In-beam gamma-ray spectroscopy of Po-190: First observation of a low-lying prolate band in Po isotopes
2003 (English)In: European Physical Journal A, ISSN 1434-6001, E-ISSN 1434-601X, Vol. 17, no 2, 167-171 p.Article in journal (Refereed) Published
Gamma rays from excited states of Po-190 have been observed using I the Jurosphere Ge-detector array coupled to the RITU gas-filled separator. They were associated with a collective band which from spin 4h onwards resembles the prolate rotational bands known in the isotones Pb-188 and Hg-186. This indicates that in Po-190 the prolate configuration becomes yrast above I = 2h. The experimental results are interpreted in a two-band mixing calculation and are in agreement with a-decay data and potential energy surface calculations.
Place, publisher, year, edition, pages
2003. Vol. 17, no 2, 167-171 p.
alpha-decay, shape coexistence, polonium isotopes, intruder states, nuclei, onset, collectivity, deformation, region, pb-186
IdentifiersURN: urn:nbn:se:kth:diva-22680DOI: 10.1140/epja/i2003-10002-xISI: 000184224900003OAI: oai:DiVA.org:kth-22680DiVA: diva2:341378
QC 201005252010-08-102010-08-10Bibliographically approved