BREMSSTRAHLUNG FORMATION IN THE DUAL ENERGY METHOD FOR RADIOGRAPHY OF THE UNAUTHORIZED EMBEDDING

The possibility of an effective method of dual-energy radiography unauthorized inclusions containing heavy elements in cargo containers has been investigated. A method for optimizing the energy performance of the bremsstrahlung radiation: low-energy beam (containing the maximum number of photons in the energy range, which is dominated by Compton effect) and high energy beam (with a maximum number of high-energy photons, electron-positron pairs) has been developed. The influence of the converter thickness and converter material on the spectral characteristics of the beams of photons has been investigated. The variants of treelayers efficient converters have been proposed. On the basis of the Monte Carlo and quasi-analytical method a numerical experiment radiography investments has been completed. It is shown that the use of optimally shaped beams can reliably distinguish embedding from lead to masking the background of steel structures up to 25 cm