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The Gamow-Teller beta decay of neutron-deficient even isotopes of tin

  • Nuclear Structure and Spectroscopy
  • Published:
Zeitschrift für Physik A Atomic Nuclei

Abstract

With the use of the58Ni+50Cr fusion-evaporation reaction and chemically selective on-line mass separation, the EC/β + decay of104Sn was studied byγ-ray and conversionelectron spectroscopy. In the course of these studies, a new 15.7-s isomeric state of104In was observed. Reinvestigation of theβ-decays of the two heavier even isotopes of tin, produced in the58Ni+58Ni reaction and mass separated without chemical discrimination, brought new information on the decay of106Sn and108Sn. The QEC values of104Sn,106Sn and108Sn were determined to be 4550 +300−250 keV, 3200±100 keV and < 2270 keV, respectively. In the data analysis, the emphasis is put on the identification of the 0+ → 1+ Gamow-Tellerβ transitions and determination of their strengths. For104−110Sn, the total Gamow-Teller strengths are measured to be 20% to 30% of that predicted by the single-particle shell model with the inclusion of pairing correlations and core polarization. Predictions of the decay properties of the as yet unobserved102Sn and100Sn are made.

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Authors and Affiliations

  1. GSI Darmstadt, Federal Republic of Germany

    R. Barden, R. Kirchner, O. Klepper, G. -E. Rathke, E. Roeckl, D. Schardt & J. Zylicz

  2. Institute of Experimental Physics, University of Warsaw, Poland

    A. Plochocki, K. Rykaczewski & J. Zylicz

  3. Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, 60439, Argonne, IL, USA

    G. -E. Rathke

Authors
  1. R. Barden
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  2. R. Kirchner
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  3. O. Klepper
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  4. A. Plochocki
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  5. G. -E. Rathke
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  6. E. Roeckl
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  7. K. Rykaczewski
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  8. D. Schardt
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  9. J. Zylicz
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Additional information

This work is part of the Ph.D. thesis of G.-E. Rathke

The authors acknowledge with pleasure the excellent collaboration with C. Bruske, D. Boyd, K. Burkard and W. Hüller, as well as with the UNILAC operating crew, during the experiments at the GSI On-Line Mass Separator. The authors from Warsaw would like to thank GSI for making their participation in these experiments possible, they also acknowledge the support from the Polish Ministry of Science and High Education under the contract CPBP 01.09.II.1 b.2.03.

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Barden, R., Kirchner, R., Klepper, O. et al. The Gamow-Teller beta decay of neutron-deficient even isotopes of tin. Z. Physik A - Atomic Nuclei 329, 319–330 (1988). https://doi.org/10.1007/BF01290237

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  • DOI: https://doi.org/10.1007/BF01290237

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