Predicted thermal superluminescence in low-pressure air

Details Predicted thermal superluminescence in low-pressure air Predicted thermal superluminescence in low-pressure air

2009-09-12

arxiv.org/abs/0909.2327v1

Physics

Atomic Physics

4 pages, 5 figures

Scientific paper

It is shown that due to the dissociation of the molecular oxygen it is possible to obtain inverted population in low pressure air by heating. As a result of the quenching of the corresponding levels of the atomic oxygen the thermal superluminescent radiation is generated. It has been found that the threshold of the overpopulation is exceeded at the air temperature 2300-3000 K. Using this effect a possible mechanism for the generation of the flashes of the radiation in air observed on the airframe of the space shuttle during its descent and reentry in the atmosphere is suggested.

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