Effect of proton irradiation on the optical properties of coating based on ZnO powder and liquid K2SiO3

The paper presents the results of studying the effect of 3 keV solar wind protons on the optical properties of a thermal control spacecraft-intended coating based on zinc oxide powder. Upon irradiation, cation and anion vacancies and interstitial atoms form an absorption band with a maximum at 420 n...

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Bibliographic Details
Published in:Surface & coatings technology 2020-04, Vol.387, p.125548-4, Article 125548
Main Authors: Mikhailov, M.M., Lapin, A.N., Yuryev, S.A., Karanskiy, V.V.
Format: Article
Language:English
Subjects:
Absorption spectra
Elastic scattering
Energy dissipation
Free electrons
Irradiation
Optical properties
Potassium silicate
Potassium silicates
Proton
Proton energy
Proton irradiation
Solar wind
Zinc coatings
Zinc oxide
Zinc oxides
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Summary:The paper presents the results of studying the effect of 3 keV solar wind protons on the optical properties of a thermal control spacecraft-intended coating based on zinc oxide powder. Upon irradiation, cation and anion vacancies and interstitial atoms form an absorption band with a maximum at 420 nm. In the near IR region, absorption is determined by free electrons. Additionally, it has been experimentally confirmed that the ratio of energy loss caused by elastic collisions to the one caused by ionization processes decreases with increasing proton energy from 3 keV to 100 keV. •The radiation stability of the coating based on ZnO powder was studied.•The absorption band at 420 nm appears upon irradiation with protons.•This band is pre-determined by the defects in both sublattices of zinc oxide.•In the near-IR, absorption is pre-determined by ionization-induced free electrons.•Changing proton energy to 100 keV increases energy loss spent on ionization.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2020.125548