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Title: IBM-1 description of the fission products 108,110,112Ru
Authors: Stefanescu, Irina ×
Gelberg, A
Jolie, J
Van Isacker, Pieter
von Brentano, P
Luo, Y.X.
Zhu, S.J.
Rasmussen, J.O.
Hamilton, J.H.
Ramayya, A.V.
Che, X.L. #
Issue Date: 13-Mar-2007
Publisher: North Holland Pub. Co.
Series Title: Nuclear physics A vol:789 pages:125-141
Abstract: IBM-1 calculations for the fission products 108,110,112Ru have been carried out. The even–even isotopes of Ru can be described as transitional nuclei situated between the U(5) (spherical vibrator) and SO(6) (gamma - unstable rotor) symmetries of the interacting Boson Model. At first, a Hamiltonian with only one- and two-body terms has been used. Excitation energies and B(E2) ratios of gamma transitions have been calculated. A satisfactory agreement has been obtained, with the exception of the odd–even staggering in the quasi-gamma bands of 110,112Ru. The observed pattern is rather similar to the one for a rigid triaxial rotor. A calculation
based on a Hamiltonian with three-body terms was able to remove this discrepancy. The relation between the IBM and the triaxial rotor model was also examined.
ISSN: 0375-9474
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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