Method for determining the diameter of a growing monocrystal

摘要

A method and a device is provided for determining the diameter of a monocrystal growing at a crystallization boundary during the pulling of the monocrystal from a melt. The method includes imaging a part of the crystallization boundary on at least one mirror, observing the mirror image and determining the diameter of the monocrystal from the observed relative position of the crystallization boundary on the mirror image.