Acceleration of Dust Particle in SOL/Divertor Plasma of HL-2A

作者：Tomita, Yukihiro^*; Kawamura, Gakushi; Pan Yudong; Zhou Yan; Yan Longwen

来源：Plasma Science and Technology, 2009, 11(4): 427-429.

DOI：10.1088/1009-0630/11/4/12

• dust particle
• HL-2A
• poloidal flow
• B2-EIRENE

Acceleration of a dust particle in the SOL (scrape-off layer)/divertor plasma of HL-2A with a single-null configuration is studied. A simplest model of the dust dynamics is applied, namely spherical shape of a dust, ion drag force due to Coulomb scattering as a dominant force, and spontaneous charging of a dust particle to the equilibrium charge. In the outer region near the plasma-facing wall the poloidal plasma flow pushes the dust particle to the divertor plates. It is clarified that the dust particle with a radius of 1 mu m from the top of the SOL/divertor region is accelerated up to around 100 m/s at the divertor plates along the poloidal direction.

• 出版日期2009-8
• 单位核工业西南物理研究院