Hydrodynamic calculation of the frequency dependent friction on the bond of a diatomic molecule
- 15 July 1995
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 103 (3) , 1160-1174
- https://doi.org/10.1063/1.469826
Abstract
In this paper molecular hydrodynamics is used to calculate the dynamic friction on the intramolecular vibrational coordinate of a homonuclear diatomic molecule dissolved in a simple liquid. The predicted dynamic friction is then compared to recent computer experiments. Agreement with the experimental dynamic function is obtained when the linearized hydrodynamics is modified to include Gaussian viscoelasticity and compressibility. The hydrodynamicfriction on the bond appears to agree qualitatively very well, although quantitative agreement is not found at high frequencies. Various limits of the hydrodynamicfriction are discussed.Keywords
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