60 research outputs found
Exotic Shapes in ^{32}S suggested by the Symmetry-Unrestricted Cranked Hartree-Fock Calculations
High-spin structure of ^{32}S is investigated by means of the cranked
Skyrme-Hartree-Fock method in the three-dimensional Cartesian-mesh
representation. Some interesting suggestions are obtained: 1) An internal
structure change (toward hyperdeformation) may occur at I>20 in the
superdeformed band, 2) A non-axial Y_{31} deformed band may appear in the yrast
line with 4<I<14.Comment: 10 pages including 6 PS figures, Talk at the Nuclear Structure '98
International Conferenc
Effects of Octupole Vibrations on Quasiparticle Modes of Excitation in Superdeformed Hg
A particle-vibration coupling calculation based on the RPA and the cranked
shell model has been carried out for superdeformed rotational bands in
Hg. The result suggests that properties of single-particle motions in
superdeformed nuclei may be significantly affected by coupling effects with
low-frequency octupole vibrational modes, especially by the lowest
octupole mode.Comment: 8 page
Dynamic Pairing Effects on Low-Frequency Modes of Excitation in Deformed Mg Isotopes close to the Neutron Drip Line
Low-frequency quadrupole vibrations in deformed Mg are studied
by means of the deformed Quasiparticle-RPA based on the coordinate-space
Hartree-Fock-Bogoliubov formalism. Strongly collective and
excitation modes (carrying 10-20 W.u.) are obtained at about 3 MeV. It
is found that dynamical pairing effects play an essential role in generating
these modes. It implies that the lowest excitation modes are
particularly sensitive indicators of dynamical pairing correlations in deformed
nuclei near the neutron drip line.Comment: Talk given at Int. Conference "Finite Fermionic Systems: Nilsson
Model 50 Years", Lund, Sweden, June 14-18, 200
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