Pronounced Shape Change Induced by Quasiparticle Alignment

Summary, in English

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.

• Author: A. Algora; G. de Angelis; F. Brandolini; R. Wyss; A. Gadea; E. Farnea; W. Gelletly; S. Lunardi; D. Bazzacco; Claes Fahlander; 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; Dirk Rudolph; B. Rubio; S. Skoda; P. Spolaore; R. Menegazzo; H. G. Thomas; C. A. Ur
• Department/s: Nuclear physics
• Publishing year: 2000
• Language: English
• Publication/Series: Physical Review C (Nuclear Physics)
• Volume: 61
• Issue: 3
• Links: http://prc.aps.org/abstract/PRC/v61/i3/e031303; http://dx.doi.org/10.1103/PhysRevC.61.031303
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Status: Published
• Research group: Nuclear Structure
• ISBN/ISSN/Other: ISSN: 0556-2813