Laser Induced Fluorescence Combined with Laser Absorption Spectroscopy for Optically Thick Plasma Diagnostics

2012 ◽  
Author(s):  
Tsuyoshi Kaneko ◽  
Satoshi Nomura ◽  
Kimiya Komurasaki ◽  
Hiroyuki Koizumi
Keyword(s):  
Absorption Spectroscopy ◽  
Plasma Diagnostics ◽  
Laser Induced Fluorescence ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption

scholarly journals Diode-Laser Induced Fluorescence Spectroscopy of an Optically Thick Plasma in Combination with Laser Absorption Spectroscopy

2013 ◽  
Vol 2013 ◽  
pp. 1-5
Author(s):  
S. Nomura ◽  
T. Kaneko ◽  
G. Ito ◽  
K. Komurasaki ◽  
Y. Arakawa
Keyword(s):  
Absorption Spectroscopy ◽  
Laser Intensity ◽  
Argon Plasma ◽  
Laser Induced Fluorescence ◽  
Probe Laser ◽  
Abel Inversion ◽  
Measurement Point ◽  
Laser Absorption Spectroscopy ◽  
Saturated Absorption ◽  
Laser Absorption

Distortion of laser-induced fluorescence profiles attributable to optical absorption and saturation broadening was corrected in combination with laser absorption spectroscopy in argon plasma flow. At high probe-laser intensity, saturated absorption profiles were measured to correct probe-laser absorption. At low laser intensity, nonsaturated absorption profiles were measured to correct fluorescence reabsorption. Saturation broadening at the measurement point was corrected using a ratio of saturated to non-saturated broadening. Observed LIF broadening and corresponding translational temperature without correction were, respectively,2.20±0.05 GHz and2510±100 K and corrected broadening and temperature were, respectively,1.96±0.07 GHz and1990±150 K. Although this correction is applicable only at the center of symmetry, the deduced temperature agreed well with that obtained by LAS with Abel inversion.

INTRACAVITY LASER ABSORPTION SPECTROSCOPY OF NO2 AND CH4 COOLED IN A SLIT JET SUPERSONIC EXPANSION

1991 ◽  
Vol 01 (C7) ◽  
pp. C7-471-C7-476
Author(s):  
A. CAMPARGUE ◽  
M. CHENEVIER ◽  
A. DELON ◽  
R. JOST ◽  
F. STOECKEL
Keyword(s):  
Absorption Spectroscopy ◽  
Laser Absorption Spectroscopy ◽  
Supersonic Expansion ◽  
Laser Absorption ◽  
Intracavity Laser

Monitoring the Fractional Distillation Purification of Inorganic Hydrides by Diode Laser Absorption Spectroscopy

2020 ◽  
Vol 56 (12) ◽  
pp. 1284-1289
Author(s):  
Ya. Ya. Ponurovskii ◽  
D. B. Stavrovskii ◽  
Yu. P. Shapovalov ◽  
M. V. Spiridonov ◽  
A. S. Kuz’michev ◽  
...  
Keyword(s):  
Diode Laser ◽  
Absorption Spectroscopy ◽  
Fractional Distillation ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption ◽  
Diode Laser Absorption
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