Projected shell model study on nuclei near the N = Z line

Abstract

Study of the N ~ Z nuclei in the mass-80 region is not only interesting due to the existence of abundant nuclear structure phenomena, but also important in understanding the nucleosynthesis in the rp-process. It is not feasible to apply a conventional shell model due to the necessary involvement of the g_{9/2} sub-shell. In this paper, the projected shell model is introduced to this study. Calculations are systematically performed for the collective levels as well as the quasi-particle excitations. It is demonstrated that calculations with this truncation scheme can achieve a comparable quality as the large-scale shell model diagonalizations for 48Cr, but the present method can be applied for much heavier mass regions. While the known experimental data of the yrast bands in the N ~ Z nuclei (from Se to Ru) are reasonably described, the present calculations predict the existence of K-isomeric states, some of which lie low in energy under certain structure conditions.

6 pages, 3 figures, and 2 tables; invited talk on "Nuclear Structure with Large Gamma-Arrays: Status and Perspectives"; to appear in Euro. Phys. J. A

References in corpus (3)

• The endpoint of the rp process on accreting neutron stars
• Anomalous rotational-alignment in N=Z nuclei and residual neutron-proton interaction
• Projected shell model study of odd-odd f-p-g shell proton-rich nuclei

Cited by in corpus (12)

• Overview of Neutron-Proton Pairing
• Description of rotating $N=Z$ nuclei in terms of isovector pairing
• Microscopic description of oblate-prolate shape mixing in proton-rich Se isotopes
• Nuclear structure of the exotic mass region along the rp process path
• Structure of upper g9/2-shell nuclei and shape effect in the 94Ag isomeric states
• Ab initio computations of strongly deformed nuclei around ${}^{80}$Zr
• Structure of isomeric states in 66As and 67As
• Isoscalar and isovector neutron-proton pairing
• Unique features of structure in an odd-proton $N\approx Z$ nucleus ${}^{69}$As
• Shell model for heavy nuclei and its application in nuclear astrophysics
• Searching for high-$K$ isomers in the proton-rich $A\sim 80$ mass region
• States of the ${}^{12}$C Nucleus in the Toroidal Configuration