Influence of the Flux Density,the Flux,and the Energy of Electrons on the Change in the Optical Properties of ZnO + K2SiO3 Coatings

The change in the diffusion reflection spectra and the total solar radiation absorption coefficient as by a reflecting heat-regulating coating (HRC) fabricated from ZnO pigment and K₂SiO₃ liquid potash glass in the People's Republic of China is investigated as a function of the flux density , the flux , and the energy E of electrons. The established regularities in the changes of a _s and under irradiation provide additional information on the formation of color centers (CC) in these systems and correlate with the results obtained previously for coatings fabricated in Russia.     

Optical Degradation of a Fluoroplastic Coating Placed in a Geostationary Orbit

The results of ground-based tests of coatings under separate irradiation by electrons and protons with energies of several tens of kiloelectronvolts and under simultaneous irradiation by electromagnetic radiation with spectrum close to the solar one and by electrons, which imitate field conditions, are presented. Changes in the total solar radiation absorption coefficient have been predicted for a 30-year period of operation of the reflecting heat-regulating coating prepared from F4MB-grade fluoroplastic with deposited aluminum and placed in a geostationary orbit. The prediction is made under a special program which allows an optimal solution to be chosen from a set.