Reinvestigation of the collective band structures in odd-odd Pm-138 nucleus
2015 (English)In: European Physical Journal A, ISSN 1434-6001, E-ISSN 1434-601X, Vol. 51, no 5, 60Article in journal (Refereed) Published
The high-spin states in the odd-odd Pm-138 nucleus have been reinvestigated via the Te-124(F-19, 5n) reaction at the beam energy of 103MeV. Most of the known transitions and levels are confirmed. A number of bands are revised and one new band has been established. For the yrast pi h(11/2) circle times nu h(11/2) band based on 8(+) state, no evidence supporting the occurence of signature inversion is found. The experimental and theoretical B(M1)/B(E2) ratios have been calculated for band (2), which support the pi g(7/2)5/2(+) circle times nu h(11/2)9/2(-) Nilsson configuration assignment. Four bands with Delta I = 2 transitions are tentatively assigned as doubly decoupled bands. The other three bands are proposed as oblate-triaxial bands. The possible configuration assignments for these bands are also discussed under the calculations of total Routhian surface and particle-rotor model.
Place, publisher, year, edition, pages
2015. Vol. 51, no 5, 60
High-Spin States, Rotational Bands, Shape Coexistence, Ba-132, Pr-134
IdentifiersURN: urn:nbn:se:kth:diva-169255DOI: 10.1140/epja/i2015-15060-9ISI: 000354902800001ScopusID: 2-s2.0-84930001995OAI: oai:DiVA.org:kth-169255DiVA: diva2:821966
QC 201506162015-06-162015-06-122015-07-10Bibliographically approved