标题： 实验室等离子体鞘层波动与传播的电路分析 显示英文标题

标题： An electric circuital analysis of laboratory plasma sheath fluctuations and propagations

摘要： 在等离子体物理领域，人们对等离子体鞘层的有效感性（L）、容性（C）和阻性（R）行为以联合耦合形式的表现已十分熟悉。 本文系统地将实验室等离子体中的鞘层动态不稳定性建模为上述类型的电气串联谐振LCR电路。 从理论上讲，该模型能够解释共存的等离子体鞘层振荡、电流传导扰动以及随后产生的等离子体鞘层波（PSWs）等实验观测结果。 在LCR电路形式的等离子体电流允许在其均匀平衡状态下经历线性（小尺度）时空扰动。 振荡的鞘层通过鞘层诱导的能量转移过程激发等离子体主体中的离子声波。 所得结果主要可用于理解电磁通信天线、离子能量调制过程、各种等离子探针诊断等领域。 显示英文摘要

摘要： The effective inductive (L), capacitive (C), and resistive (R) behavior of a plasma sheath in a conjoint coupled form is well familiar among plasma physics communities. A dynamic sheath instability in laboratory plasmas is systematically modelled herein as an electrical series-resonance LCR circuit of the above kind. It theoretically yields experimentally observed findings on coexistent plasma sheath oscillation, electric current perturbation, and subsequent plasma sheath waves (PSWs). The plasma current in the LCR circuit formalism is allowed to undergo linear (small-scale) spatiotemporal perturbations about its homogeneous equilibrium state. The oscillating sheath triggers ion-acoustic wave excitation in the bulk plasma through sheath-induced energy transfer processes. The obtained results could be applicable mainly in understanding electromagnetic communication antennas, ion energy modulation processes, diverse plasma probe diagnostics, etc.