Abstract:
The effect of synthesizing diamond under high temperature and high pressure by low-frequency (50 Hz) heating differs from that of by industrial frequency heating. For industrial frequency heating, the constant heat is imported into the cell and the temperature is a spatial l distribution, while for low frequency heating, the pulsed heat is imported into the cell, and the temperature changes not only with spatial distribution but also with time in the cell. Some experimental phenomena and results are explained by temperature changes with time.