MODELING THE IMPACT OF COSMIC RADIATION ON POLYMER COMPOSITES USING THE SOFTWARE SECTOR GEANT4
The results of physical-mathematical modeling of the impact of a beam of fast electrons with energies between 1 and 2 MeV in the highly filled polymer composites (PC) with the application software package with Geant4 Monte Carlo method. The target used for the calculation of the PC-based high-impact polystyrene (HIPS) and organo-siloxane xerogel-filler metilpolisiloksana (ILAC). Content of filler in the composite was 60%. Input data for modeling: geometry of the target - a cylinder with a radius of 15 mm and 10 mm thick, the beam cross section 20 × 20 mm with an energy of 1..2 MeV incident on the target normal to the surface of the beam fluence of 1,2 el./mm2. Effektivny electron range in the PC up to 1 MeV – 3,9 mm to 1.5 MeV – 6,2 mm to 2 MeV – 8,7 mm. depth of maximum concentration of the stored energy in the composite for the electrons with energy of 1 MeV is 1,5 mm and 1,5 MeV – 2,7 mm, with 2 MeV – 4,6 mm. Due to the high radiation resistance of the developed composites of these materials may find applications in materials science in space as a thermal control coatings.