Abstract

A theoretical description of the properties of dilute atomic hydrogen impurities in quantum and classical solids has been developed and applied to H atom impurities in solid H2, Kr, and Xe at pressures 0≤P∼<140 kbars. Results indicate that H atoms should remain substitutionally trapped in solid Kr and Xe up to near melting temperature, whereas dilute H impurities in solid H2 will remain trapped for temperatures T<<30 K. Calculated properties of the atomic impurities are their r.m.s. fluctuations about their equilibrium position, the binding energy, the single particle distribution function, and the lattice distortion.

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