Journal ArticleDOI
Interference between two adjacent collisions in vibrational relaxation
Hyung Kyu Shin,Joel Keizer +1 more
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In this paper, interference effects in the collision of a molecule with two incident particles have been examined using the classical approach to vibrational energy transfer, and it was shown that strong interference effects could arise in collisions in which the collision frequency and the vibrational frequency are comparable in magnitude.About:
This article is published in Chemical Physics Letters.The article was published on 1974-08-15. It has received 22 citations till now. The article focuses on the topics: Vibrational energy relaxation & Collision frequency.read more
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Journal ArticleDOI
Vibrational energy relaxation in liquids
J. Chesnoy,G.M. Gale +1 more
TL;DR: In this article, the de-excitation of the vibrational population of small molecules in the liquid state is considered and the dependence of the relaxation time on experimental parameters such as density, temperature or the concentration of a mixture.
Journal ArticleDOI
Vibrational relaxation theories and measurements
TL;DR: A review of recent applications of various theories of nonreactive collisions between diatomic molecules, from semiclassical to quantal, are surveyed in light of experimental data as discussed by the authors, providing the theoretician with a background of those features of the collision problems that require more accurate treatments, and to provide the experimentalist with a spectrum of models available for handling his data.
Journal ArticleDOI
On binary collision theories of relaxation in liquids
David W. Oxtoby,David W. Oxtoby +1 more
TL;DR: In this paper, the properties of many-body correlation functions and spectra in liquids, and corresponding binary (two-body) approximations, were discussed, and it was shown that for a general class of triple collisions, the manybody and binary spectra become the same at high frequencies; this is illustrated by an explicit model calculation of force spectra and autocorrelation functions.
Journal ArticleDOI
Vibrational energy relaxation of highly compressed gaseous H2 and N2
TL;DR: In this article, the authors measured the vibrational energy relaxation time of dense gaseous hydrogen at 400 K up to 250 MPa and nitrogen at 293 k up to 290 MPa.
References
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Journal ArticleDOI
On vibrational relaxation in liquids
David W. Oxtoby,Stuart A. Rice +1 more
TL;DR: In this article, the relationship between vibrational population relaxation, loss of phase coherence, and the homogeneously broadened spontaneous polarized Raman linewidth is discussed, and a general equation relating there quantities is derived.
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Mean Free Path and Ultrasonic Vibrational Relaxation in Liquids and Dense Gases
W. M. Madigosky,T. A. Litovitz +1 more
TL;DR: In this paper, it was shown that for mean free path calculations a realistic cell model must not use fixed walls as the Eyring and Hirschfelder model does but rather moving walls.
Journal ArticleDOI
Vibrational energy transfer in high-energy collisions.
TL;DR: In this paper, a time-dependent wave function is used to evaluate the exact transition probabilities for a forced harmonic oscillator. But the energy transfer to these oscillating wave functions is always identical to that of a classical oscillator, and the energy transferred to these wave functions can be used to calculate the perturbation value of the energy.
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Vibrational Relaxation in Liquids
Paul K. Davis,Irwin Oppenheim +1 more
TL;DR: In this paper, the binary collision model of vibrational relaxation in liquids is examined within the framework of statistical mechanics and the results apply to diatomic molecules with large vibrational spacings when very dilute in an effective thermal reservoir of structureless particles.
Journal ArticleDOI
Theory of Ultrasonic Thermal Relaxation Times in Liquids
TL;DR: In this paper, the authors considered the theory of thermal relaxation phenomena in liquids from the standpoint that the mechanism of energy transfer in the liquid is the same as in a gas and found that binary collisions and not cooperative action of the molecules are important.