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Thesis--Rijksuniversiteit te Leiden. / Includes bibliographical references.

Thesis--Rijksuniversiteit te Leiden. / Includes bibliographical references.

ClN_3 was photolyzed in various gas mixtures to transform its chemical energy into laser radiation. Reaction mechanisms, energy distribution in reaction products, and relative reaction rates were deduced from the laser emission. Flash photolysis of ClN_3-H_2 mixtures produced HCl laser emission; however, due to a narrow range of operating conditions and many competing reactions, the laser output was less than that obtained from comparable Cl_2-H_2 mixtures. The rate constants for H + ClN_3 —> HCl* (v=n) + N_3 were determined to be 0.45 ± 0.05 of the corresponding rate constants for H + Cl_2 —> HCl* (v=n) + Cl. Chlorine azide was examined as a source of excited N_2 (v>0) in a CO_2 laser system. Collisions of ground state CO_2 with Cl_2 (v>0) and M* prevented population inversion. The explosion of ClN_3 was used to drive an HF chemical laser by thermally dissociating NF_3 or SF_6 to produce F for the F + H_2 —> HF*+ H reaction. At high pressures laser emission was parasitized by isotropic supperadiance. The energy output was dependent on the rate of energy deposition from both flash lamp and ClN_3 explosion.

Thesis (M.S.)--University of Hawaii at Manoa, 2006. / Includes bibliographical references. / xi, 87 leaves, bound ill., maps 29 cm

Thesis--University of California, 1959. / Xerographic reproduction. Includes bibliographical references (p. 165-174).

Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references. Available also from UMI Company.

Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references (leaves 255-268). Available also in a digital version from Dissertation Abstracts.

The chemistry of stratospheric ozone is discussed and particular consideration is given to the role of chlorine compounds and to the impact of human activity on the ozone layer. An account is given of the methods used by other researchers to measure hydrogen chloride (HC1) in the stratosphere and their results are summarized. The pressure modulator radiometer (PMR) is an instrument which can be used to make remote measurements of atmospheric temperature and composition by sensing the radiation transmitted by or emitted from an atmospheric path containing gases with absorption bands in the infra-red. A balloon-borne PMR has been used to detect the absorption of solar radiation by the fundamental vibration-rotation band of HC1 at 3.5 micrometres. Using a limb scanning technique, the mixing ratio profile of HC1 has been measured over the height range, 16 to 39 km. It is shown that the amount of HC1 in an atmospheric path can be related to the PMR signals using a line-by-line method. The theory is developed in sufficiently general terms for it to be applicable to line-by-line calculations for many other gases with absorption bands in the infra-red. Consideration is given to the modelling of PMR measurements of transmission and emission both in the atmosphere and in the laboratory. The instrument used to measure HC1 is described in detail. The problems associated with the interpretation of the signals are discussed and an account of the instrument's laboratory testing is given. The reduction of the balloon flight data is described and the method used to retrieve the mixing ratio profile from the PMR signals is presented.

Thesis (Ph. D.)--Carleton University, 1993. / Also available in electronic format on the Internet.