Method for measuring vibrational temperatures in CO/sub 2/ gasdynamic lasers

Journal Article · Sat Mar 31 23:00:00 EST 1979 · Sov. J. Quant. Electron. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1070/QE1979v009n04ABEH008900· OSTI ID:5948586

Kudryavtsev, N N; Novikov, S S; Svetlichnyi, I B

A method is developed for measuring the vibrational temperatures of the asymmetric vibration mode T/sub 3/ and both symmetric modes T/sub 2/ of the CO/sub 2/ molecules under gasdynamic laser resonator conditions. The method involves simultaneous measurement of the gain at the wavelength 10.6 ..mu.. and the spontaneous emission intensity in the 4.3 ..mu.. band of carbon dioxide using the vibrational--rotational band theory in the calculations. The results of measurements of the vibrational temperatures T/sub 3/ and T/sub 2/ in a supersonic stream of 0.05CO/sub 2/ + 0.05N/sub 2/ + 0.2CO + 0.7He laser active mixture are presented and the errors of the method are analyzed.

• Research Organization: Institute of Chemical Physics, USSR Academy of Sciences, Moscow
• OSTI ID: 5948586
• Journal Information: Sov. J. Quant. Electron. (Engl. Transl.); (United States), Journal Name: Sov. J. Quant. Electron. (Engl. Transl.); (United States) Vol. 9:4; ISSN SJQEA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CARBON DIOXIDE LASERS
ENERGY LEVELS
EXCITED STATES
GAIN
GAS LASERS
LASERS
TEMPERATURE MEASUREMENT
VIBRATIONAL STATES