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Thermovision monitoring of gas-phase fluorescence induced by cw CO2 laser radiation

✍ Scribed by J. Krása; P. Engst; M. Horák

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
666 KB
Volume
46
Category
Article
ISSN
1386-1425

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✦ Synopsis

ABSTRBCT -Applying thermovision monitoring, spatial distribution of gas-phase fluorescence in the wavelength region 2-5.4 um induced by CO d ?_ laser radiation is displayed. Experimental results demonstr te that the spat al distribution of the fluorescence is effected not only by the convection in a reaction cell but it also depends on V-T energy transfer relaxation time. Relatively slow relaxation compared to fast convection can cause that dominant portion of excited molecules is quenched on the cell walls. The used thermovision technique allows to determine both the threshold and the steady-state of convection generated by cw CO2 laser beam absorption.

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