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Spectroscopie d'émission et d'absorption infrarouge en écoulements de gaz raréfiés

Spectroscopie d'émission et d'absorption infrarouge en écoulements de gaz raréfiés PDF Author: Jonathan Thiévin
Publisher:
ISBN:
Category :
Languages : en
Pages : 173

Book Description
A high enthalpy source has been developped to heat gases up to 2000 K and to produce hypersonic flows. This prototype has been coupled to a high resolution Fourier transform interferometer for the investigation of the infrared emission of very hot gases. An experimental procedure has been developped to extract the line-by-line absorption cross sections of methane and acetylene. These data are needed to model the circumstellar envelop of brown dwarves and carbon rich stars. A multipass optical system has been designed to probe hypersonic shock layers by absorption spectroscopy. In parallel, the spectroscopy of Arn (CO2)m van der Waals complexes formed in a supersonic expansion at very low temperature was investigated.

Spectroscopie d'émission et d'absorption infrarouge en écoulements de gaz raréfiés

Spectroscopie d'émission et d'absorption infrarouge en écoulements de gaz raréfiés PDF Author: Jonathan Thiévin
Publisher:
ISBN:
Category :
Languages : en
Pages : 173

Book Description
A high enthalpy source has been developped to heat gases up to 2000 K and to produce hypersonic flows. This prototype has been coupled to a high resolution Fourier transform interferometer for the investigation of the infrared emission of very hot gases. An experimental procedure has been developped to extract the line-by-line absorption cross sections of methane and acetylene. These data are needed to model the circumstellar envelop of brown dwarves and carbon rich stars. A multipass optical system has been designed to probe hypersonic shock layers by absorption spectroscopy. In parallel, the spectroscopy of Arn (CO2)m van der Waals complexes formed in a supersonic expansion at very low temperature was investigated.
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