Accession Number : AD0646884

Title :   RESEARCH DIRECTED TOWARD THE STUDY OF INFRARED TRANSMISSION THROUGH VARIOUS ATMOSPHERES.

Descriptive Note : Final rept., 19 Dec 63-31 Aug 66,

Corporate Author : NORTH CAROLINA STATE UNIV RALEIGH PHYSICAL SCIENCE RESEARCH

Personal Author(s) : Harward,Charles N. ; Manring,Edward R. ; Patty,Richard R.

Report Date : DEC 1966

Pagination or Media Count : 37

Abstract : Previously reported work is summarized (see AD-607 401 and AD-638 747), and a detailed report is given concerning further data obtained for ammonia samples at reduced temperatures are presented and used to obtain a self-broadening coefficient relative to helium. Some data in report AD-638 747 indicate a possible temperature dependence of the optical collision diameters; further data is necessary to determine the functional dependence. It appears that the dependence is T exp.-b where b is a small positive number. A prism spectrometer was used with a sampling technique involving a continuous gas flow through the absorption cell to obtain a band strength for the 667/cm band of CO2 which is in agreement with that obtained from high resolution measurements and agrees with the spectral characteristics given by Burch, Gryvnak, and Williams. (Author)

Descriptors :   (*INFRARED RADIATION, WAVE PROPAGATION), (*AMMONIA, INFRARED PHENOMENA), ABSORPTION SPECTRA, INFRARED SPECTRA, HELIUM, INTERACTIONS, SPECTROMETERS, BAND SPECTRA, CARBON DIOXIDE

Subject Categories : Infrared Detection and Detectors
      Atomic and Molecular Physics and Spectroscopy
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE