Multifunctional composite charcoal-containing microwave and X-ray radiation absorbers

Abstract

The article presents multifunctional composite absorbers of microwave and X-ray electromagnetic radiation proposed and developed by authors. Compared with the analogs, these absorbers contain powdered activated charcoal as the component absorbing microwave electromagnetic radiation energy and powdered barium sulfate as the component absorbing X-ray electromagnetic radiation energy. The absorbers are three-layer ones. It was established that microwave electromagnetic radiation absorption coefficient values of the absorbers containing the powdered activated birch charcoal vary from 0.5 rel. units up to 0.92 rel. units in the frequency bands 3.57.0 GHz, 10.8 14.2 GHz, and microwave electromagnetic radiation absorption coefficient values of the absorbers containing the powdered activated coconut charcoal vary within the specified limits in the frequency bands 5.07.5 GHz, 10.217.0 GHz. The values of X-ray attenuation coefficient provided by the absorbers vary from 2.0 to 8.7 rel. units. These absorbers can be used to cover the walls of rooms where X-ray machines are located. This will ensure a reduction in the degree of influence on these devices, as well as computer equipment connected to them, of microwave electromagnetic radiation from external sources, as well as a reduction in the degree of influence of X-ray radiation generated by these devices on electronic devices and on people who are outside the specified rooms.