Accession Number : ADA267118


Title :   The Pressure Broadening of HDO by O2, N2,H2, and HE Between 100 K and 600 K


Corporate Author : NORTH CAROLINA CENTRAL UNIV DURHAM DEPT OF PHYSICS


Personal Author(s) : Goyette, Thomas M ; Ferguson, David W ; De Lucia, Frank C ; Dutta, Jyotsna M ; Jones, Charles R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a267118.pdf


Report Date : 30 Jun 1993


Pagination or Media Count : 26


Abstract : Microwave transitions of HDO pressure-broadened by H2, O2, N2, and He were studied in the temperature region between 100K and 600K. Measurements below 250K were made in a collisionally cooled cell. Above this temperature a conventional equilibrium cell was used in the region where the HDO has non- negligible vapor pressure. Significant variations in both the pressure broadening parameter and its temperature dependence were observed among the studied transitions. Ordinarily, a power law is used to describe this temperature dependence. Deviations from this were observed below 150K.


Descriptors :   *TEMPERATURE , *MICROWAVES , *HYDROGEN , *PRESSURE , *HELIUM , *COLLISION BROADENING , *OXYGEN , *NITROGEN , MEASUREMENT , DIPOLE MOMENTS , MOLECULAR PROPERTIES , VARIATIONS , COOLING , TRANSITIONS , VAPOR PRESSURE , QUADRUPOLE MOMENT , PARAMETERS


Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Electricity and Magnetism
      Atomic and Molecular Physics and Spectroscopy


Distribution Statement : APPROVED FOR PUBLIC RELEASE