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Fast rotation of the N = Z nucleus 36Ar

  • Author(s): Svensson, OE
  • Macchiavelli, AO
  • Juodagalvis, A
  • Poves, A
  • Ragnarsson, I
  • Åberg, S
  • Appelee, DE
  • Austin, RAE
  • Baktash, C
  • Ball, GG
  • Caurier, E
  • Clark, RM
  • Cromaz, M
  • Deleplanque, MA
  • Diamond, RM
  • Fallon, P
  • Furlotti, M
  • Galindo-Uribarri, A
  • Janssens, RVF
  • Lane, GJ
  • Lee, IY
  • Lipoglavsek, M
  • Nowacki, F
  • Paul, SD
  • Radford, DC
  • Sarantites, DG
  • Seweryniak, D
  • Stephens, FS
  • Tomov, V
  • Vetter, K
  • Ward, D
  • Yu, CH
  • et al.

Published Web Location

http://www.actaphys.uj.edu.pl/fulltext?series=Reg&vol=32&page=2413
No data is associated with this publication.
Abstract

A highly-deformed rotational band has been identified in the N = Z nucleus 36Ar. At high spin the band is observed to its presumed termination at Iπ = 16+, while at low spin it has been firmly linked to previously known states in 36Ar. Spins, parities, and absolute excitation energies have thus been determined throughout the band. Lifetime measurements establish a large low-spin quadrupole deformation (β2 = 0.46 ±0.03) and indicate a decreasing collectivity as the band termination is approached. With effectively complete spectroscopic information and a valence space large enough for significant collectivity to develop, yet small enough to be meaningfully approached from the shell model perspective, this rotational band in 36Ar provides many exciting opportunities to test and compare complementary models of collective motion in nuclei.

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