Light emission of very low density hydrogen excited by an extremely hot light source; applications in astrophysics

@inproceedings{MoretBailly2008LightEO,
  title={Light emission of very low density hydrogen excited by an extremely hot light source; applications in astrophysics},
  author={Jacques J. Moret-Bailly},
  year={2008}
}
Stromgren studied the action of an extremely hot source on a diluted pure hydrogen cloud; a very ionized, spherical hydrogen plasma surrounded by neutral atomic hydrogen is formed. A relatively thin intermediate, partially ionized, hydrogen shell, is cooled by the radiation of the atoms. Stromgren was unaware of that this plasma, similar to the plasma of a gas laser, can be superradiant at several eigen frequencies of atomic hydrogen; the superradiant rays emitted tangentially with the sphere… CONTINUE READING

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