Theoretical Consideration for Experimental Results on CO_2 Gas-Dynamic Laser
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概要
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Basic characteristics of CO_2 gas-dynamic laser (GDL) are investigated theoretically. A simplified theoretical model of vibrational relaxation processes is proposed. The population inversion and the small signal gain of the CO_2 GDL are calcultated by using this model. The results are compared with the previous experimental results (J. Phys. Soc. Japan 36 (1974) 880). It is confirmed that the vibrational relaxation processes in the CO_2 GDL may be considered as the combination of the relaxation processes in a constant-temperature condition and the gasdynamic cooling processes in a supersonic nozzle flow. In addition, it is found that the Schwartz-Slawsky-Herzfeld (SSH) theory on the temperature dependence of vibrational relaxation times is approximately valid even in a low temperature region below 300 K. It is also suggested that the values of vibrational relaxation time under the condition of rapid cooling are much shorter (by a factor of 10 to 100) than those in heating phase.
- 社団法人日本物理学会の論文
- 1975-11-15
著者
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Sato Kohnosuke
Department Of Physics Faculty Of Science University Of Tokyo:(present Address)institute Of Plasma Ph
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Sato Kohnosuke
Department Of Physics Faculty Of Science University Of Tokyo
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Sato Kohnosuke
Department Of Physics Faculty Of Science University Of Tokyo:(present Address) Institute Of Plasma P
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SEKIGUCHI Tadashi
Department of Electrical Engineering, University of Tokyo
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Sekiguchi Tadashi
Department Of Electrical Eng. University Of Tokyo
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