Microscopic aspects of $\gamma$-softness in atomic nuclei
Abstract
The microscopic origin of the -softness (fluctuations in the triaxiality parameter of the nuclear shape) observed in atomic nuclei is studied in the framework of the triaxial projected shell model approach, which is based on the deformed mean-field picture with multi-quasiparticle configuration space. It is demonstrated that the coupling to quasiparticle excitations drives the system from a -rigid to a -soft pattern. As an illustrative example for a -soft nucleus, a detailed study has been performed for the Ru nucleus. The experimental energies and a large sample of measured matrix elements available for this nucleus are reproduced quite accurately. The shape invariant analysis of the calculated matrix elements elucidates the -soft nature of Ru.
Keywords
Cite
@article{arxiv.2209.04718,
title = {Microscopic aspects of $\gamma$-softness in atomic nuclei},
author = {Nazira Nazir and S. Jehangir and S. P. Rouoof and G. H. Bhat and J. A. Sheikh and N. Rather and S. Frauendorf},
journal= {arXiv preprint arXiv:2209.04718},
year = {2023}
}