Shape coexistence in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow/><mml:mn>180</mml:mn></mml:msup></mml:math>Hg studied through the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>β</mml:mi></mml:math>decay of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow/><mml:mn>180</mml:mn></mml:msup></mml:math>Tl
J. ElseviersInstituut voor Kern-en Stralingsfysica, K.U. Leuven, University of Leuven, BE-3001 Leuven, BelgiumA. N. AndreyevInstituut voor Kern-en Stralingsfysica, K.U. Leuven, University of Leuven, BE-3001 Leuven, BelgiumS. AntalicDepartment of Nuclear Physics and Biophysics, Comenius University, SK-84248 Bratislava, SlovakiaA. E. BarzakhPetersburg Nuclear Physics Institute, RU-188350 Gatchina, RussiaN. BreeInstituut voor Kern-en Stralingsfysica, K.U. Leuven, University of Leuven, BE-3001 Leuven, BelgiumT. E. CocoliosISOLDE,CERN, CH-1211 Geneve 23, SwitzerlandV. F. ComasGesellschaft fr Schwerionenforschung, Planckstrasse 1, DE-64291 Darmstadt, GermanyJ. DirikenInstituut voor Kern-en Stralingsfysica, K.U. Leuven, University of Leuven, BE-3001 Leuven, BelgiumД. В. ФедоровPetersburg Nuclear Physics Institute, RU-188350 Gatchina, RussiaV. N. FedosseyevEN Department, CERN, CH-1211 Geneve 23, SwitzerlandS. FranchooInstitut de Physique Nuclaire, IN2P3-CNRS/Universit Paris-Sud, FR-91406 Orsay Cedex, FranceJ. A. HerediaGesellschaft fr Schwerionenforschung, Planckstrasse 1, DE-64291 Darmstadt, GermanyM. HuýseInstituut voor Kern-en Stralingsfysica, K.U. Leuven, University of Leuven, BE-3001 Leuven, BelgiumO. IvanovInstituut voor Kern-en Stralingsfysica, K.U. Leuven, University of Leuven, BE-3001 Leuven, BelgiumU. KösterInstitut Laue Langevin, 6 rue Jules Horowitz, FR-38042 Grenoble CedexB. A. MarshEN Department, CERN, CH-1211 Geneve 23, SwitzerlandR. D. PageDepartment of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, UKN. PatronisDepartment of Physics, University of Ioannina, GR-45110 Ioannina, GreeceM. D. SeliverstovISOLDE,CERN, CH-1211 Geneve 23, SwitzerlandI. TsekhanovichCENBG, CNRS IN2P3, Univ. Bordeaux I, FR-33175 Gradignan, FranceP. Van den BerghInstituut voor Kern-en Stralingsfysica, K.U. Leuven, University of Leuven, BE-3001 Leuven, BelgiumJ. Van de WalleISOLDE,CERN, CH-1211 Geneve 23, SwitzerlandP. Van DuppenInstituut voor Kern-en Stralingsfysica, K.U. Leuven, University of Leuven, BE-3001 Leuven, BelgiumM. VenhartInstituut voor Kern-en Stralingsfysica, K.U. Leuven, University of Leuven, BE-3001 Leuven, BelgiumS. VermoteDepartment of Physics and Astronomy, University of Gent, Proeftuinstraat 86, BE-9000 Gent, BelgiumM. VeselskýSlovak Academy of Sciences, SK-84511 Bratislava, SlovakiaC. WagemansDepartment of Physics and Astronomy, University of Gent, Proeftuinstraat 86, BE-9000 Gent, Belgium
ABI
Annotatsiya
The ${\ensuremath{\beta}}^{+}$/EC decay of ${}^{180}$Tl and excited states in the daughter nucleus ${}^{180}$Hg have been investigated at the CERN On-Line Isotope Mass Separator (ISOLDE) facility. Many new low-lying energy levels were observed in ${}^{180}$Hg, of which the most significant are the 0${}_{2}^{+}$ at 419.6 keV and the 2${}_{2}^{+}$ at 601.3 keV. The former is the bandhead of an excited band in ${}^{180}$Hg assumed originally to be of prolate nature. From the $\ensuremath{\beta}$ feeding to the different states in ${}^{180}$Hg, the ground-state spin of ${}^{180}$Tl was deduced to be (4${}^{\ensuremath{-}}$,5${}^{\ensuremath{-}}$).
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