Au-Isomer Industrial Gold ore assay system GAMMA ACTIVATION ANALYSIS OF GOLD ORES

Application

Gamma activation analysis (GAA) is an irradiation of large-mass ore samples (300-500 g) with high-energy gamma quanta, generated by linear electron accelerator (LINAC), followed by recording the induced activity of excited gold nuclei (isomers) using a gamma spectrometer.

Features

• The ability to analyze large ore samples with a volume of 300-500 cm^3;
• Feasibility to analyze ore particles with sizes up to 3.0 mm, due to high penetrating power of gamma radiation;
• Analysis duration does not exceed 20-30 s, thanks to short half-life of excited gold nuclei;
• High representativeness of GAA in comparison with chemical analysis;
• Guaranteed high sensitivity and accuracy of analysis;
• High analysis selectivity, due to using large-area high-resolution semiconductor detectors;
• High productivity of analysis (up to 1000 analyzes per day);
• Non-destructive nature of analysis, thereby the analysis can be repeated many times;
• Analysis results practically do not depend on chemical composition of a sample;
• Induced activity of the sample decreases to background levels in several minutes after the analysis is finished;
• The ability to analyze other elements simultaneously with gold (Ag, Cu, Se, Br, Ba, Y, Pb, Hf, W, etc.).