np-nh bands in the N=28 isotones

2002/10/23 by A. Poves, Jorge Sánchez Solano, Poves, A. +6
Chemistry · Physics and Astronomy · #Advanced Chemical Physics Studies #FOS: Physical sciences #Inorganic Fluorides and Related Compounds #Nuclear Theory (nucl-th) #Nuclear physics research studies #nucl-th

paper · pdf · doi:10.48550/arxiv.nucl-th/0210069

arxiv created 2002/10/23 · openalex publication_date 2002/10/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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.

Related

• Quenching of N = 28 shell gap and a low-lying quadrupole mode in the vicinity of neutron-rich N = 28 isotones
• Erosion of N = 28 shell closure: Shape coexistence and monopole transition
• Influences of Z=100 and N=152 deformed shells on K^π=8^- isomers and rotational bands in N = 150 isotones
• Exotic nonaxial-octupole shapes in N=184 isotones from covariant density functional theories
• The CSM extension for description of the positive and negative parity bands in even-odd nuclei