Role of Rotational and Translational Local Modes in Vibrational Relaxation in Solids: A Study of NH and ND in Solid Ar
- 17 October 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 39 (16), 1000-1004
- https://doi.org/10.1103/physrevlett.39.1000
Abstract
A quantitative model for vibrational relaxation of impurity molecules in host crystals is presented, and applied to the vibrational relaxation of NH and ND in solid Ar. Realistic impurity-host interaction and impurity-cage geometry are employed. It is shown that impurity rotation is the dominant receiving mode in the relaxation, and only a small fraction of the energy released goes directly into phonon modes. The results explain the faster relaxation of NH compared with ND and the temperature independence of the measured decay rates.Keywords
This publication has 9 references indexed in Scilit:
- Rotational mechanism for vibrational relaxation in rigid mediaChemical Physics Letters, 1977
- Vibrational relaxation and energy gap law breakdown in the X 3Σ− state of NH and ND in solid argonThe Journal of Chemical Physics, 1976
- Direct vibrational relaxation of a molecule in a dense mediumMolecular Physics, 1976
- Effect of temperature and quencher concentration on vibrational relaxation in condensed mediaThe Journal of Chemical Physics, 1976
- Theory of excimer vibrational relaxation and U.V. emission in solid neonChemical Physics, 1975
- Interdependence of guest radiationless transitions and localized phonon structure: NH and ND(A 3Π) in rare gas latticesThe Journal of Chemical Physics, 1975
- Pseudorotational local mode participation in OH and OD(A 2Σ+) vibrational relaxation in a Ne latticeThe Journal of Chemical Physics, 1975
- Energy gap law for vibrational relaxation of a molecule in a dense mediumThe Journal of Chemical Physics, 1975
- On a semiclassical study of molecular collisions. II. Application to HCl-argonThe Journal of Chemical Physics, 1973