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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >A self-consistent one-dimensional model of the anode region of inert gas discharges at low pressures and currents
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A self-consistent one-dimensional model of the anode region of inert gas discharges at low pressures and currents

机译：低压和高压下惰性气体放电阳极区域的自洽一维模型

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A self-consistent one-dimensional model of the anode region of inert gas discharges at low pressures and currents is developed on the basis of non-local electron kinetics in spatially inhomogeneous fields. The model is based on the kinetic equation for electrons, the momentum transfer equation for ions and Poisson's equation. These equations are solved in the extended, non-uniform, quasi-neutral plasma disturbed by the anode and in the thin collisional sheath of space charge. The input parameters are the discharge current, neutral gas pressure and the radius of the tube. The axial profiles of the field, potential, radially-averaged densities of charged and excited particles, rates of excitation and ionizations and the ion current densities are obtained from the anode to the positive column. Two different cases are modelled which correspond to the self-consistent formation of either monotonous or non-monotonous electric field profiles. These cases correspond to different mechanisms of ion production in the sheath and the quasi-neutral plasma in the anode region. Particular calculations are carried out for neon discharges. [References: 11]
机译：基于空间非均匀场中的非局部电子动力学，建立了低压和低电流下惰性气体放电阳极区域的自洽一维模型。该模型基于电子的动力学方程，离子的动量传递方程和泊松方程。这些方程在阳极扰动的扩展的，非均匀的准中性等离子体中以及在空间电荷的薄碰撞鞘中求解。输入参数是放电电流，中性气体压力和管的半径。从阳极到阳极，可以获得电场的轴向分布，电势，带电粒子和激发粒子的径向平均密度，激发和电离的速率以及离子电流密度。对两种不同的情况进行了建模，分别对应于单调或非单调电场分布的自洽形成。这些情况对应于护套中离子产生的不同机理和阳极区域中的准中性等离子体。对氖气放电进行了特殊的计算。 [参考：11]

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