Study and Measurement of the Periodically Varying Plasma-Parameters by Scanning Probe Technique

This paper describes a convenient and versatile electronic apparatus developed for the research on scanning probe technique used for the instantaneous measurements of periodically varying plasma parameters such as electron temperature and electron-ion densities in the laboratory and as well as in ionosphere. In this apparatus sweep pulses are applied between the probe (inserted in the plasma), at different instants relative to rise and fall of the plasma exciting field amplitude and corresponding characteristics are formed on oscilloscope, which give the instantaneous plasma parameters.