Abstract:
A shape phase transition is demonstrated to occur in 190W by
applying the Projected Shell Model, which goes beyond the usual
mean-field approximation. Rotation alignment of neutrons in the
high-j, i13/2 orbital drives the yrast sequence of the
system, changing suddenly from prolate to oblate shape at angular
momentum 10 hbar. We propose observables to test the picture.
PDF version of the paper (Phys. Lett. B, in press)