Accession Number : AD0636035

Title :   MEASUREMENTS OF THE INFRARED SPECTRAL TRANSMITTANCE OF OPTICALLY THICK SAMPLES.

Descriptive Note : Technical rept. no. 2, Dec 65-Jun 66.

Corporate Author : RUTGERS - THE STATE UNIV NEW BRUNSWICK N J SCHOOL OF CHEMISTRY

Personal Author(s) : Low, M. J. D. ; Abrams,L.

Report Date : 20 JUN 1966

Pagination or Media Count : 23

Abstract : Continued improvements in instrumentation have led to a wide use of infrared transmission spectroscopy, and have permitted the examination of samples of limited transparency. However, although there is no particular problem with samples having about 2% transmittance or more, considerable difficulties arise if the transmittance is in the fractional percent range. The present paper is concerned with such energy-limited spectral measurements. The effects of self-emitted radiation, ordinate expansion, and scan time are considered. (Author)

Descriptors :   (*INFRARED SPECTROSCOPY, TEST METHODS), INFRARED SPECTRA, LIGHT TRANSMISSION, MEASUREMENT, INFRARED RADIATION, SPECTROPHOTOMETERS, TEMPERATURE, STYRENE PLASTICS, PAPER, GLASS

Subject Categories : Test Facilities, Equipment and Methods
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE