Probing the collective degrees of freedom at the proton drip line in the extremely neutron deficient 172Hg
2011 (English)In: AIP Conf. Proc., 2011, 29-34 p.Conference paper (Refereed)
Excited states in the extremely neutron-deficient isotope 172Hg have been established for the first time. The 96Ru( 78Kr,2n) reaction was employed to populate excited states in 172Hg with a cross section σ ≈ 15 nb. The highly selective Recoil-Decay Tagging (RDT) technique was used to obtain clean in-beam γ-ray spectra for 172Hg. The yrast ground-state band has tentatively been established up to I=6h̄. The data have been interpreted within the framework of total Routhian surface and quasiparticle random phase approximation calculations. In addition to the well-known features of shape coexistence previously observed in light Hg isotopes, the systematic trends in the energy of the yrast 2 + and 4 + states in the chain of Hg isotopes indicate a pronounced vibrational collectivity which is reduced in strength, but at the same time shows a higher degree of harmonicity, as the neutron number decreases below the neutron midshell.
Place, publisher, year, edition, pages
2011. 29-34 p.
, AIP Conference Proceedings, ISSN 0094-243X ; 1409
172Hg, JUROGAM and GREAT spectrometers, QRPA calculations, RITU gas-filled separator, TRS calculations
IdentifiersURN: urn:nbn:se:kth:diva-150659DOI: 10.1063/1.3664145ISI: 000301980000005ScopusID: 2-s2.0-84855361744ISBN: 9780735409835OAI: oai:DiVA.org:kth-150659DiVA: diva2:746257
4th International Conference on Proton Emitting Nuclei and Related Topics, PROCON2011, 6-10 June 2011, Bordeaux, France
QC 201409122014-09-122014-09-082014-09-12Bibliographically approved