Pronounced Shape Change Induced by Quasiparticle Alignment

Research output: Contribution to journalArticle


Mean lifetimes of high-spin states of Kr-74 have been determined using the Doppler-shift attenuation method. The high-spin states were studied using the Ca-40(Ca-40, alpha 2p) reaction at a beam energy of 160 MeV with the GASP gamma-ray spectrometer. The ground-state band and negative parity side band show the presence of three different configurations in terms of transitional quadrupole deformations. A dramatic shape change was found along the ground-state band after the S-band crossing. The deduced quadrupole deformation changes are well reproduced by cranked Woods-Saxon Strutinsky calculations.


  • A. Algora
  • G. de Angelis
  • F. Brandolini
  • R. Wyss
  • A. Gadea
  • E. Farnea
  • W. Gelletly
  • S. Lunardi
  • D. Bazzacco
  • A. Aprahamian
  • F. Becker
  • P. G. Bizzeti
  • A. Bizzeti-Sona
  • D. de Acuna
  • M. De Poli
  • J. Eberth
  • D. Foltescu
  • S. M. Lenzi
  • T. Martinez
  • D. R. Napoli
  • P. Pavan
  • C. M. Petrache
  • C. R. Alvarez
  • B. Rubio
  • S. Skoda
  • P. Spolaore
  • R. Menegazzo
  • H. G. Thomas
  • C. A. Ur
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Article number031303(R)
JournalPhysical Review C (Nuclear Physics)
Issue number3
Publication statusPublished - 2000
Publication categoryResearch

Bibliographic note