Collective rotational motion in the N=Z nucleus 36Ar

C. E. Svensson, A. O. Macchiavelli, A. Juodagalvis, A. Poves, I. Ragnarsson, S. Åberg, D. E. Appelbe, R. A.E. Austin, C. Baktash, G. C. Ball, M. P. Carpenter, E. Caurier, R. M. Clark, M. Cromaz, M. A. Deleplanque, R. M. Diamond, P. Fallon, M. Furlotti, A. Galindo-Uribarri, R. V.F. JanssensG. J. Lane, I. Y. Lee, M. Lipoglavsek, F. Nowacki, S. D. Paul, D. C. Radford, D. G. Sarantites, D. Seweryniak, F. S. Stephens, V. Tomov, K. Vetter, D. Ward, C. H. Yu

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

Sammanfattning

A superdeformed rotational band has been identified in the N = Z nucleus 36Ar, firmly linked to known low-spin states, and observed to its high-spin termination at Iπ = 16+. Lifetime measurements by the Doppler shift attenuation method establish a large low-spin deformation (β2 ≈ 0.46) and a decrease in the collectivity as the band approaches termination. Comparisons with cranked Nilsson-Strutinsky and large-scale spherical shell model calculations lead to a consistent description of the band based on a configuration in which four particles are promoted to the pf shell. With two major shells active for both protons and neutrons, yet a valence space dimension small enough to be approached from the shell model perspective, this band offers an excellent opportunity to investigate the microscopic structure of collective rotational motion in nuclei.

Originalspråkengelska
Sidor (från-till)1-11
Antal sidor11
TidskriftNuclear Physics A
Volym682
Nummer1-4
DOI
StatusPublished - 2001 feb. 12

Ämnesklassifikation (UKÄ)

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