Energy Transfer in A2 sigma OH. I. Rotational.
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
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A frequency doubled, tunable dye laser is used to excite individual v, N, J levels of the A-state of the OH molecule. The fluorescence emitted in the presence of known pressures of various fill gases has permitted the determination of collisionally-induced population changes, and hence state-to-state energy transfer rates. There are reported results on rotational energy transfer within v 0, using six different initially pumped levels for nitrogen as a collision partner, and two each for hydrogen and argon. It is found that the rates are fast 14 per torr per microsecond for a typical total transfer rate with nitrogen, that a process having Delta N Delta J occurs faster than one where Delta N not equal Delta J, and that multiquantum transfer rates are nearly as large as single quantum transfer rates. Author
- Atomic and Molecular Physics and Spectroscopy