Microscopic Description of Anharmonic Gamma-Vibrations by Means of the Selfconsistent-Collective-Coordinate Method. III
- 1 September 1987
- journal article
- Published by Oxford University Press (OUP) in Progress of Theoretical Physics
- Vol. 78 (3) , 591-608
- https://doi.org/10.1143/ptp.78.591
Abstract
Properties of the anharmonic gamma-vibrations and their (N, Z)-dependence are investigated in a wide region of the rare-earth deformed nuclei. The effective Hamiltonian which contains, in addition to the monopole-pairing plus (doubly-stretched) quadrupole-quadrupole interactions, the quadrupole-pairing interaction and the effective three-body force is used in the microscopic calculation. Dynamical anharmonicity effects arising from the mode-mode couplings are analysed in detail in relation to these effective interactions. The couplings between the gamma-vibrations and the pairing rotations are also taken into account in order to recover the nucleon-number consevation. The numerical calculation indicates that the properties of the anharmonic gamma-vibrations significantly change from one nucleus to another reflecting the subshell structure near the Fermi surface. A characteristic (N, Z)-dependence of the double gamma-vibrational states is predicted for some Dy and Er isotopes.Keywords
This publication has 1 reference indexed in Scilit:
- On the Spectrum of168ErPhysica Scripta, 1982