Review on Gradual Development and Successive Modification in the Langmuir Probe Technique for Measurement of Plasma Parameters Since 1924

Abstract

This paper briefly reviews the contributions of single Langmuir probe diagnostic method [1] and its further development [1-11] for the detection of plasma parameters a number of modifications to the conventional Langmuir probe technique have been developed with the objective of reducing the current drain from the plasma by the probe system. these include the floating double probe [3,4,5] and the triple probe [4,8]. In spite of these, studies were made keeping the probe in various orientation (transverse and longitudinal) and in presence of magnetic field [7,10,11]. The variations of plasma temperature in different gases were also studied.