Experimental investigation of muon-catalyzed dt fusion at cryogenic temperatures |
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| Affiliation: | 1. Institute for Medium Energy Physics, Austrian Academy of Sciences, Boltzmanngasse 3, A-1090 Wien, Austria;2. University of California and Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA;3. Paul Scherrer Institute, CH-5232 Villigen, Switzerland;4. Los Alamos National Laboratory, Los Alamos, NM 87545, USA;5. Physics Department, TU München, D-85747 Garching, Germany;6. Russian Research Centre Kurchatov Institute, Moscow 123182, Russia;1. Dhaanish Ahmed College of Engineering, Chennai 601301, India;2. Sri Sai Ram Engineering College, Chennai 600044, India;1. Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei 230026, Anhui, PR China;2. Key Laboratory of Strong-Coupled Quantum Matter Physics, Chinese Academy of Sciences, PR China;3. Institute for Technical Physics and Materials Science Centre for Energy Research, Hungarian Academy of Sciences, H-1121 Budapest, Hungary;4. Institute for Nuclear Research, Hungarian Academy of Sciences (ATOMKI), P.O. Box 51, Debrecen, Hungary;5. ELI-ALPS, ELI-HU Non-Profit, Ltd., Dugonics tér 13, H-6720 Szeged, Hungary;1. GRESPI/Thermomécanique, Université de Reims Champagne-Ardenne, Moulin de la Housse, BP 1039, 51687 Reims Cedex 2, France;2. Laboratoire d’Energétique Appliquée et de Pollution, Université Constantine 1, Constantine 25000, Algeria;3. Laboratoire de Mécanique, Physique et Modélisation Mathématique, Université de Médéa, 26000 Médéa, Algeria;4. Faculté des Hydrocarbures et Energies renouvelables et Sciences de la terre et de l’univers, Université Kasdi Merbah, 30000 Ouargla, Algeria;1. International Laboratory of Mechanics, National Research University of Information Technologies, Mechanics and Optics, 197101 St. Petersburg, Russia;2. Faculty of Science, Engineering and Computing, Kingston University, SW15 3DW London, United Kingdom;3. Institute of Military Engineering and Safety Research, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia;4. Special Materials Corporation, 194044 St. Petersburg, Russia;1. Dept. of Industrial Engineering, University of Salerno, Via G. Paolo II, 132 - 84084 Fisciano, Italy;2. CIRA, Italian Aerospace Research Centre, Structural and Material Department, Via Maiorise, 81043 Capua, Italy;3. Dept. of Chemical, Materials and Production Engineering, University of Naples Federico II, P.le V. Tecchio, 80, 80125 Naples, Italy;4. Dept. of Engineering, University of Campania “Luigi Vanvitelli”, Via Roma 29, 81031 Aversa, Italy |
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| Abstract: | An experimental investigation of muon-catalyzed fusion (μCF) in gaseous, liquid and solid mixtures of deuterium and tritium was performed. The target conditions included the range of densities of 0.03 ≲ φ ≲ 1.5, tritium concentrations of 2% ≲ ct ≲ 90% and temperatures of 13 ≲ T ≲ 40K. The study was based on the analysis of observed cycling rates extracted from the measured time distributions of the fusion neutrons. For the first time, the density dependence of the rates λ(dtμ)d0 for the dtμ molecule formation in collisions of tμ atoms in the lower (F=0) hyperfine state with D2 molecules was determined experimentally. Evidence for the proposed effects of below-threshold resonances on molecular formation was found. Measurements at low temperatures in mixtures of different molecular compositions revealed a clear predominance of the λ(dtμ)d0 formation rate. The probability q1s for dμ atoms to reach the ground state was determined as a function of density and tritium concentration. |
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