Shell model study of T =0 states for 96Cd by the nucleon-pair approximation
Abstract
In this paper we study the nucleon-pair approximation for T =0 states of 96Cd in the 1 p1 /21 p3 /20 f5 /20 g9 /2 shell with the JUN45 interaction. The lowest seniority scheme and the isoscalar spin-one pair approximation are not enough to describe the states. The isoscalar spin-aligned pair approximation is reasonably good for the yrast 2+, 4+, 6+, 12+, 14+, and 16+ states as pointed out previously. Not only the yrast positive-parity states but also nonyrast states and negative-parity states are well described by both the isovector pair approximation and the isoscalar pair approximation. We calculate overlaps between nucleon-pair basis states and shell-model wave functions. The largest overlaps and the corresponding nucleon-pair basis states are presented. We find that isovector spin-zero pairs, isovector spin-two pairs, and isoscalar spin-aligned pairs are the dominant building blocks in these states.
- Publication:
-
Physical Review C
- Pub Date:
- August 2016
- DOI:
- 10.1103/PhysRevC.94.024336
- Bibcode:
- 2016PhRvC..94b4336F