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Spectroscopy of the Vapors of Compounds with Low Volatility Supercooled in a Supersonic Flow,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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For molecular spectroscopy and related methods of studying molecule structure, including the development of gasdynamic lasers, a problem of immediate importance is that of obtaining the vapors of compounds with low volatility in the gas phase at translational and rotational temperatures close to absolute zero and at densities sufficient for spectrum registration. It has been shown that conditions for such great supercooling can be created in a supersonic flow. Three systems are examined. In the first of these supercooling is produced in a supersonic flow of pure vapors from a furnace or a shock tube. The second system differs from the first in that the vapors are mixed with an inert gas. In the third system the vapors are diffused into the boundary layer of a supersonic flow of cold inert gas through the porous furnace wall which is parallel to the flow.
APPROVED FOR PUBLIC RELEASE