HEAT WAVE OF EXCITATION OF HOT CENTERS DURING EXPLOSIVE CRYSTALLIZATION OF AMORPHOUS FILMS
A thermophysical description of the process of exciting hot crystallization centers in an amorphous film sprayed on a substrate is given at a qualitative level. Analytical dependencies are obtained that determine space-time fluctuations of the thermal field between weak and strong breaks running before the crystallization front and exciting hot centers. Threshold value of frequency of excitation oscillations separating stable and unstable modes of propagation of these mobile boundaries is calculated. Temperature runout near stability/instability boundary detected. As a result of numerical calculations, amplitude-frequency properties of the process of excitation of hot centers in the amorphous germanium film at different temperatures of the substrate are determined.