Shock Tube Rotational Relaxation Measurements in Low‐Temperature Hydrogen

Rotational relaxation times are measured for normal hydrogen and parahydrogen in a cryogenic shock tube with initial temperatures of 80–100°K. A sensitive schlieren optical system, employing a laser light source and a photomultiplier, is used to measure laboratory relaxation times of the order of 0.1 μsec, with a spatial resolution of 0.1 mm. Measurements are made over a temperature range of 140–450°K. Relaxation times are in general agreement with results obtained by other methods.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/69658/2/JCPSA6-56-7-3226-1.pd

A Cryogenic Shock Tube: Low Temperature Shock Waves In Molecular Hydrogen.

PhDMoleculesUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/186906/2/7205018.pd

Low temperature shock waves in molecular hydrogen

http://deepblue.lib.umich.edu/bitstream/2027.42/8424/5/bad5272.0001.001.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/8424/4/bad5272.0001.001.tx