REACTIONS OF VIBRATIONALLY EXCITED HYDROGEN AND DEUTERIUM MOLECULES WITH ATOMS AND RADICALS. HETEROGENEOUS RELAXATION OF THE VIBRATIONAL ENERGY OF H//2 AND D//2 ON QUARTZ AND TEFLON SURFACES.

The ESR method was used to measure the probability of relaxation of the vibrational energy of H//2(v equals 1) and D//2(v equals 1) molecules during collisions with the surfaces of quartz and F32-L and F4-D Teflons. The results indicate that this relaxation proceeds by an adsorption-phonon mechanism. In the authors experiments epsilon H//2 for quartz was found to be slightly temperature-dependent, with activation energy (5. 9 plus or minus 2. 3) kJ/mole. All the information known to us at the present time regarding the heterogeneous vibrational relaxation of H//2 and D//2 on 'kinetic' surfaces (glasses, quartz, Teflon) is given in Table 1 and shows that the results of different investigations are in good agreement.