The correct assessment of the risks of reducing or losing the functionality of the open surfaces and instruments of the spacecraft is based, inter alia, on laboratory tests of the resistance of the relevant materials to the impact of particles simulating the flow of solid particles in laboratory conditions. In this work, the charge spectrum of PAP-1 aluminum dust particles was obtained using a stand consisting of an electrostatic injector, a parameter control unit, and a research chamber. The experimental spectrum was also correlated with the theoretical one. The distributions of such physical parameters of particles as size, velocity, and mass are obtained.
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$^2$Physics Faculty of M.V. Lomonosov Moscow State University
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