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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 18: Focus Session: Diamond and related dielectric materials

KFM 18.1: Invited Talk

Wednesday, September 7, 2022, 15:00–15:30, H5

Deep understanding of advanced optical and dielectric materials for fusion diagnostic applications — •Anatoli I. Popov¹, E Kotomin¹, V Kuzovkov¹, A Lushchik², and Theo A Scherer³ — ¹Institute of Solid State Physics, University of Latvia, 8 Kengaraga str., LV-1063 Riga, Latvia — ²Institute of Physics, University of Tartu, W. Ostwald Str. 1, 50411, Tartu, Estonia — ³Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany

In this talk, I will give a short overview of the most interesting results obtained in the framework of two EUROfusion Enabling Research projects - Advanced experimental and theoretical analysis of defect evolution and structural disordering in optical and dielectric materials for fusion applications (AETA) (2019-2020) and Investigation of defects and disorder in nonirradiated and irradiated Doped Diamond and Related Materials for fusion diagnostic applications (DDRM) Theoretical and Experimental analysis (2021-2023).

In a series of joint works by ISSP UL (Latvia), UT (Estonia), and KIT (Germany), radiation damage of some promising functional materials (Al2O3, MgAl2O4, SiO2, and diamond) from the priority list of the EUROfusion consortium was studied under neutron, proton, heavy-ion. Their optical, dielectric, vibrational & magnetic properties were carefully studied. Based on this study, we developed new theoretical methods able to evaluate and predict some important properties of these materials as well as their radiation damage evolution under extreme reactor conditions.