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The β+-electron capture decay of 73Kr |
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| Authors: | Ch Miehé Ph Dessagne Ch Pujol G Walter B Jonson M Lindroos |
| Institution: | Institut de Recherches Subatomiques, UMR7500, CNRS-IN2P3 et Université Louis Pasteur, BP28, F-67037 Strasbourg Cedex 2, France, FR Chalmers University of Technology, G?teborg, Sweden, SE CERN, CH-1211 Geneva, Switzerland, CH |
| Abstract: | The β+– electron capture decay of 73Kr, produced at the ISOLDE CERN facility, has been studied by β-delayed proton and gamma emission. The established decay scheme involves 15 up to now unreported gamma emitting levels in 73Br. The total proton branching ratio has been measured to be 0.0025 ± 0.0003. From this work, a spin and parity 3/2− is assigned to the 73Kr ground state, on the basis of the allowed β branch to the 73Br Jπ= 1/2− ground state and the feeding of the 5/2+ level located at 286 keV in 73Br. Received: 17 September 1998 / Revised version: 25 January 1999 |
| Keywords: | PACS: 21 10 Hw Spin parity and isobaric spin – 23 20 Lv Gamma transitions and level energies – 23 40 Hc Relation with nuclear matrix elements and nuclear structure – 27 50 +e 59 ≤ A ≤ 89 |
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