DEVICE FOR GROW thin-walled hollow tubular crystalline BODIES.

摘要

Apparatus for growing hollow tubular crystalline bodies from the melt includes, in a preferred embodiment, a capillary die of the desired shape, a seed holder having a cross section of similar shape and to which a plurality of elongate seeds may be attached, and an inner after heater of substantially similar shape but smaller size supported from the die by an inner radiation shield.