Аннотация:Oxygen plasma beam technique adaptability is examined to polymers atomic oxygen resistance testing. Results of measure of erosion yield of polymeric spacecraft materials under the impact of plasma beam atomic oxygen with energies 20-40 eV are presented. It was demonstrated that oxygen plasma beams can be used in accelerated tests of carbon-based and polymeric material (with the exception of unfilled and fluorinated hydrocarbons) to evaluate their AO erosion yield in LEO