In-beam gamma-ray spectroscopy of Po-190,Po-197
2007 (English)In: European Physical Journal A, ISSN 1434-6001, E-ISSN 1434-601X, Vol. 34, no 3, 275-281 p.Article in journal (Refereed) Published
gamma-ray transitions in the neutron-deficient nuclei Po-190,Po-197 have been identified using the JUROGAM Ge detector array coupled to the RITU gas-filled separator and the GREAT spectrometer. The yrast band of Po-190 has been firmly established through gamma-gamma coincidences and extended up to a spin and parity of 14(+). It displays similar behaviour to its isotones Hg-186 and Pb-188 above the 4(+) level, thus confirming its prolate nature. In Po-197 the band built upon the 13/2(+) isomer has been extended up to a spin and parity of 33/2(+), while the non-yrast band has been observed for the first time. The behaviour of Po-197 is found to be similar to that of the nearby even-mass isotopes, which is consistent with the model in which the i(13/2) neutron is weakly coupled to the states in the even-even core.
Place, publisher, year, edition, pages
2007. Vol. 34, no 3, 275-281 p.
IdentifiersURN: urn:nbn:se:kth:diva-37300DOI: 10.1140/epja/i2007-10507-2ISI: 000252891900005ScopusID: 2-s2.0-38349039829OAI: oai:DiVA.org:kth-37300DiVA: diva2:432965