PROCEDE DE REGULATION DE LA CROISSANCE DE CRISTAUX DE QUARTZ SYNTHETIQUES PAR ORDINATEUR

摘要

A computer-controlled, hydrothermal, crystal-growing process, for example, for growing synthetic quartz crystals of uniformly high Q. The disclosure includes a mathematical model of the crystal-growing autoclave and an algorithm by which a digital, process-control computer can make adaptive changes to the currents supplied to heating elements associated with the upper and lower zones of the autoclave, during the 25 day growth cycle, to yield a superior crystal of high Q.