Comparative Study of Octupole Excitations on Superdeformed States in ³²S, ³⁶S, ⁴⁰Ca and ⁵⁰S

Abstract

By means of an RPA calculation based on the deformed Woods-Saxon potential in the coordinate-mesh representation, we make a comparative study of octupole excitations built on superdeformed states in the ⁴⁰Ca region and those in ⁵⁰S. For the N = Z stable nuclei, ³²S and ⁴⁰Ca, enhancement of octupole transition strengths results from the coherence of the proton and neutron excitations. Contrastingly, for ⁵⁰S close to the neutron drip line, we find that the low-lying state created by the excitation of a single neutron from a loosely bound low Ω state to a high Ω resonance state acquires an extremely large transition strength. A similar enhancement of the octupole strength is also found in oblately deformed ⁴⁰Mg close to the neutron drip line.

Citing Article(s):

1. Progress of Theoretical Physics Vol. 120 No. 6 (2008) pp. 1169–1192Triaxiality Dependence of Octupole Excitations on Superdeformed States in ⁴⁴Ti Hiromichi Ogasawara, Kenichi Yoshida, Masayuki Yamagami, Shoujirou Mizutori and Kenichi Matsuyanagi

2. Progress of Theoretical Physics Vol. 121 No. 2 (2009) pp. 357–374Rotational Frequency Dependence of Octupole Vibrations on Superdeformed States in ⁴⁰Ca Hiromichi Ogasawara, Kenichi Yoshida, Masayuki Yamagami, Shoujirou Mizutori and Kenichi Matsuyanagi

3. Progress of Theoretical Physics Supplement No.192 (2012) pp. 1–238Recent Developments in Nuclear Cluster Physics Hisashi Horiuchi, Kiyomi Ikeda and Kiyoshi Katō