Energy-dependence of skin-mode fraction in E1 excitations of neutron-rich nuclei

Energy-dependence of skin-mode fraction in E1 excitations of neutron-rich nuclei

We have extensively investigated characters of the low-energy E1 strengths in N > Z nuclei, by analyzing the transition densities obtained by the HF+RPA calculations with several effective interactions. Crossover behavior has been confirmed, from the skin mode at low energy to the pn mode at highe...

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Main Authors: Nakada H., Inakura T., Sawai H.
Format: Article
Language:English
Published: EDP Sciences 2015-01-01
Series:EPJ Web of Conferences
Online Access:http://dx.doi.org/10.1051/epjconf/20159301052
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spelling doaj-714396773e014594aa95d05e854454262021-08-02T19:55:26ZengEDP SciencesEPJ Web of Conferences2100-014X2015-01-01930105210.1051/epjconf/20159301052epjconf_cgs2015_01052Energy-dependence of skin-mode fraction in E1 excitations of neutron-rich nucleiNakada H.0Inakura T.1Sawai H.2Department of Physics, Graduate School of Science, Chiba UniversityDepartment of Physics, Graduate School of Science, Chiba UniversityDepartment of Physics, Graduate School of Science, Chiba UniversityWe have extensively investigated characters of the low-energy E1 strengths in N > Z nuclei, by analyzing the transition densities obtained by the HF+RPA calculations with several effective interactions. Crossover behavior has been confirmed, from the skin mode at low energy to the pn mode at higher energy. Decomposing the E1 strengths into the skin-mode, pn-mode and interference fractions, we show that the ratio of the skin-mode strength to the full strength may be regarded as a generic function of the excitation energy, insensitive to nuclides and effective interactions, particularly beyond Ni.http://dx.doi.org/10.1051/epjconf/20159301052
collection DOAJ
language English
format Article
sources DOAJ
author Nakada H.
Inakura T.
Sawai H.
spellingShingle Nakada H.
Inakura T.
Sawai H.
Energy-dependence of skin-mode fraction in E1 excitations of neutron-rich nuclei
EPJ Web of Conferences
author_facet Nakada H.
Inakura T.
Sawai H.
author_sort Nakada H.
title Energy-dependence of skin-mode fraction in E1 excitations of neutron-rich nuclei
title_short Energy-dependence of skin-mode fraction in E1 excitations of neutron-rich nuclei
title_full Energy-dependence of skin-mode fraction in E1 excitations of neutron-rich nuclei
title_fullStr Energy-dependence of skin-mode fraction in E1 excitations of neutron-rich nuclei
title_full_unstemmed Energy-dependence of skin-mode fraction in E1 excitations of neutron-rich nuclei
title_sort energy-dependence of skin-mode fraction in e1 excitations of neutron-rich nuclei
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2015-01-01
description We have extensively investigated characters of the low-energy E1 strengths in N > Z nuclei, by analyzing the transition densities obtained by the HF+RPA calculations with several effective interactions. Crossover behavior has been confirmed, from the skin mode at low energy to the pn mode at higher energy. Decomposing the E1 strengths into the skin-mode, pn-mode and interference fractions, we show that the ratio of the skin-mode strength to the full strength may be regarded as a generic function of the excitation energy, insensitive to nuclides and effective interactions, particularly beyond Ni.
url http://dx.doi.org/10.1051/epjconf/20159301052
work_keys_str_mv AT nakadah energydependenceofskinmodefractionine1excitationsofneutronrichnuclei
AT inakurat energydependenceofskinmodefractionine1excitationsofneutronrichnuclei
AT sawaih energydependenceofskinmodefractionine1excitationsofneutronrichnuclei
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