A finite element procedure for radio-frequency sheath-plasma interactions in the ion cyclotron range of frequencies

作者：Kohno H^*; Myra J R; D'Ippolito D A

来源：Computer Physics Communications, 2012, 183(10): 2116-2127.

DOI：10.1016/j.cpc.2012.05.014

• Plasma waves
• Radio-frequency sheaths
• Cold plasma
• Magnetic confinement fusion
• Finite element method
• High performance computing

A numerical code that solves self-consistent radio-frequency (RF) sheath-plasma interactions in the ion cyclotron range of frequencies is developed based on a nonlinear finite element technique. The present code solves for plasma waves based on the cold plasma model subject to a sheath boundary condition. The finite element procedure has been implemented for one- and two-dimensional analyses using simplified models for the poloidal plane of a tokamak. The results show good accuracy and generalize previous analytical calculations. The present algorithmic approach shows promise for developing a code to predict RF sheath potentials in the scrape-off layer of RF-heated fusion experiments.

• 出版日期2012-10