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Isomeric states in180Os |
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| Authors: | Ts. Venkova T. Morek G. V. Martí H. Schnare A. Krämer-Flecken W. Gast A. Georgiev G. Hebbinghaus R. M. Lieder G. Sletten K. M. Spohr K. H. Maier W. Urban |
| Affiliation: | 1. Institut für Kernphysik, Forschungszentrum KFA Jülich, Postfach 19 13, W-5170, Jülich, Federal Republic of Germany 2. Institute of Nuclear Research and Nuclear Energy, Boul. Trakia 72, 1184, Sofia, Bulgaria 3. Institute of Experimental Nuclear Physics, University of Warsaw, ul. Hoza 69, Warsaw, Poland 4. Departamento de Fisica, CNEA, Av. del Libertador, 8250 (1429), Buenos Aires, Argentina 5. Physics Department, State University of New York, 11794-3800, Stony Brook, NY, USA 6. Tandem Accelerator Laboratory Ris?, Niels Bohr Institute, DK-4000, Roskilde, Denmark 7. Hahn-Meitner-Institut Berlin GmbH, Glienicker Strasse 100, W-1000, Berlin 39, Federal Republic of Germany 8. Schuster Laboratory, University of Manchester, M13 9PL, Manchester, UK |
| Abstract: | Two new isomers have been observed in180Os. A high-K isomer withI, K ≧20 and a half-life ofT 1/2=12+4 ns have been established. It deexcites via two transitions into the 18+ level of the yrare band indicating an unusually smallK-hindrance factor. Evidence for an isomer withI, K>16 and a half-life ofT 1/2=41±10 ns was found. A half-life of 17±3 ns was measured for the previously known 7? state at 1862 keV. The decay scheme of the previously known 7? isomer at 1928 keV has been extended and a revised version is presented. |
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