Fragmentation of the Scissors Mode in Deformed Nuclei

Document Type

Article

Publication Date

10-1-1998

Abstract

A proton-neutron pseudo-SU(3) model is used to study the nature of low-lying magnetic dipole excitations. Triaxiality of the parent proton and neutron distributions is shown to add a "twist" degree of freedom to the usual scissors-mode picture and is reflected in a more complex spectrum of transition strengths for the magnetic dipole mode (M1). Fragmentation of the M1-strength distribution can be reproduced within the model by including single-particle terms and pairing in the Hamiltonian.

Publication Source (Journal or Book title)

Physics of Atomic Nuclei

First Page

1631

Last Page

1638

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