Properties of plasma sheath with ion temperature in magnetic fusion devices

Liu, Jinyuan; Wang, Feng; Sun, Jizhong
January 2011
Physics of Plasmas;Jan2011, Vol. 18 Issue 1, p013506
Academic Journal
The plasma sheath properties in a strong magnetic field are investigated in this work using a steady state two-fluid model. The motion of ions is affected heavily by the strong magnetic field in fusion devices; meanwhile, the effect of ion temperature cannot be neglected for the plasma in such devices. A criterion for the plasma sheath in a strong magnetic field, which differs from the well-known Bohm criterion for low temperature plasma sheath, is established theoretically with a fluid model. The fluid model is then solved numerically to obtain detailed sheath information under different ion temperatures, plasma densities, and magnetic field strengths.


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