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The study of prompt and delayed muon induced fission |
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| Authors: | P. David H. Hänscheid J. Hartfiel H. Janszen T. Mayer-Kuckuk R. von Mutius F. Risse Ch. F. G. Rösel W. Schrieder C. Petitjean H. W. Reist S. M. Polikanov J. Konijn C. T. A. M. de Laat A. Taal T. Krogulski T. Johansson G. Tibell J. F. M. d'Achard van Enschut J. P. Theobald N. Trautmann C. Gugler L. A. Schaller L. Schellenberg |
| Affiliation: | 1. Institut für Strahlen- und Kernphysik, Universit?t Bonn, Federal Republic of Germany 5. Paul Scherrer Institute (PSI), formerly SIN, Villigen, Switzerland 6. Gesellschaft für Schwerionenforschung (GSI), Darmstadt, Federal Republic of Germany 7. NIKHEF-K, Amsterdam, The Netherlands 8. Department of Mathematics and Nature, University of Warsaw, Bialystok, Poland 9. Department of Radiation Sciences, S-75121, Uppsala, Sweden 10. Gustaf Werner Institute, Uppsala University, Sweden 12. Laboratorium voor Technische Natuurkunde, Technische Universiteit Delft, The Netherlands 13. Philips Laboratorium Eindhoven, The Netherlands 15. Institut für Kernphysik, Technische Hochschule Darmstadt, Federal Republic of Germany 16. Institut für Kernchemie, Universit?t Mainz, Federal Republic of Germany 17. Institut de Physique, Université de Fribourg, Switzerland |
| Abstract: | The mean life times of negative muons bound to actinide nuclei have been measured by detecting the time difference between a stopped muon and the arrival of fragments from delayed fission after muon capture. The deduced capture ratesΛ c are 1.392(4)·107/s for237Np, 1.290(7)·107/s for242Pu and 1.240(7)·107/s for244Pu. The results are compared with published data for the fission and the neutron decay channels and for the electron decay of the bound muon. Including a former measurement ofΛ c for239Pu, an isotopic dependence of the muon capture rates in the Pu isotopes is clearly observed. |
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