Evidence for octupole correlations in Ba-124,Ba-125
2005 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 72, no 6Article in journal (Refereed) Published
The gamma decay of the nuclei Ba-124,Ba-125 has been investigated by means of the EUROBALL spectrometer, coupled to the DIAMANT array of charged-particle detectors, using the reaction Ni-64 + Ni-64 at E-beam=255 and 261 MeV. In the nucleus Ba-125 six new E1 transitions have been found to link opposite-parity bands currently interpreted as nu d(5/2)(+g(7/2)),nu h(11/2) structures. The previously unknown J(pi) = 3(-) level in the nucleus Ba-124 has also been identified; its excitation energy is accurately reproduced by a microscopic calculation including octupole correlations. Both issues are bolstered by sizable B(E1)/B(E2) ratios.
Place, publisher, year, edition, pages
2005. Vol. 72, no 6
gamma-ray spectroscopy, high-spin states, nuclei, ba-126, spectrometer, euroball, detector, clover
IdentifiersURN: urn:nbn:se:kth:diva-15294DOI: 10.1103/PhysRevC.72.064315ISI: 000234337400028ScopusID: 2-s2.0-33244472588OAI: oai:DiVA.org:kth-15294DiVA: diva2:333335
QC 201005252010-08-052010-08-05Bibliographically approved