Fragmentation of the Scissors Mode in Deformed Nuclei
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
Draayer, J., Beuschel, T., Rompf, D., & Hirsch, J. (1998). Fragmentation of the Scissors Mode in Deformed Nuclei. Physics of Atomic Nuclei, 61 (10), 1631-1638. Retrieved from https://digitalcommons.lsu.edu/physics_astronomy_pubs/1928