Microscopic Structure of High-Spin Vibrational States in Superdeformed A=190 Nuclei

Details Microscopic Structure of High-Spin Vibrational States in Superdeformed A=190 Nuclei Microscopic Structure of High-Spin Vibrational States in Superdeformed A=190 Nuclei

1996-11-29

arxiv.org/abs/nucl-th/9612002v1

Proc. Conf. on Nucl. Structure at the Limits, Argonne, (1996), ANL/PHY-97/1, p.111.

Physics

Nuclear Physics

Nuclear Theory

6 pages, Latex, using revtex.sty, epsf.sty, multicol.sty, 4 postscript figures included Talk given at the conference on "Nucle

Scientific paper

Microscopic RPA calculations based on the cranked shell model are performed to investigate the quadrupole and octupole correlations for excited superdeformed (SD) bands in even-even A=190 nuclei. The K=2 octupole vibrations are predicted to be the lowest excitation modes at zero rotational frequency. The Coriolis coupling at finite frequency produces different effects depending on the neutron and proton number of nucleus. The calculations also indicate that some collective excitations may produce J(2) moments of inertia almost identical to those of the yrast SD band. An interpretation of the observed excited bands invoking the octupole vibrations is proposed, which suggests those octupole vibrations may be prevalent in even-even SD A=190 nuclei.

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