Lifetimes of superdeformed rotational states in {sup 36}Ar.

Journal Article · Fri Jun 01 04:00:00 EDT 2001 · Phys. Rev. C

DOI:https://doi.org/10.1103/PhysRevC.63.061301· OSTI ID:943144

Svensson, C E; Macchiavelli, A O; Juodagalvis, A; Poves, A; Ragnarsson, I; Aberg, S; Appelbe, D E; Austin, R A. E.; Ball, G C; Carpenter, M P; Caurier, E; Clark, R M; Cromaz, M; Deleplanque, M A; Diamond, R M; Fallon, P; Janssens, R V. F.; Lane, G J; Lee, I Y; Nowacki, F ; Sarantites, D G; Stephens, F S; Vetter, K; Ward, D; LBNL,; TRIUMF,

Lifetimes have been measured in a superdeformed rotational band recently identified in the N=Z nucleus {sup 36}Ar. A large low-spin quadrupole deformation ({beta}{sub 2}=0.46{+-}0.03) is confirmed and a decrease in the collectivity is observed as the high-spin band termination at I{sup {pi}}=16{sup +} is approached. Detailed comparisons of the experimental B(E2) values with the results of cranked Nilsson-Strutinsky and large-scale (s{sub 1/2}d{sub 3/2})-pf spherical shell model calculations indicate the need for a more refined treatment of transition matrix elements close to termination in the former, and the inclusion of the complete sd-pf model space in the latter description of this highly-collective rotational band.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; FOR
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 943144
• Report Number(s): ANL/PHY/JA-37825
• Journal Information: Phys. Rev. C, Journal Name: Phys. Rev. C Journal Issue: 6 ; June 2001 Vol. 63; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ARGON 36
DEFORMATION
INCLUSIONS
MATRIX ELEMENTS
QUADRUPOLES
ROTATIONAL STATES
SHELL MODELS