Analytical and numerical calculation of purification of simple crystal substrates by a method of zonal melting with a fixed size of an ingot. (On the example of bismuth)

V.I. Bochegov, A.S. Parakhin

KEY WORDS:

purification, zonal melting, distribution coefficient, bismuth.

ABSTRACT:

The theory of analytical evaluation for the deep zone purification with multiple pass of the zone for the simple substances was considered in approximation: of low admixtures concentrations in the raw material; of low crystallization rate; in the long-length ingot with constant cross-section and finite length; with invariable size of molten zone.