T=0 Pairing Correlations and Band Crossing Phenomena in N=Z Nuclei

Research output: Contribution to journalArticle

Abstract

The structure of the N=Z nuclei Zn-60, Ga-62, Ge-64 and Kr-72 has been investigated at GASP spectrometer through the S-32 + Ca-40 and Ca-40 + Ca-40 reactions at 140 and 160 MeV, respectively, using reaction channel selection with the ISIS Si-ball. The high spin states of such nuclei have been investigated searching for the four quasi-particle g(9/2) alignment. TRS calculations have been performed for the N=36, 38 and 40 Kr isotopes. In the case of Kr-72 th, four quasi-particle g(9/2) alignment is observed to be significantly delayed in rotational frequency with respect to the heavier Kr isotopes. Such a delay contradicts the predictions of mean field calculations and mag; be interpreted as the first sign of additional correlations in the T=0 pairing channel.

Details

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

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Pages (from-to)426C-433C
JournalNuclear Physics, Section A
Volume630
Issue number1-2
Publication statusPublished - 1998
Publication categoryResearch
Peer-reviewedYes

Bibliographic note

1-2