[2L01-03] Functional Materials

[2L01] Applicability study of luminescence properties of Er₂O₃ for environmental sensors in a fusion reactor

*Teruya Tanaka¹, Masahito Yoshino², Hiroyuki Sakaue¹, Daiji Kato^1,3 (1. NIFS, 2. Nagoya Univ., 3. Kyushu Univ.)

Keywords:Electrical insulating material, luminescence, Irradiation damages, Environmental sensor

In cathodoluminescence and photoluminescence spectra of Er₂O₃ materials, which has been studied as a candidate material for ceramic coatings in a liquid metal cooled fusion blanket system, intense luminescence peaks are observed in the two wavelength regions of 540-580 nm (green) and 655-690 nm (red). Since it has been revealed that the intensity balance of the luminescence peaks changes according to the crystallinities and temperatures, the applicability of Er₂O₃ materials for sensors of neutrons and temperature environments in a fusion reactor is being investigated.