Line Intensity and Pressure Broadening Studies in Hydrogen Fluoride and Other Problems in Infrared Spectroscopy PDF Download
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Author: Alvin H. Nielsen Publisher: ISBN: Category : Languages : en Pages : 119
Book Description
The principal activity under the contract was to carry out experiments which would give information about the shapes, shifts, and effects of self-broadening of spectral lines using the vibration-rotation lines in the fundamental infrared band of Hydrogen Fluoride as the medium for measurement. All measurements were made with a high-dispersion vacuum-grating infrared spectrometer capable of resolution to something bett than 0.1/cm in the region of the HF fundamental. Slit functions were carefully determined using absorption lines from the fundamental of CO at very low pressures. Computational methods were developed making it possible to determine true line shapes accurately. Measured line shapes were compared with predicted Lorentz line shapes. The Lorentz parameter was obtained by the equivalentwidth method for the pressure broadened spectral lines in the HF fundamental from m = -6 to m = +12. Investigations of the infrared spectra of several molecules such as CO2, T2O, CH3C1 are included. Molecular constants are listed. (Author).
Author: Alvin H. Nielsen Publisher: ISBN: Category : Languages : en Pages : 119
Book Description
The principal activity under the contract was to carry out experiments which would give information about the shapes, shifts, and effects of self-broadening of spectral lines using the vibration-rotation lines in the fundamental infrared band of Hydrogen Fluoride as the medium for measurement. All measurements were made with a high-dispersion vacuum-grating infrared spectrometer capable of resolution to something bett than 0.1/cm in the region of the HF fundamental. Slit functions were carefully determined using absorption lines from the fundamental of CO at very low pressures. Computational methods were developed making it possible to determine true line shapes accurately. Measured line shapes were compared with predicted Lorentz line shapes. The Lorentz parameter was obtained by the equivalentwidth method for the pressure broadened spectral lines in the HF fundamental from m = -6 to m = +12. Investigations of the infrared spectra of several molecules such as CO2, T2O, CH3C1 are included. Molecular constants are listed. (Author).
Author: Publisher: ISBN: Category : Aeronautics Languages : en Pages : 1040
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Publisher: ISBN: Category : Languages : en Pages : 63
Book Description
The aim of this investigation was to determine experimentally the true line shape and line position for as many as possible of the high J rotational absorption lines in the hydrogen fluoride fundamental band. The line shapes were to be determined at identical temperatures and at pressures where pressure broadening made the only significant contribution to the line shape. All data were taken on the high resolution vacuum-grating spectrometer. The HF lines were used as internal standards for calibrating purposes. The R(5) line of the first overtone of CO was used to determine the slit function to correct measured line shapes for distortions caused by instrumental broadening. The line position of R(11) was measured to be 4320.97 waves per cm. The line shapes of R(9), R(10), and R(11) were determined and found to be truly Lorentzian.
Author: Alvin H. Nielsen
Author: Alvin H. Nielsen
Author: United States. Air Force. Office of Aerospace Research
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Author: D. F. Smith
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Author: United States. National Aeronautics and Space Administration
Author: 
Author: United States. National Aeronautics and Space Administration