Publications [#318441] of Henry Everitt

Papers Published

1. Everitt, HO; de Lucia, FC, The temperature dependence of fast vibrational energy transfer processes in methyl fluoride, Molecular Physics, vol. 79 no. 5 (August, 1993), pp. 1087-1101, Informa UK Limited [html], [doi]
   (last updated on 2025/11/07)

   Abstract:
   The temperature dependencies of two fast vibrational energy transfer processes in methyl fluoride (CH3F) have been measured between 120K and 400 K by means of time-resolved millimetre/submillimetre-infrared double resonance spectroscopy. The first of these processes, a resonant vibrational swapping process between the ground vibrational state and the v3 = 1 (V3) vibrational state, effectively transfers population between states of A and E symmetry. A rapid increase in cross section with decreasing temperature was observed for this process, a result in excellent quantitative agreement with semi- classical theory of near resonant vibrational collisions. The second process, which transfers population between the v3 and v6 = 1 (v6) vibrational states, was found experimentally to have a much weaker temperature dependence. From this result and from additional experimental observations of symmetry type-sensitive energy transfer into v6, the energy transfer between v3and v6 was demonstrated to result from a ‘direct’ vibrational energy transfer rather than from an ‘indirect’ vibrational swap process. © 1993 Taylor and Francis Ltd.