Abstract
Results of recent calculations of cross-sections for muonic hydrogen atom scattering in solid hydrogen isotope targets are presented. The coherent parts of these cross-sections, namely, the elastic Bragg scattering and phonon coherent scattering, are calculated accurately for the first time. A fine structure of Bragg peaks is obtained in the case of Bravais fcc structure of hydrogen targets frozen rapidly at 3 K. The one-phonon coherent cross-section is estimated using the Debye approximation. The calculated differential cross-sections are used for Monte Carlo simulations of muonic atom diffusion and slowing down in solid hydrogens.
Also is calculated the energy-dependent rate of resonant ddµ molecule formation in 3 K solid deuterium quantum crystal, using the Debye model and Van Hove's formalism of the response function. This rate is very different from that obtained for the 3 K gas model.
The influence of dµ atom slowing down on the average ddµ formation rate is considered. It is shown that very slow dµ deceleration below 10 meV is important for explanation of experimental results.
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Adamczak, A. Deceleration of muonic hydrogen atoms in solid hydrogens. Hyperfine Interactions 119, 23–33 (1999). https://doi.org/10.1023/A:1012694232568
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DOI: https://doi.org/10.1023/A:1012694232568