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Study of muon catalyzed dd-fusion in HD gas

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Abstract

The results of an experiment on muon catalyzed dd-fussion in HD gas are presented. The experiment was performed at the muon beam of PSI using a high-pressure ionization chamber filled with pure HD-gas of low D2 concentration on the level 1%, at temperatures 50, 150 and 300 K. The non-resonant character of ddμ-molecule formation on HD molecules was confirmed by measuring the ratio of yields of the two ddμ-fusion channels, R=Y(3He,n)/Y(3H,p), which proved to be close to unity. The ddμ formation rate was found to vary from λddμ-HD=0.05· 106 s-1 at T=50 K to λddμ-HD=0.12· 106 s-1 at T=300 K, in agreement with the theoretical prediction. A prominent peak at t<60 ns was observed in the time spectrum of fusion neutrons indicating a resonant contribution of ddμ formation from epithermal dμ atoms.

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Authors and Affiliations

  1. Petersburg Nuclear Physics Institute (PNPI), Gatchina, 188350, Russia

    G.G. Semenchuk, D.V. Balin, V.A. Ganzha, S.M. Kozlov, E.M. Maev, G.E. Petrov, S.M. Sadetsky, G.N. Schapkin, Yu.V. Smirenin, M.A. Soroka, A.A. Vasiliev, A.A. Vorobyov & N.I. Voropaev

  2. University of California and LBNL, Berkeley, CA, 94720, USA

    T. Case & K.M. Crowe

  3. Technical University of Munich (TUM), D-85747, Garching, Germany

    F.J. Hartmann, M. Mühlbauer & W. Schott

  4. Austrian Academy of Sciences, A-1090, Vienna, Austria

    B. Lauss & J. Zmeskal

  5. Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland

    C. Petitjean

Authors
  1. G.G. Semenchuk
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  2. D.V. Balin
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  3. T. Case
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  4. K.M. Crowe
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  5. V.A. Ganzha
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  6. F.J. Hartmann
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  7. S.M. Kozlov
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  8. B. Lauss
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  9. E.M. Maev
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  10. M. Mühlbauer
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  11. C. Petitjean
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  12. G.E. Petrov
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  13. S.M. Sadetsky
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  14. G.N. Schapkin
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  15. W. Schott
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  16. Yu.V. Smirenin
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  17. M.A. Soroka
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  18. A.A. Vasiliev
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  19. A.A. Vorobyov
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  20. N.I. Voropaev
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  21. J. Zmeskal
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Semenchuk, G., Balin, D., Case, T. et al. Study of muon catalyzed dd-fusion in HD gas. Hyperfine Interactions 118, 141–146 (1999). https://doi.org/10.1023/A:1012648922573

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