Effects of Fast-Ion Injection on a Magnetized Sheath near a Floating Wall

LI Jiajia; HU Zhanghu; SONG Yuanhong; WANG Younian

doi:10.1088/1009-0630/15/1/01

Plasma Science and Technology > 2013 > 15(1): 1-6. > DOI: 10.1088/1009-0630/15/1/01

LI Jiajia, HU Zhanghu, SONG Yuanhong, WANG Younian. Effects of Fast-Ion Injection on a Magnetized Sheath near a Floating Wall[J]. Plasma Science and Technology, 2013, 15(1): 1-6. DOI: 10.1088/1009-0630/15/1/01

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Effects of Fast-Ion Injection on a Magnetized Sheath near a Floating Wall

School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China

Funds: supported by the National Basic Research Program of China (Nos. 2010CB832901, 2008CB717801), the Fundamental Research Funds for the Central Universities (No. DUT10ZD111) and the Program for New Century Excellent Talents in University (NCET-08-0073)

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Received Date: December 31, 2010

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Abstract

Abstract

A fully kinetic particle-in-cell/Monte Carlo model is employed to self-consistently study the effects of fast-ion injection on sheath potential and electric field profile in collisional magnetized plasma with a floating absorbing wall. The influences of the fast-ion injection velocity and density, the magnetic field and angle θ₀ formed by the magnetic field and the x-axis on the sheath potential and electric field are discussed in detail. Numerical results show that increasing fast-ion injection density or decreasing injection velocity can enhance the potential drop and electric field in the sheath. Also, increasing the magnetic field strength can weaken the loss of charged particles to the wall and thus decrease the potential and electric field in the sheath. The time evolution of ion flux and velocity distribution on the wall is found to be significantly affected by the magnetic field
- fast ions,
- magnetized plasma,
- plasma sheath

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