Speaker
Description
Radiation effects in functional dielectric and optical materials for EUROfusion applications (MgF2, LaAlO3, LiAlO2 etc) as well as in some relevant scintillators for high-energy physics (Gd3Ga5O12, BaF2) irradiated by swift heavy ions with fluencies ranging from 6·1010 to 2·1012 ions/cm2 have been studied. A stable strong induced absorption observed in the visible spectral range correlates with the irradiation fluence. It is shown that several structural point defects are responsible for this induced optical absorption. It will be demonstrated that the swift heavy ions irradiation strongly modifies the luminescence properties of considered materials, namely, their excitation spectra, which have been measured over a wide spectral range including vacuum ultraviolet diapason. The reasons leading to the alteration in the luminescence properties of irradiated single crystals are elucidated and discussed.
| Section | Energy and materials science (Section 2) |
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