dorsal/arxiv
View SchemaPrecession Mode on High-K Configurations: Non-Collective Axially-Symmetric Limit of Wobbling Motion
| Authors | Yoshifumi R. Shimizu, Masayuki Matsuzaki, Kenichi Matsuyanagi |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0507045 |
| URL | https://arxiv.org/abs/nucl-th/0507045 |
| DOI | 10.1088/0031-8949/2006/T125/031 |
Abstract
We have studied the precession mode, the rotational excitation built on the high-$K$ isomeric state, in comparison with the recently identified wobbling mode. The random-phase-approximation (RPA) formalism, which has been developed for the nuclear wobbling motion, is invoked and the precession phonon is obtained by the non-collective axially-symmetric limit of the formalism. The excitation energies and the electromagnetic properties of the precession bands in $^{178}$W are calculated, and it is found that the results of RPA calculations well correspond to those of the rotor model; the correspondence can be understood by an adiabatic approximation to the RPA phonon. As a by-product, it is also found that the problem of too small out-of-band $B(E2)$ in our previous RPA wobbling calculations can be solved by a suitable choice of the triaxial deformation which corresponds to the one used in the rotor model.
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"abstract": "We have studied the precession mode, the rotational excitation built on the\nhigh-$K$ isomeric state, in comparison with the recently identified wobbling\nmode. The random-phase-approximation (RPA) formalism, which has been developed\nfor the nuclear wobbling motion, is invoked and the precession phonon is\nobtained by the non-collective axially-symmetric limit of the formalism. The\nexcitation energies and the electromagnetic properties of the precession bands\nin $^{178}$W are calculated, and it is found that the results of RPA\ncalculations well correspond to those of the rotor model; the correspondence\ncan be understood by an adiabatic approximation to the RPA phonon. As a\nby-product, it is also found that the problem of too small out-of-band $B(E2)$\nin our previous RPA wobbling calculations can be solved by a suitable choice of\nthe triaxial deformation which corresponds to the one used in the rotor model.",
"arxiv_id": "nucl-th/0507045",
"authors": [
"Yoshifumi R. Shimizu",
"Masayuki Matsuzaki",
"Kenichi Matsuyanagi"
],
"categories": [
"nucl-th"
],
"doi": "10.1088/0031-8949/2006/T125/031",
"title": "Precession Mode on High-K Configurations: Non-Collective Axially-Symmetric Limit of Wobbling Motion",
"url": "https://arxiv.org/abs/nucl-th/0507045"
},
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