A coupled EDDY/PIC/ELECTRAN simulation of erosion and deposition in gaps
A coupled EDDY/PIC/ELECTRAN simulation of erosion and deposition in gaps
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DOI：
10.1016/j.fusengdes.2010.03.068
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发表时间：
2010-12
影响因子：
1.7
通讯作者：
K. Inai;Y. Tomita;G. Kawamura;K. Ohya
中科院分区：
文献类型：
--
作者：
K. Inai;Y. Tomita;G. Kawamura;K. Ohya
To calculate complex plasma profiles in the gaps, the ELECTRAN code, which calculates secondary electron (SE) emission from metals, was combined with a two-dimensional kinetic code using the particle-in-cell (PIC) technique. We also performed a simulation of carbon/hydrocarbon deposition and re-erosion in the gaps on the condition that the plasma density and temperature were 1018m−3and 30eV, respectively. A high flux of plasma ions occurred at the plasma-open side of the poloidal gap and at the E×B drift side of the toroidal gap. Although most of the carbon was redeposited at the side surface near the gap entrance, the redeposited carbon was re-eroded there due to plasma ion bombardment. As a result, erosion dominated at the plasma-open area near the gap entrance, whereas deposition dominated in deep regions.
