Collision-induced absorption spectra of H₂ in the first overtone region and the fundamental band of D₂ in binary mixtures: D₂-N₂, D₂-CO, D₂-He, D₂-Ar and D₂-Kr

Stamp, Clifford Francis Joseph (2006) Collision-induced absorption spectra of H₂ in the first overtone region and the fundamental band of D₂ in binary mixtures: D₂-N₂, D₂-CO, D₂-He, D₂-Ar and D₂-Kr. Doctoral (PhD) thesis, Memorial University of Newfoundland.

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Abstract

The present research project consisted of three distinct spectral regions of study. First there was a refinement to the spectral analysis of the collision-induced absorption (CIA) spectra of the first overtone band of hydrogen. This consisted primarily of an investigation of the density dependence of the so-called "fudge factor" by use of various semi-empirical line shapes. -- The second part was an analysis of the CIA of the fundamental band of D₂ in D₂-N₂ and D₂-CO mixtures. The absorption coefficients were determined using appropriate statistical methods applied to a density expansion of the integrated absorption of the spectra, as well as calculation of the characteristic parameters of various semi-empirical line shapes applied to the experimental data. -- The third part of the thesis consisted of a systematic study of the CIA spectra of the fundamental band of D₂ enhanced by He, Ar, and Kr at room temperature. The absorption coefficients were determined using appropriate statistical methods applied to a density expansion of the integrated absorption of the spectra, and the characteristic parameters of various semi-empirical line shapes were deduced from a nonlinear fitting procedure applied to the experimental data. -- During the course of the above work, the FORTRAN programs used to transform the raw data into the desired numerical quantities and complete the necessary analysis were updated and as necessary completely rewritten to advance the data analysis. This work was commenced in earnest during the author's M.Sc. thesis with the goal being to maximize the robust nature of the analysis and propagation of errors throughout all calculations to obtain maximum reliability in the results.

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