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Probing the collective degrees of freedom at the proton drip line in the extremely neutron deficient 172Hg
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Physics.
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Physics.ORCID iD: 0000-0003-1771-2656
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Physics.
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Physics.
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2011 (English)In: AIP Conf. Proc., 2011, 29-34 p.Conference paper (Refereed)
Abstract [en]

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
Keyword [en]
172Hg, JUROGAM and GREAT spectrometers, QRPA calculations, RITU gas-filled separator, TRS calculations
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-150659DOI: 10.1063/1.3664145ISI: 000301980000005ScopusID: 2-s2.0-84855361744ISBN: 9780735409835OAI: diva2:746257
4th International Conference on Proton Emitting Nuclei and Related Topics, PROCON2011, 6-10 June 2011, Bordeaux, France

QC 20140912

Available from: 2014-09-12 Created: 2014-09-08 Last updated: 2014-09-12Bibliographically approved

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