%0 Journal Article %A WANG Xu-dong %A YI Zhong %A SHEN Zi-cai %A GU Peng-fei %T Proton Radiation Damage in ZnO-pigmented White Paints and Optical Degradation Mechanisms %D 2013 %R 10.3969/j.issn.1001-4381.2013.05.001 %J Journal of Materials Engineering %P 1-5 %V 0 %N 5 %X S781 white paints were irradiated with 150-keV protons in a simulated space environment, in order to elucidate more definitely the irradiation damage and optical degradation mechanisms for ZnO-pigmented white paints. After proton irradiations, the degradation in spectral reflectance and solar absorptance was measured in situ. The interaction between the protons and S781 white paints, and the irradiation-induced defects, were also studied through simulations and photoluminescence. The results show that the zinc vacancies in the 1-charge state are due to the ionization of the ZnO pigments, and are responsible for the b band absorption and optical degradation. Furthermore, this work also supports the first-principles results of considering zinc vacancies as the defects responsible for the green luminescence band from ZnO. %U https://jme.biam.ac.cn/EN/10.3969/j.issn.1001-4381.2013.05.001