Half-life measurements of proton-rich 78Kr fragments

M. J. López Jiménez, B. Blank, M. Chartier, S. Czajkowski, P. Dessagne, G. de France, J. Giovinazzo, D. Karamanis, M. Lewitowicz, V. Maslov, C. Miehé, P. H. Regan, M. Stanoiu, and M. Wiescher
Phys. Rev. C 66, 025803 – Published 27 August 2002
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Abstract

The β+ decay half-lives of 22 neutron-deficient nuclei in the cobalt-to-krypton region have been measured following the fragmentation of a primary 78Kr beam at an energy of 73 MeV per nucleon. The half-lives of the Tz=1 nuclei 62Ge, 64As, and 66Se are determined for the first time with values of (129±35) ms, 187+43ms, and (33±12) ms, respectively. The impact of these results on the nucleosynthesis and time scale of the astrophysical rapid proton-capture process are discussed.

  • Received 12 April 2002

DOI:https://doi.org/10.1103/PhysRevC.66.025803

©2002 American Physical Society

Authors & Affiliations

M. J. López Jiménez1, B. Blank1, M. Chartier1, S. Czajkowski1, P. Dessagne2, G. de France3, J. Giovinazzo1, D. Karamanis1, M. Lewitowicz3, V. Maslov4, C. Miehé2, P. H. Regan5, M. Stanoiu3, and M. Wiescher6

  • 1Centre d’Etudes Nucléaires de Bordeaux-Gradignan, Le Haut-Vigneau, Boîte Postale 120, F-33175 Gradignan, France
  • 2Institut de Recherches Subatomiques, 22 rue du Loess, Boîte Postale 28, F-67037 Strasbourg Cedex 2, France
  • 3Grand Accélérateur National d’Ions Lourds, Boîte Postale 5027, F-14076 Caen Cedex, France
  • 4Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, 141980 Dubna, Russia
  • 5Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
  • 6Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556

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Vol. 66, Iss. 2 — August 2002

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