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 [html], [doi] .

    The temperature dependencies of two fast vibrational energy transfer processes in methyl fluoride (CH3F) have been measured between 120 K 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 nu3 = 1 (nu3) 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 semiclassical theory of near resonant vibrational collisions. The second process, which transfers population between the nu3 and nu6 = 1 (nu6) 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 nu6, the energy transfer between nu3 and nu6 was demonstrated to result from a 'direct' vibrational energy transfer rather than from an 'indirect' vibrational swap process.