Theory of Vibrational Relaxation of R        2    ★      Centres in Rare‐Gas Solids. Application to Ne        2    ★ | Zendy

Selg M. | Zendy

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Theory of Vibrational Relaxation of R 2 ★ Centres in Rare‐Gas Solids. Application to Ne 2 ★

Author(s) -

Selg M.

Publication year - 1985

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2221290238

Subject(s) - anharmonicity , vibrational energy relaxation , relaxation (psychology) , phonon , coupling (piping) , atomic physics , vibration , molecular vibration , materials science , rare gas , condensed matter physics , chemistry , physics , molecule , quantum mechanics , excited state , metallurgy , psychology , social psychology

A tunnel mechanism of vibrational relaxation is proposed for a class of emission centres which are characterized by a weak coupling to the crystalline environment and have vibrational quanta considerably exceeding phonon energies. For such kind of centres, e.g. for R 2 ★centres in solidified rare gases, a new relaxation channel, connected with the anharmonicity of vibrations, appears. The theory is applied to the centre Ne 2 ★in solid Ne: a direct calculation of the probabilities of vibrational transitions is carried out.

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