Soft Octupole Vibrations with K = 0 and K ≠ 0 Built on Superdeformed Rotational Bands and Static Pairing Correlations
- 1 July 1991
- journal article
- Published by Oxford University Press (OUP) in Progress of Theoretical Physics
- Vol. 86 (1) , 131-149
- https://doi.org/10.1143/ptp.86.131
Abstract
Properties of low-lying octupole vibrations (with K = 0, 1, 2 and 3) built on superdeformed rotational bands are investigated by means of the RPA in a uniformly rotating frame. Large configuration space composed of 9 major shells is used. Numerical examples are presented for the superdeformed band in 192Hg as a typical case where appreciable amount of static pairing correlations remains at finite values of the rotational frequency. We obtain strongly collective low-frequency octupole vibrations with K = 0, 1 and 2. It is shown that the properties of the K = 1 octupole vibrations are especially sensitive to the static pairing correlations. The Coriolis-mixings among these soft octupole vibrations are shown to become important when the rotational frequency ωrot \gtrsim0.2 MeV/\hbar.Keywords
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