LOW TEMPERATURE MILLIMETER WAVE DOUBLE RESONANCE OF METHYL FLUORIDE

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Title: LOW TEMPERATURE MILLIMETER WAVE DOUBLE RESONANCE OF METHYL FLUORIDE
Creators: Ball, C. D.; Beaky, M. M.; De Lucia, Frank C.
Issue Date: 1997
Publisher: Ohio State University
Abstract: We have recently undertaken an investigation of molecular collision processes employing tine resolved double resonance techniques A millimeter wave - millimeter wave double refinance experiment becomes possible al low temperatures where, unlike at room temperature, a millimeter wave pump can induce large deviations from the thermal population distribution. We use the collisional cooling method to cool molecules to very low temperatures (around 4 K). Resonances which result from quasi-bound states, dominate low temperature pressure broadening cross sections and also contribute to low temperature rotational energy transfer In our first experiment, we have measured state-to-state; energy transfer rates for methyl fluoride (collisionally cooled by helium). We compare the pressure dependence of these rates with measured pressure broadening data.
Description: Author Institution: Department of Physics, The Ohio State University;
URI: http://hdl.handle.net/1811/13798
Other Identifiers: 1997-FC-01
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