Temperature field in the interaction region of high-enthalpy plasma stream and graphite surface

Abstract

Study of heat and mass transfer process in the interaction zone between subsonic plasma jet and surface of sublimating heat-resistant sample us one of current interest topics of contemporary thermophysics and physics of heterogeneous plasma. Despite a large number of works being performed in recent years, many fundamental problems have yet to get an adequate solution or even to be tackled yet. The challenge of determining plasma parameters in the boundary region of plasma jet wrapping around the solid surface is one of these problems. This work presents first results of experimental determination of electron, atomic and molecular plasma component temperature fields in the deceleration area of the plasma jet hitting the surface of sublimating heat-resistant sample. One of the important aspects of this work is selection and rational of spectral diagnostics methods with high spatial and temporal resolution based on analysis of nonequilibrium atomic-molecular plasma kinetics.