POPULATION INVERSION IN A STATIONARY RECOMBINING PLASMA

Otsuka,M.: 1980, Applied Optics, 19, 3904.

Population inversion, which occurs in a recombining plasma when a stationary He plasma is brought into contact with a neutral gas, is examined. With hydrogen as a contact gas, noticeable inversion between low-lying levels of H has been found. The overpopulation density is of the order or 10^8 per cubic cm, which is much higher than that ( about 10^5 per cubic cm) obtained previously with He as a contact gas. Relations between these experimental results and the conditions for population inversion are discussed with the CR model.


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