Coulomb shifts and shape changes in the mass 70 region
2007 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 75, no 6Article in journal (Refereed) Published
The technique of recoil beta tagging has been developed which allows prompt gamma decays in nuclei from excited states to be correlated with electrons from their subsequent short-lived beta decay. This technique is ideal for studying nuclei very far from stability and improves in sensitivity for very short-lived decays and for high decay Q-values. The method has allowed excited states in Y-78 to be observed for the first time, as well as an extension in the knowledge of T=1 states in Rb-74. From this new information it has been possible to compare Coulomb energy differences (CED) between T=1 states in Br-70/Se-70, Rb-74/Kr-74, and Y-78/Sr-78. The A=70 CED exhibit an anomalous behavior which is inconsistent with all other known CED. This behavior may be accounted for qualitatively in terms of small variations in the Coulomb energy arising from shape changes.
Place, publisher, year, edition, pages
2007. Vol. 75, no 6
odd-odd, nuclear-structure, rotational bands, states, se-70, identification, spectroscopy, coexistence, kr-74, decay
IdentifiersURN: urn:nbn:se:kth:diva-16741DOI: 10.1103/PhysRevC.75.061301ISI: 000247625200003ScopusID: 2-s2.0-34547333564OAI: oai:DiVA.org:kth-16741DiVA: diva2:334784
QC 201005252010-08-052010-08-05Bibliographically approved