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The influence of gas residence time, turbulence, and discharge uniformity on the electrical power density threshold for glow constriction has been investigated for conditions typical of high-power cw convection-cooled molecular lasers. Relatively independent evaluation of the effect of these properties indicated that each has an important bearing on plasma stability. Reduction of fluid residence time in the discharge region was found to result in an approximately proportionate increase in the electrical power density at which constriction occurred in CO2 laser mixtures for pressures in the 20–200-Torr range.
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Wiegand et al. (1975) studied this question.
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