Oblately deformed isomeric proton-emitting state in Lu-151
2015 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 91, no 4, 044322Article in journal (Refereed) Published
Gamma rays from excited states feeding a proton-emitting isomeric-state in Lu-151 have been observed for the first time. Comparison with state-of-the-art nonadiabatic quasiparticle calculations indicates an oblately deformed, 3/2(+) proton-emitting state with a quadrupole deformation of beta(2) = -0.11. The calculations suggest an increase in quadrupole deformation, to beta(2) = -0.18, with increasing spin which is understood in terms of the mixing of Nilsson states at the Fermi surface. It is also shown that the proton decay half-life is consistent with that from a 3/2(+) state with a quadrupole deformation of beta(2) = -0.12.
Place, publisher, year, edition, pages
2015. Vol. 91, no 4, 044322
IdentifiersURN: urn:nbn:se:kth:diva-171695DOI: 10.1103/PhysRevC.91.044322ISI: 000353450300001ScopusID: 2-s2.0-84928957923OAI: oai:DiVA.org:kth-171695DiVA: diva2:844721
FunderEU, FP7, Seventh Framework Programme, 262010
QC 201508072015-08-072015-08-052015-08-07Bibliographically approved