The N=28 shell closure; from N=Z to the neutron drip line
Nuclear Theory
2009-11-10 v2
Abstract
The evolution of the N=28 neutron shell closure is studied in the N=28 isotones from neutron drip line's Mg to N=Z doubly magic Ni. It is found that the N=28 closure vanishes at Z=12 in favor of a deformed ground state. For Z=14 and Z=16 closed shell and intruder configurations are almost degenerate, leading to highly mixed ground states and to very low lying excited 0 states. For Z20 the intruder states are always above the closed shell ground states. We examine their structure and their possible existence as collective yrare bands of well defined particle-hole character.
Keywords
Cite
@article{arxiv.nucl-th/0403080,
title = {The N=28 shell closure; from N=Z to the neutron drip line},
author = {Etienne Caurier and Frederic Nowacki and Alfredo Poves},
journal= {arXiv preprint arXiv:nucl-th/0403080},
year = {2009}
}