High precision study of muon catalyzed fusion in D 2 and HD gas

Author： Balin D. Ganzha V. Kozlov S. Maev E. Petrov G. Soroka M. Schapkin G. Semenchuk G. Trofimov V. Vasiliev A. Vorobyov A. Voropaev N. Petitjean C. Gartner B. Lauss B. Marton J. Zmeskal J. Case T. Crowe K. Kammel P. Hartmann F. Faifman M.

Publisher： MAIK Nauka/Interperiodica

ISSN： 1063-7796

Source： Physics of Particles and Nuclei, Vol.42, Iss.2, 2011-03, pp. : 185-214

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Abstract

Muon catalyzed dd fusion in D₂ and HD gases in the temperature range from 28 to 350 K was investigated in a series of experiments based on a time-projection ionization chamber operating with pure hydrogen. All main observables in this reaction chain were measured with high absolute precision including the resonant and non-resonant ddμ formation rates, the rate for hyperfine transitions in dμ atoms, the branching ratio of the two charge symmetric fusion channels ³He + n and t + p and the muon sticking probability. The report presents the final analysis of the data together with a comprehensive comparison with calculations based on recent μCF theories. The energy of the loosely bound ddμ state with quantum numbers J = 1, ν = 1, which is central to the mechanism of resonant molecule formation, is extracted with precision ɛ₁₁(fit) = −1.9651(7) eV. in impressive agreement with the latest theoretical results ɛ₁₁(theory) = −1.9646 eV.