TIME RESOLVED MEASUREMENTS OF ELECTRON NUMBER DENSITY AND ELECTRON TEMPERATURE USING LASER INTERFEROMETRY AT 337-μm WAVELENGTH

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Abstract
An experiment is described where a cw HCN laser working primarily at 337-μm wavelength was used as the source of a Mach-Zehnder interferometer for the study of plasma decay in the electron number density region 5 · 1015 > ne > 5 · 1013 cm−3. It was found that an estimate of the electron temperature in the range 103−104°K could also be made from the amplitude of the interferometer fringes.