Microscopic description of the scissors mode and its fragmentation

T. Beuschel, Louisiana State University
J. P. Draayer, Louisiana State University
D. Rompf, Justus-Liebig-Universität Gießen
J. G. Hirsch, Centro de Investigacion y de Estudios Avanzados


The [Formula Presented] transition and ground state spectra of the even-even [Formula Presented] and [Formula Presented] isotopes are calculated within the framework of the microscopic pseudo-SU(3) shell model. A reasonable description of the [Formula Presented] strength function, including its fragmentation, is obtained with an interaction that includes collective as well as single-particle and pairing terms with the parameters of the theory fit to the energy spectrum and [Formula Presented] transition strengths. © 1998 The American Physical Society.