Estimation of the radial temperature profile in systems for crystal growth

In the present paper a system for crystal growth by the Bridgman method has been investigated. Direct temperature measurements in a system of this type involve many technical problems. Therefore, there is a need to search for indirect methods for determination of the temperature in different regions during the process of crystal growth. A model and a method have been proposed for the approximate estimation of the temperature within the active zone. A quasistationary mode of operation has been studied so that the conditions for cooling, insulation and heating in the transition region can be investigated in dependence on the applied thermal flow as well as at different temperatures of the zone. The influence of various materials and constructional dimensions can be studied, and two melt phases can be predicted. The application of the method has been illustrated by actual calculations.