Volume 20 No 12 (2022)
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Research of the temperature dependence of the vibrational relaxation time in liquids based on a mechanism based on Frenkel's idea of the nature of the thermal motion of molecules
Samatov Gulam Bazarbayevich, Pedagogical , Ashirov Shamshidin Annazarovich
The processes of energy exchange between different degrees of freedom of liquid molecules play an important role in the study of a large number of physical and chemical phenomena, and the theoretical and experimental study of such phenomena has both scientific and practical significance. In the theoretical and experimental study of vibrational relaxation processes in liquids, models of binary collisions and collective interactions of the probability and time of perturbations of molecules are widely used. The first of these mechanisms ignores the collective interaction of molecules in liquids, while the connection of the necessary relaxation parameters during the study based on the second does not correspond to the experiment. For this reason, the question is raised about the introduction of a new model of the relaxation process in liquids. This article also discusses one of the theoretical works in this direction.
Relaxation, Molecular vibrations, Vibrational relaxation, Transition probability, vibrational relaxation mechanism, vibrational - propagation energy exchange, stage of molecular jumps, oscillator, Debye vibrations, Debye frequency, activation energy, number of jumps per unit time - frequency, vibrational relaxation time
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