Accession Number : AD0638747

Title :   TEMPERATURE DEPENDENCE OF THE ABSORPTANCE OF AMMONIA NEAR 850/CM.

Descriptive Note : Interim rept.

Corporate Author : NORTH CAROLINA STATE UNIV RALEIGH PHYSICAL SCIENCE RESEARCH

Personal Author(s) : Rogers,A. K. ; Manring,E. R. ; Patty,R. R.

Report Date : MAY 1966

Pagination or Media Count : 47

Abstract : The equipment and experimental techniques used to observe the temperature dependence of absorptance in a small region of the 950/cm band of ammonia are described. The integrated absorptance of two spectral lines was measured at 214K and 300K for samples of pure ammonia and samples of ammonia broadened with nitrogen. The results are presented as plots of total absorptance for the small spectral region versus absorber concentration u and total pressure P. An equivalent pressure Pe is expressed in terms of a self-broadening coefficient B which is function of the ratio of the optical collision diameters. Self-broadening coefficients are determined at 214K and 300K. Integrated absorptances at 300K are compared with those obtained for samples at 214K to determine whether the temperature dependence is that predicted by the Lorentz theory. (Author)

Descriptors :   (*AMMONIA, ABSORPTION SPECTRA), (*JUPITER(PLANET), *PLANETARY ATMOSPHERES), (*INFRARED SPECTROSCOPY, AMMONIA), BAND SPECTRA, TEMPERATURE, INSTRUMENTATION

Subject Categories : Astrophysics
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE