GASEOUS LASER RESEARCH.
Interim engineering rept. no. 1, 1 May-31 Jul 64,
RAYTHEON CO WALTHAM MASS RESEARCH DIV
Pagination or Media Count:
The objective of the research effort is to achieve detailed understanding of the excitation mechanisms operative in the xenon and helium-xenon gas lasers. The method of measurement to be used in obtaining the cross sections for electron impact excitation of the various xenon levels of interest is described. A description of the first test vehicle constructed and the results of its tests are given. The basis of our Langmuir probe measurement procedure is discussed. The experimental results are given, indicating that the method chosen seems to be able to produce, in a direct fashion, reliable curves of the electron distribution function. Estimates of xenon lifetimes were obtained by means of the Bates-Damgaard approximation. An application of the rate equation and various simple assumptions were applied to the xenon system, resulting in expressions for laser power and population inversion as functions of electron density for one special case. The theory of a diffusion-controlled glow discharge was modified to include the effects of the metastables found in all the rare gases. Author