Composite material for protection of spacecraft electronics against ionizing radiation

The problem of protection of spacecraft electronics against ionizing radiation is reviewed. The goal of the work is to develop and study the multiphase heterogeneous materials for shielding of spacecraft electronics on the geostationary orbit. The subject of the study is disperse-filled polymer composite materials and the objects of the study are the processes of interaction of electron radiation with the mentioned materials. The imitative irradiation method of samples of the composite materials was used in the study. Simulating of electron transmission through the samples of the composite materials was made with Monte-Carlo method. The results of the study demonstrate that shielding ability of the developed samples of the composite materials is no less than 30 % greater as compared with aluminum at the equal mass thickness. The developed composite materials can be applied in the systems of passive shielding of the spacecraft electronics on geostationary orbit.