Binary-collision-approximation simulation for noble gas irradiation onto plasma facing materials

2nd International Conference on Mathematical Modeling in Physical Sciences 2013

物理学;数学

Saito, Seiki^1,3 ; Nakamura, Hiroaki^1,2,3 ; Takayama, Arimichi^2 ; Ito, Atsushi M.^2

Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Toki, Gifu 509-5292, Japan^1

Fundamental Physics Simulation Research Division, National Institute for Fusion Science, Toki, Gifu 509-5292, Japan^2

Present Address: Department of Electrical Engineering, Kushiro National College of Technology, Otanoshike-Nishi 2-32-1, Kushiro-Shi, Hokkaido, Japan^3

关键词: Binary collision approximations;    Experimental conditions;    Gas irradiation;    Helium plasmas;    Nano-meter scale;    Plasma facing materials;    Plasma irradiations;    Tungsten materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/490/1/012169/pdf
DOI  :  10.1088/1742-6596/490/1/012169

来源: IOP

【 摘 要 】

A number of experiments show that helium plasma constructs filament (fuzz) structures whose diameter is in nanometer-scale on the tungsten material under the suitable experimental condition. In this paper, binary-collision- approximation-based simulation is performed to reveal the mechanism and the conditions of fuzz formation of tungsten material under plasma irradiation. The irradiation of the plasma of hydrogen, deuterium, and tritium, and also the plasma of noble gas such as helium, neon, and argon atoms are investigated. The possibility of fuzz formation is discussed on the simulation result of penetration depth of the incident atoms.