Rotation-driven prolate-to-oblate shape phase transition in 190W: A projected shell model study

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, i_{13/2} orbital drives the yrast sequence of the system, changing suddenly from prolate to oblate shape at angular momentum 10$\hslash$. We propose observables to test the picture.

9 pages, 3 figures, accepted for publication in Phys. Lett. B

References in corpus (4)

• Phase Transitions in Finite Nuclei and the Integer Nucleon Number Problem
• E(5), X(5), and Prolate to Oblate Shape Phase Transitions in Relativistic Hartree Bogoliubov Theory
• Phase transition in exotic nuclei along the $N=Z$ line
• Microscopic analysis of shape-phase transitions in even-even N~90 rotating nuclei

Cited by in corpus (5)

• Role of triaxiality in the ground state shape of neutron rich Yb, Hf, W, Os, and Pt isotopes
• Analytic predictions for nuclear shapes, the prolate dominance and the prolate-oblate shape transition in the proxy-SU(3) model
• The proxy-SU(3) symmetry in atomic nuclei
• Shape phase transition in the odd Sm nuclei: effective order parameter and odd-even effect
• Tilting instability in negative-γrotating nuclei