标题： 表面上粒子在等离子体暴露下的电荷涨落 显示英文标题

标题： Charge fluctuations for particles on a surface exposed to plasma

摘要： 我们为处于等离子体暴露表面的微观尘埃粒子上的电荷波动开发了一个随机模型。 我们在稳态下发现，波动服从正态分布，其标准差与$CT_{e})^{1/2}$成正比，其中$C$是粒子-表面电容，$T_{e}$是等离子体电子温度。 初始不带电的粒子集合达到稳态分布所需的时间与$CT_{e}$成正比。 显示英文摘要

摘要： We develop a stochastic model for the charge fluctuations on a microscopic dust particle resting on a surface exposed to plasma. We find in steady state that the fluctuations are normally distributed with a standard deviation that is proportional to $CT_{e})^{1/2}$, where $C$ is the particle-surface capacitance and $T_{e}$ is the plasma electron temperature. The time for an initially uncharged ensemble of particles to reach the steady state distribution is directly proportional to $CT_{e}$.