Elsevier

Physics Letters B

Volume 263, Issues 3–4, 18 July 1991, Pages 347-352
Physics Letters B

γ-unstable nuclei in the sdg boson model

https://doi.org/10.1016/0370-2693(91)90471-2Get rights and content

Abstract

Following the recent Pt(p, p′) experiments which indicated the need for g bosons to reproduce the E4 data, we have extended the O(6) limit of the sd boson model to include g bosons. It is shown that a γ-unstable hamiltonian in the sdg model consisting of a quadrupole interaction and a g boson energy leads to results that are very similar to the O(6) limit. Deviations from the empirical energy spectrum that stem from the γ-unstable nature of the hamiltonian can be improved by including a consistent hexadecapole interaction which induces triaxiality. The same hexadecapole operator can also account for the strong E4 transitions. Applications are made to the Xe and Pt isotopes.

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