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Application of Magnetized Coaxial Plasma Guns for Simulation of Transient High Heat Loads on ITER Divertor
Author(s) -
Nagata Masayoshi,
Kikuchi Yusuke,
Fukumoto Naoyuki
Publication year - 2009
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.20438
Subject(s) - divertor , plasma , coaxial , vaporization , materials science , tungsten , nuclear engineering , transient (computer programming) , dense plasma focus , atomic physics , calorimeter (particle physics) , electrical engineering , physics , nuclear physics , thermodynamics , optics , tokamak , engineering , computer science , metallurgy , operating system , detector
Abstract The magnetized coaxial plasma gun (MCPG) was investigated to seek possibilities of its application for a transient high heat testing to the ITER divertor surfaces. The experimental results showed that the MCPG could generate the hydrogen plasma stream with the ion energy of 50 eV, the peak energy density of 0.7 MJ/m 2 and the discharge duration of ∼0.05 ms. This capability is enough powerful to melt tungsten materials. Vaporization of a thin surface layer and a cloud of dense vapor plasma in front of the carbon calorimeter were observed by spectroscopic measurements. © 2009 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.