Description of superdeformed bands in light N=Z nuclei using the cranked HFB method

Abstract

Superdeformed states in light $N=Z$ nuclei are studied by means of the self-consistent cranking calculation (i.e., the P + QQ model based on the cranked Hartree-Fock-Bogoliubov method). Analyses are given for two typical cases of superdeformed bands in the $A\simeq 40$ mass region, that is, bands where backbending is absent (${}^{40}$Ca) and present (${}^{36}$Ar). Investigations are carried out, particularly for the following points: cross-shell excitations in the sd and pf shells; the role of the g${}_{9/2}$ and d${}_{5/2}$ orbitals; the effect of the nuclear pairing; and the interplay between triaxiality and band termination.

arXiv comment17 pages, 18 figures, accepted in Phys. Rev. C

References in corpus (6)

• Nuclear Ground-State Masses and Deformations
• Beyond-mean-field-model analysis of low-spin normal-deformed and superdeformed collective states of S32, Ar36, Ar38 and Ca40
• Coexistence of spherical states with deformed and superdeformed bands in doubly magic 40-Ca; A shell model challenge
• Cranked Skyrme-Hartree-Fock calculation for superdeformed and hyperdeformed rotational bands in N=Z nuclei from 32S to 48Cr
• A Shell Model Description of the Decay Out of the Super-Deformed Band of 36Ar
• Superdeformed Band in ^{36}Ar Described by Projected Shell Model

Cited by in corpus (2)

• Superdeformation in Asymmetric N$>$Z Nucleus ${}^{40}$Ar
• Multiphonon structure of high-spin states in ${}^{40}$Ca, ${}^{90}$Zr, and ${}^{208}$Pb