Way to sort diamonds by electrophysical properties

摘要

1. A method of sorting diamonds electrophysical properties, comprising a preliminary polarization diamonds, followed by heating at a constant rate and recording thermally stimulated depolarization currents, characterized in that the pre-polarization of the diamond produced by the X-ray irradiation at a temperature of 70-90 ° C in an electric field, after irradiation diamond is cooled in the same electric field to room temperature and then heating was started and the measurement of the thermally stimulated depolarization currents , Fit recognize diamonds in which the amount of current peaks at the maxima at 130-170 ° C and 190-230 ° C is less than the threshold velichiny.2. A method according to claim 1, characterized in that the heating rate is selected from the range of 0,2-1,0 ° C / sec, the electric field is chosen to be 0.2-2.2 kV / cm, the dose is chosen to be 7-15 g the threshold value selected from the interval (0.5-5.0) * 10A / see 3. A method according to claim 1, characterized in that the heating rate is chosen equal to 0.4 ± 0.04 ° C / s, the electric field strength is chosen equal to 0.5 ± 0.05 kV / cm, the dose is selected to be 10 ± 1 g, the threshold value selected from the interval (2,0 ± 0,5) · 10A / cm.