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Laser spectroscopic studies of the P(7) subband of the v₃ band of methane

thesis
posted on 04.04.2018, 00:00 by Graeme D. Hubbert
The P(7) subband of the v₃ absorption band of methane has been investigated by laser spectroscopoy techniques. An introduction to the infra-red vibration-rotation absrption bands of methane is given and other investigations of the v₃ band are discussed. A new method of stabilising the emission from a 3.392µ helium-neon laser has been divised using simple thermal control techniques. The stabilisation of the laser provided a source of monchromatic infro-red radiation capable of resolutions of the order of 10¯⁵ cm¯¹ . With the aid of the high resolving powers of the laser, high accuracy absorption data has been obtained over a wide range of pressures and temperatures. The lack of detailed comparisons of accurate experimental absorption coefficients with predictions from the theory is noted, and a brief review of the theory of absorption profiles which include the effects of several line broadening mechanisms is given. [...]

History

Campus location

Australia

Principal supervisor

Gordon John Troup

Year of Award

1976

Department, School or Centre

Department of Physics

Course

Doctor of Philosophy

Degree Type

Doctorate

Faculty

Faculty of Science

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