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Your search keyword '"Niu, Guojian"' showing total 8 results
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8 results on '"Niu, Guojian"'

2. Experimental study of the influence of gas puff locations on H-mode boundary plasmas with argon seeding on EAST

Author

He, Tao, primary, Yang, Zhongshi, additional, Wang, Liang, additional, Li, Kedong, additional, Wang, Huiqian, additional, Eldon, David, additional, Hyatt, Alan, additional, Humphreys, David, additional, Meng, Lingyi, additional, Ding, Fang, additional, Wang, Yuming, additional, Duan, Yanmin, additional, Zhang, Ling, additional, Xu, Jichan, additional, Luo, Yu, additional, Ye, Dawei, additional, Chen, Xiahua, additional, Yang, Qingquan, additional, Nian, Feifei, additional, Niu, Guojian, additional, Xu, Guosheng, additional, and Luo, Guang-Nan, additional

Published
2021
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3. A Molecular Dynamics Study on the Dust-Plasma/Wall Interactions in the EAST Tokamak

Author

Niu Guojian (牛国鉴), Luo Guangnan (罗广南), Hong Rongjie (洪荣杰), and Yang Zhongshi

Subjects
Tokamak, chemistry.chemical_element, Radius, Plasma, Tungsten, Edge (geometry), Condensed Matter Physics, Deuterium plasma, law.invention, Ion, Molecular dynamics, chemistry, law, Atomic physics
Abstract

The interactions between the W nano-dust and deuterium plasma at different locations of the EAST tokamak are simulated using a molecular dynamics code. It is shown that nano-dust particles, with the radius, Rd, ~5 nm, can exist for at least several nano-seconds under the interactions from the ions without being ablated in some specific places of the tokamak edge plasma, while those with Rd ≥25 nm may be ablated if the plasma temperature T~ 50 eV and density n~1019 m−3. In addition, the collisions of tungsten nano-dust grains with a tungsten wall at 100 m/s or 1000 m/s impinging speeds are simulated. It is demonstrated that the dust will stick to the wall, and the collision will not cause substantial damage to the wall, but it may be able to cause partial destruction of the dust grains themselves depending on their incident speeds.

Published
2013

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