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Open Access Publications from the University of California

Lifetimes of high-spin states in76Kr

  • Author(s): Valiente-Dobón, JJ;
  • Svensson, CE;
  • O'Leary, CD;
  • Ragnarsson, I;
  • Andreoiu, C;
  • Austin, RAE;
  • Carpenter, MP;
  • Dashdorj, D;
  • Finlay, P;
  • Freeman, SJ;
  • Garrett, PE;
  • Görgen, A;
  • Greene, J;
  • Grinyer, GF;
  • Hyland, B;
  • Jenkins, D;
  • Johnston-Theasby, F;
  • Joshi, P;
  • Kelsall, NS;
  • Macchiavelli, AO;
  • Moore, F;
  • Mukherjee, G;
  • Phillips, AA;
  • Reviol, W;
  • Sarantites, D;
  • Schumaker, MA;
  • Seweryniak, D;
  • Smith, MB;
  • Wadsworth, R;
  • Ward, D
  • et al.

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High-spin states in 3676Kr40 have been populated in the 40Ca(40Ca,4p)76Kr fusion-evaporation reaction at a beam energy of 165 MeV, and studied using the GAMMASPHERE and MICROBALL multi-detector arrays. The ground-state band and two signature-split negative-parity bands of 76Kr have been extended to ∼30hℏ. Lifetime measurements using the Doppler-shift attenuation method indicate that the transition quadrupole moment of these three bands decrease as they approach their maximum-spin states.

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