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Search for muon catalyzed d 3He-fusion |
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| Authors: | EM Maev DV Balin T Case KM Crowe A Del Rosso VA Ganzha FJ Hartmann SM Kozlov B Lauss OE Maev M Mühlbauer F Mulhauser C Petitjean GE Petrov SM Sadetsky GN Schapkin W Schott GG Semenchuk YuV Smirenin MA Soroka AA Vasiliev AA Vorobyov NI Voropaev J Zmeskal |
| Institution: | (1) Petersburg Nuclear Physics Institute (PNPI), Gatchina, 188350, Russia;(2) University of California and LBNL, Berkeley, CA 94720, USA;(3) Institut de Physique de l'Université, Pérolles, CH-1700 Fribourg, Switzerland;(4) Technical University of Munich (TUM), D-85747 Garching, Germany;(5) Austrian Academy of Sciences, A-1090 Vienna, Austria;(6) Paul Scherrer Institut (PSI), CH-5232 Villigen, Switzerland |
| 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. This revised version was published online in August 2006 with corrections to the Cover Date. |
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