Abstract
The method for determining the effective atomic number and surface density of filters based on x-ray absorption data in a linear multichannel detector material is considered in this paper. Data on the absorption of radiation is proposed to consider as the coordinates of vectors in the spectrozonal space. It is shown that the relative change in length and the angle of divergence of the vectors can be used as criteria for the calibration of the spectrozonal recording system. Calibration characteristics are obtained for the mathematical model of the spectrozonal recording system. Calibration was performed for filters from materials with a priori given effective atomic numbers from 6 to 40 with a surface density of from 0.05 to 1.5 g/cm2. It has been established that in the calibration range, the deviations of the measured values of the parameters of the filters do not exceed 10 % by the effective atomic number and 30 % by the surface density. The proposed measurement method can be used to quantify the mineralization of the charge materials, in the separation of minerals, or to search for prohibited inclusions in covering environments. The efficiency of the technique can be achieved by optimizing the dimensionality of the spectrozonal space and choosing the conditions for the excitation of the primary radiation beam.
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