V. Rousseau et al., ELECTRON-DENSITY DETERMINATION USING PHASE MEASUREMENT IN A PULSED SURFACE-WAVE DISCHARGE AT HIGH-PRESSURE, Journal of applied physics, 75(3), 1994, pp. 1846-1848
This paper deals with the determination of electron density in a pulse
d surface wave discharge (frequency omega/2 pi=1.1 GHz, pulse duration
tau similar to 10 mu s), in an air-like mixture at about 10 Torr in a
capillary tube (inside diameter 1.5 mm). A time-resolved diagnostic b
ased on microwave interferometry is developed. It is shown that it pro
vides both the collision frequency nu and the electron density n(e) ex
cept when nu/omega exceeds a certain value (5 for these operating para
meters).