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np-nh bands in the N=28 isotones

A. Poves·J. Sanchez Solano·E. Caurier·F. Nowacki
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Abstract

The existence of n-particle n-hole deformed yrare bands in the N=28 isotones is explored using full pf-shell diagonalizations and the Lanczos Strength Function method. We find different 2p-2h and 4p-4h collective bands that, when allowed to mix, more often disappear. Only the 2p-2h yrare band in Cr-52 and the 4p-4h yrare band in Ni-56 survive, and only in this latter case, due to the reduced density of 2p-2h states, can the band be seen as a gamma-cascade.

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A. Poves, J. Sanchez Solano, E. Caurier, F. Nowacki. 2002-10-23. np-nh bands in the N=28 isotones. https://arxiv.org/abs/nucl-th/0210069

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