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Muon molecular formation and transfer rate in solid hydrogen-deuterium mixtures |
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| Authors: | Jacot-Guillarmod R Bailey J M Beer G A Beveridge J L Fujiwara M C Huber T M Kammel P Knowles P E Kunselman A R Marshall G M Martoff C J Mason G R Mulhauser F Olin A Petitjean C Woźniak J Zmeskal J |
| Institution: | (1) Present address: Université de Fribourg, CH-1700 Fribourg, Switzerland;(2) Chester Technology, UK;(3) University of Victoria, V8W 2Y2 Victoria, British Columbia, Canada;(4) TRIUMF, V6T 2A3 Vancouver, British Columbia, Canada;(5) University of British Columbia, V6T2A6 Vancouver, British Columbia, Canada;(6) Gustavus Adolphus College, 56082 St. Peter, MN, USA;(7) Austrian Academy of Sciences, A-1090 Wien, Austria;(8) University of Wyoming, 82071 Laramie, WY, USA;(9) Temple University, 19122 Philadelphia, PA, USA;(10) Paul Scherrer Institute, CH-5232 Villigen, Switzerland;(11) Institute of Physics and Nuclear Techniques, Cracow, Poland;(12) Present address: University of California, 94720 Berkeley, CA, USA |
| Abstract: | In an experiment at TRIUMF to study muon-catalyzed fusion and associated atomic and molecular effects, negative muons were stopped in a solid protium hydrogen layer containing a small amount of deuterium. Most of the resulting µp atoms disappeared by formation of ppµ molecules or by muon transfer to a deuteron. The µd can drift almost freely through the hydrogen layer due to the Ramsauer-Townsend effect and may even leave the layer. If a thin neon layer is frozen atop the hydrogen, the exiting muonic atoms will very rapidly release their muon to a neon atom. The analysis of the time structure of the neon X-rays is used to determine the rates of the slower processes involved in the evolution of the µp. This analysis has been performed with the help of Monte Carlo calculations, which simulate the kinetics of both µp and µd atoms in the hydrogen mixtures. |
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