Accession Number : AD0770891
Title : Method for Automatic Control of the Process of Zone Melting without a Crucible,
Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
Personal Author(s) : Degtyarik,N. V. ; Kiselev,A. M. ; Lezhebokov,I. I. ; Naroichik,S. S. ; Nikolaev,A. A.
Report Date : 09 NOV 1973
Pagination or Media Count : 7
Abstract : The invention pertains to a process of obtaining semiconductor materials. The purpose of the invention is to increase the accuracy of controlling the process of zone melting without a crucible. This is achieved by projecting the profile of the zone located directly at the crystallization front onto a photocell photodetector which controls the ingot diameter via a servosystem beyond the crystallization front.
Descriptors : *Semiconductors, *Zone melting, Patents, Automatic, Control, Detectors, Translations, USSR
Subject Categories : Mfg & Industrial Eng & Control of Product Sys
Distribution Statement : APPROVED FOR PUBLIC RELEASE