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Search for muon catalyzed d 3He-fusion

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Abstract

We report on the results of an experiment aimed at observing muon-catalyzed d 3He-fusion with a setup previously used for studies of the muon-catalyzed dd-fusion. The basic element of the setup is a high pressure ionization chamber operating as an active target. In this experiment the chamber was filled with an HD + 3He (5.6%) gas mixture at 13.2 bar pressure and 50 K temperature. These conditions were chosen as optimal for formation of the 3Heμd-molecules with a low level of background from the d-μ-d fusion. The chamber was exposed to the negative muon beam at PSI. During a 3-week data-taking period, 9.7 × 108 muon stops have been selected. The analysis of the data was able to determine a new upper limit for the d 3He-fusion rate in the 3Heμd-molecule (λf≤ 6× 104 s-1), which is more than three orders of magnitude lower than the previously existed limit.

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Authors and Affiliations

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

    E.M. Maev, D.V. Balin, V.A. Ganzha, S.M. Kozlov, O.E. Maev, G.E. Petrov, S.M. Sadetsky, G.N. Schapkin, G.G. Semenchuk, 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. Institut de Physique de l'Université, Pérolles, CH-1700, Fribourg, Switzerland

    A. Del Rosso & F. Mulhauser

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

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

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

    B. Lauss & J. Zmeskal

  6. Paul Scherrer Institut (PSI), CH-5232, Villigen, Switzerland

    C. Petitjean

Authors
  1. E.M. Maev
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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. A. Del Rosso
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  6. V.A. Ganzha
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  7. F.J. Hartmann
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  8. S.M. Kozlov
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  9. B. Lauss
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  10. O.E. Maev
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  11. M. Mühlbauer
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  12. F. Mulhauser
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  13. C. Petitjean
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  14. G.E. Petrov
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  15. S.M. Sadetsky
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  16. G.N. Schapkin
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  17. W. Schott
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  18. G.G. Semenchuk
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  19. Yu.V. Smirenin
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  20. M.A. Soroka
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  21. A.A. Vasiliev
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  22. A.A. Vorobyov
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  23. N.I. Voropaev
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  24. J. Zmeskal
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Maev, E., Balin, D., Case, T. et al. Search for muon catalyzed d 3He-fusion. Hyperfine Interactions 118, 171–176 (1999). https://doi.org/10.1023/A:1012609308461

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