Alignment delays in the N = Z nuclei Kr-72, Sr-76, and Zr-80
2001 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 8713, no 13Article in journal (Refereed) Published
The ground state rotational bands of the N = Z nuclei Kr-72, Sr-76, and Zr-80 have been extended into the angular momentum region where rotation alignment of particles is normally expected. By measuring the moments of inertia of these bands we have observed a consistent increase in the rotational frequency required to start pair breaking, when compared to neighboring nuclei. Kr-72 shows the most marked effect. It has been widely suggested that these delayed alignments arise from np-pairing correlations. However, alignment frequencies are very sensitive to shape degrees of freedom and normal pairing, so the new experimental observations are still open to interpretation.
Place, publisher, year, edition, pages
2001. Vol. 8713, no 13
rotational bands, n=z, zirconium, model, t=0
IdentifiersURN: urn:nbn:se:kth:diva-20971DOI: 10.1103/PhysRevLett.87.132501ISI: 000171219500008OAI: oai:DiVA.org:kth-20971DiVA: diva2:339668
QC 201005252010-08-102010-08-10Bibliographically approved