Abstract
Using the40Ca(4.2 MeV/u) +60Ni reaction and on-line mass separation, the decay properties of 9646 Pd50 were reinvestigated. From a comparison of experimental and theoreticalβ +/(EC +β +) probability ratios, theQ EC value was deduced to be 3,450 ± 150 keV. The strength was determined for four 0+→1+ Gamow-Teller beta transitions and found to be quenched as compared to predictions of the single-particle shell model. For96Pd and94Ru the sources of this quenching are discussed.
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On leave of absence from Institute of Experimental Physics, Warsaw University, PL-00-681 Warsaw, Poland
On leave of absence from Department of Physics, Chalmers University of Technology, S-41296 Göteborg, Sweden
The authors would like to thank C. Bruske, K. Burkard and W. Hüller for operating the on-line mass separator. Enlightening discussions with Profs. J. Blomqvist and A. Richter are gratefully acknowledged. The authors would also like to thank I.S. Towner for making the results of his calculations available prior to publication.