Shape coexistence and evolution in neutron-deficient krypton isotopes
Abstract
Total Routhian Surface (TRS) calculations have been performed to investigate shape coexistence and evolution in neutron-deficient krypton isotopes Kr. The ground-state shape is found to change from oblate in Kr to prolate in Kr, in agreement with experimental data. Quadrupole deformations of the ground states and coexisting states as well as excitation energies of the latter are also well reproduced. While the general agreement between calculated moments of inertia and those deduced from observed spectra confirms the prolate nature of the low-lying yrast states of all three isotopes (except the ground state of Kr), the deviation at low spins suggests significant shape mixing. The role of triaxiality in describing shape coexistence and evolution in these nuclei is finally discussed.
Keywords
Cite
@article{arxiv.1503.09013,
title = {Shape coexistence and evolution in neutron-deficient krypton isotopes},
author = {Z. J. Bai and X. M. Fu and C. F. Jiao and F. R. Xu},
journal= {arXiv preprint arXiv:1503.09013},
year = {2015}
}