Investigation of the Electric Discharge Excited Vibrational Energy Transfer Laser.
Final technical rept. 1 Mar 74-15 Nov 74,
UNITED AIRCRAFT RESEARCH LABS EAST HARTFORD CONN
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The objective of the investigation described in this report is the development of technology required for demonstration of laser action in hydrogen halides pumped by vibrational energy transfer from hydrogen or deuterium excited in a low-pressure self-sustained electric discharge. A combined theoretical and experimental investigation of such a device relying upon near-resonant V-V transfer in the D2-HCl pair has been undertaken. The theoretical analysis has treated the electric discharge excitation process, using a Boltzmann analysis of known and reliable electron excitation cross section data for processes occuring within the deuterium discharge. Mixing and vibrational energy transfer and relaxation between vibrationally excited D2 and HCl have been treated in a comprehensive one-dimensional kinetic model of an interacting gas dynamic flow of multi-vibrational level species. Experimental investigations have demonstrated direct evidence for effective vibrational energy transfer in the D2-HCl system. Vibrational temperatures in excess of 2000K have been measured in HCl pumped by V-V transfer from discharged D2 from an analysis of spontaneous infrared emission from the active medium.
- Lasers and Masers
- Atomic and Molecular Physics and Spectroscopy