Analysis of errors in the plasma rotation velocity measurement by the method of microwave correlation reflectometry

Abstract

The investigation of the rotating plasma is of interest for solving a wide range of scientific and applied problems in the plasma physics. To investigate the multicomponent gas-metal plasma the most preferable are the methods of measurement without contact: optical and microwave correlation and Doppler reflectometry [1]. In the plasma investigations the microwave correlation reflectometry (MCR) has been used rather frequently, however, in the most of cases the errors of plasma rotation velocity measurements were not analyzed. The estimation of the accuracy of the plasma rotation velocity by MCR is an intricate problem which should be solved individually in every particular case with taking into account the measuring circuit, plasma characteristic and structural specificity of the experimental facility. In the present paper we consider some typical measurement errors of the rotation velocity by the MCR method and estimate the measurement errors of the monocomponent plasma rotation velocity upon the pulsed reflex discharge.