Accession Number : ADA017739

Title :   Research and Development of Techniques for Measuring the Infrared Absorptance of the Fundamental Vibration-Rotation Band of NO(+).

Descriptive Note : Final rept. 25 Feb 72-30 Jun 74,


Personal Author(s) : Querry ,Marvin R. ; Urani,John ; Phillips,Robert ; Hoover,Gary

Report Date : 11 MAR 1975

Pagination or Media Count : 92

Abstract : The ultimate goal of this program of research was to measure the strength of the fundamental vibrational-rotational band of NO(+) which is centered at about 4.3 micrometer (2325/cm) in the infrared. A theoretical analysis was made of the fractional absorptance of monochromatic radiation by the fundamental vibrational-rotational band of NO(+). Equipment constructed or partially constructed for this project included a high-vacuum pumping station, pressure gauges, a gas-handling manifold, as gas purification system a radio-frequency generator, an infrared source and chopper assembly, a lead-selenide detector assembly, two photomultiplier-tube units, a long path length white cell, and parts of a data acquisition system. A PbS(x)Se(1-x) diode-laser system would be required to observe the absorption in NO(+) at low pressures.

Descriptors :   *Gas ionization, *Vibrational spectra, *Nitrogen oxides, Laboratory equipment, Infrared spectra, Mass spectrometry, Emission spectra, Photoionization, Absorption, Molecular states, Molecular energy levels, Atomic energy levels, Pressure, Radiofrequency generators

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE