Beta decay of the MT=-1 nucleus 58Zn studied by selective laser ionization
A. Jokinen1 - M. Oinonen1,5 - J. Äystö1 - P. Baumann2 - P. Dendooven1 - F. Didierjean3 - V. Fedoseyev4 - A. Huck2 - Y. Jading5 - A. Knipper2 - M. Koizumi6 - U. Köster7 - J. Lettry5 - P.O. Lipas1 - W. Liu8 - V. Mishin4 - M. Ramdhane2 - H. Ravn5 - E. Roeckl8 - V. Sebastian9 - G. Walter2 - the ISOLDE Collaboration5
1 Department of Physics, University of Jyväskylä, FIN-40351 Jyväskylä, Finland
2 Institut de Recherches Subatomiques, F-67037 Strasbourg Cedex 2, France
3 Eurisys Mesures, Strasbourg-Lingolsheim, France
4 Institute of Spectroscopy, Russian Academy of Sciences, 142092 Troitsk, Russia
5 EP Division, CERN, CH-1211 Genève 23, Switzerland
6 Japan Atomic Energy Research Institute, 1233 Watanuki, Takasaki, Gunma 370-12, Japan
7 Physik-Department, Technische Universität München, D-85748 Garching, Bavaria
8 Gesellschaft für Schwerionenforschung, D-64220 Darmstadt, Germany
9 Institut für Physik, Johannes Gutenberg-Universität, D-55099 Mainz, Germany
Received: 5 June 1998 / Revised version: 24 July 1998 Communicated by D. Guerreau
Abstract
Beta decay of 58Zn has been studied for the first
time. A new laser ion-source concept has been used to produce
mass-separated sources for beta and gamma spectroscopy. The half-life of
58Zn was determined to be 86(18) ms. Comparisons are made with
previous data from charge-exchange reactions. Our Gamow-Teller strength
to the 1+ state at 1051 keV excitation in 58Cu agrees well
with the value extracted from a recent (3He,t) study.
Extensive shell-model calculations are presented.
PACS
27.40.+z 
-
29.25.Rm Radioactive ion sources -
32.80.Rm Multiphoton ionization -
21.10.Hw Spin, parity and isobaric spin -
21.60.Cs Shell model
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