Radiation stability of the yttrium oxide optical properties measured in vacuum at the irradiation site

Статья в журнале

The article is focused on the results of diffuse reflectance spectra measurement for the industrially manufactured yttrium oxide powder in the UV, visible, and near IR regions. The Y2O3 powder was irradiated with 30 keV electrons. The reflectance spectra were recorded after each irradiation period at the irradiation site without removing the sample from the vacuum chamber. It was established that yttrium oxide demonstrates high reflectance (>85–90 %) from 230 to 2500 nm. A very low solar absorptance was achieved as a result (0.059). The most notable irradiation-induced degradation of the reflectance spectra occurred in the UV region where the solar electromagnetic emission intensity was low. The degradation localized in UV region allowed for obtaining high radiation stability of Y2O3 compared with other white reflective powders. Thus, yttrium oxide powder seems to be an efficient candidate for the development of thermal control coatings of spacecraft and other reflective coatings applied in radiation-induced environments.

Журнал:

• Radiation Physics and Chemistry
• Elsevier Ltd. (Abriach)
• Индексируется в Scopus, Web of Science

Библиографическая запись: Mikhailov M. M. et al. Radiation stability of the yttrium oxide optical properties measured in vacuum at the irradiation site //Radiation Physics and Chemistry. – 2025. – С. 113390.

Индексируется в:

• Scopus ( https://www.sciencedirect.com/science/article/pii/S0969806X25008825 )
• Web of science ( https://www.sciencedirect.com/science/article/pii/S0969806X25008825 )