System for the in-situ visualization of a solid liquid interface

Details System for the in-situ visualization of a solid liquid interface System for the in-situ visualization of a solid liquid interface

1989-11-09

1991-08-06

Kunemund, Robert

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including specific material of construction

422106, 422109, 156601, 1566161, 1566164, 156DIG71, 156DIG72, 156DIG77, 156DIG92, C30B 1102, C30B 3500

Patent

active

050376217

ABSTRACT:
A system for visualizing the solid-liquid interface of a growing crystal in-situ using a modified vertical Bridgman crystal growth method. An infrared source emits radiation which passes through a furnace window, the crystal material and the growth ampoule which are all transparent to the radiation and is picked up by an IR camera focused on the solid-liquid interface. The IR camera produces radiographs of the solid-liquid interface. The system provides in-situ operation by every radiograph being converted into a visible image in real time by the output from the camera fed to an image processor, including a television monitor and a VHS recorder. A feedback means from the image processor controls the parameters of the growth process such as the furnace temperature and the movement of the growth ampoule.

REFERENCES:
patent: 3493770 (1970-02-01), Dessauer et al.
patent: 3740563 (1973-06-01), Reichard
patent: 3926566 (1975-12-01), Spurney
patent: 4058429 (1977-11-01), Duncan et al.
patent: 4197273 (1980-04-01), Dusserre et al.
patent: 4350557 (1982-09-01), Scholl et al.
patent: 4623423 (1986-11-01), Aubert et al.
Kennedy et al., "Growth and Characterizations of CdZnTe and HgZnTe", Jour of Crystal Growth, vol. 86 (1988), pp. 93-99.

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