Radio-frequency sheath-plasma interactions with magnetic field tangency points along the sheath surface
Radio-frequency sheath-plasma interactions with magnetic field tangency points along the sheath surface
复制标题
射频鞘-等离子体与沿鞘表面的磁场切点的相互作用
DOI：
10.1063/1.4818991
复制
发表时间：
2013
影响因子：
2.2
通讯作者：
D. D'Ippolito
中科院分区：
文献类型：
--
作者：
H. Kohno;J. Myra;D. D'Ippolito
射频（RF）波传播的二维（2D）磁场到导电边界的计算机模拟。在金属表面处的RF场的边界条件导致RF鞘层的形成，这在以前已经在一维模型中进行了研究。在这个二维的研究中，它被发现，快速变化的条件沿着鞘表面促进耦合的入射RF分支（无论是快波或慢波）的短尺度长度鞘等离子体波（SPW）。SPW在由磁场相对于表面的取向所指示的特定方向上沿着护套表面传播，并且SPW中的波能量在背景磁场与表面相切的位置附近积累。
Computer simulations of radio-frequency (RF) waves propagating across a two-dimensional (2D) magnetic field into a conducting boundary are described. The boundary condition for the RF fields at the metal surface leads to the formation of an RF sheath, which has previously been studied in one-dimensional models. In this 2D study, it is found that rapid variation of conditions along the sheath surface promote coupling of the incident RF branch (either fast or slow wave) to a short-scale-length sheath-plasma wave (SPW). The SPW propagates along the sheath surface in a particular direction dictated by the orientation of the magnetic field with respect to the surface, and the wave energy in the SPW accumulates near places where the background magnetic field is tangent to the surface.