Backbending in 50Cr

Abstract

The collective yrast band and the high spin states of the nucleus 50Cr are studied using the spherical shell model and the HFB method. The two descriptions lead to nearly the same values for the relevant observables. A first backbending is predicted at I=10\hbar corresponding to a collective to non-collective transition. At I=16\hbar a second backbending occurs, associated to a configuration change that can also be interpreted as an spherical to triaxial transition.

ReVTeX v 3.0 epsf.sty, 5 pages, 5 figures included. Full Postscript version available at http://www.ft.uam.es/~gabriel/Cr50art.ps.gz

References in corpus (5)

• A Full $PF$ Shell Model Study of a~=~48 Nuclei
• Spherical Shell Model description of rotational motion
• Intrinsic vs. laboratory frame description of the deformed nucleus 48Cr
• Change of shape in the yrast sequence in 50Cr
• Non-trivial aspects of the onset of nuclear collectivity: Static moments

Cited by in corpus (16)

• The Shell Model as Unified View of Nuclear Structure
• Shell model study of the isobaric chains A=50, A=51 and A=52
• Particle number projection with effective forces
• Pairing and the structure of the pf-shell N ~ Z nuclei
• Full pf shell study of A = 47 and A = 49 nuclei
• Collectivity in the light Xenon isotopes: A shell model study
• Improvement of the extended P+QQ interaction by modifying the monopole field
• Shell-model description of N ~ Z 1f7/2 nuclei
• Application of the extended P+QQ force model to $N\approx Z$ fp shell nuclei
• Backbending in Dy isotopes within the Projected Shell Model
• Magnetic dipole excitations of ${}^{50}$Cr
• Microscopic analysis of shape-phase transitions in even-even N~90 rotating nuclei
• Band Crossing and Signature Splitting in Odd Mass fp Shell Nuclei
• Nonaxial octupole deformations in light N=Z nuclei at high spins
• Nuclear spectra from low-energy interactions
• Quasidynamical symmetries in the backbending of chromium isotopes