesh representation, which can deal with deformed nuclei but do not include pairing correlation. The systematic calculation has reached Nickel isotopes. The calculated results show reasonable agreement for heavy nuclei while the average excitation energies are underestimated for light nuclei. We show a systematic comparison of the splitting of the peak energy with the ground-state deformation.