Accession Number : AD0651203

Title :   OPACITY OF HOT, HIGHLY COMPRESSED HYDROGEN.

Descriptive Note : Final rept., 14 Jan-14 Jul 66,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Lalos,George T. ; Hammond,Gordon L.

Report Date : 09 FEB 1967

Pagination or Media Count : 57

Abstract : The rapid gas compression technique employing a ballistic piston compressor was adapted to the study of the opacity of hydrogen at elevated pressures and temperatures. Hydrogen/helium mixtures were compressed for short times to pressures and temperatures exceeding 2500 atmospheres and 5000K, and the emission spectra were recorded and analyzed. The discrete line spectra were identified as due to metallic impurities, but the strong background continua could not be ascribed unequivocally to hydrogen. Computer calculations of the specie concentrations that comprise hot, highly compressed hydrogen/helium mixtures were made, and possible opacity producing mechanisms were advanced to explain the observed continua. (Author)

Descriptors :   (*HYDROGEN, OPTICAL PROPERTIES), ABSORPTION SPECTRA, CONTINUOUS SPECTRA, HIGH PRESSURE, HIGH TEMPERATURE, HELIUM, HIGH PRESSURE COMPRESSORS, IMPURITIES, LINE SPECTRA, GASEOUS ROCKET PROPELLANTS

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Optics
      Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE