Translational energy transfer

Internal -> translational energy transfer Surface deexcitation (phonon, electron)... 

Vibrational to Translational Energy Transfer Experimental Results... 

A. Infrared and Raman — vibrational energy levels Vibration-translation energy transfer, solute-solvent interaction, H -bonds, ion pairs... 

Recamier, J., and Berrondo, M. (1991), Vibration-Translation Energy Transfer in a Collision Between an Atom and a Morse Oscillator, Mol. Phys. 73,831. 

In the preceding we have reviewed collisional deactivation of ions in thermal or low-translational-energy collisions. An interesting phenomenon, however, is the observation of E-T and V-T transfers in ion-neutral collisions at translational energies of several hundred electron volts. These transfers cause the so-called superelastic peaks observed in translational-energy measurements of the scattered ions. Electronic to translational energy transfer was observed in collisions of 3.5-keV N+ with rare-gas atoms and with 02.255 256... 

First, collisional relaxation of rotation is fast. One to ten collisions are sufficient for rotation-translation energy transfer. At 1 torr at least one collision per microsecond will occur for both 02 and HC1. In contrast, rotational relaxation by radiation, when allowed, is very slow, of the order of 102 seconds. The absence of... 

If a relaxing gas, A, is mixed with a non-relaxing gas, B, such as helium, there are two collision processes by which vibration-translation energy transfer may occur... 

If both A and B are polyatomic relaxing gases, there will also be two collision processes, corresponding to (1) and (2), for vibration-translation energy transfer from B in homomolecular and heteromolecular collisions. In addition there can be a vibration-vibration transfer between A and B, making five transfer processes in all... 

Electronic-vibration and electronic-translation energy transfer with AE 1 eV... 

Ennen, G. and Ottinger, Ch. (1974). Rotation-vibration-translation energy transfer in laser excited Li2(B nu), Chem. Phys., 3, 404-412. 

Data for vibrational-translational energy transfer are usually presented as a relaxation-time-pressure product pr, where r refers to the e-folding time... 

E.E.Nikitin and S.YaUmanski, Vibrational to translational vs vibronic to translational energy transfer in molecular collisions. Comm. At. Mol. Phys. 3, 195 (1972)... 

On the other hand v-t (vibration-translation) energy transfer tends to depopulate the v + 1 level... 

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