标题： 基于回旋流体模拟的朗缪尔探针测量温度影响分析 显示英文标题

标题： Analysis of the temperature influence on Langmuir probe measurements on the basis of gyrofluid simulations

摘要： 温度及其波动对离子饱和电流和浮电位的影响，这些是通过Langmuir探针在聚变等离子体湍流边缘区域测量的典型量，通过全局非线性gyrofluid模拟针对两个示例参数区域进行分析。数值模拟使得可以直接获取分隔器周围不同径向位置的密度、温度和等离子体电位。这允许在模拟内部将原始数据与计算得到的离子饱和电流和浮电位进行比较。对由波动引起的径向粒子通量及其统计特性的计算显示，如果使用从离子饱和电流推导出的浮电位和平均密度，则在模拟域的所有径向位置上与实际值存在显著差异。 显示英文摘要

摘要： The influence of the temperature and its fluctuations on the ion saturation current and the floating potential, which are typical quantities measured by Langmuir probes in the turbulent edge region of fusion plasmas, is analysed by global nonlinear gyrofluid simulations for two exemplary parameter regimes. The numerical simulation facilitates a direct access to densities, temperatures and the plasma potential at different radial positions around the separatrix. This allows a comparison between raw data and the calculated ion saturation current and floating potential within the simulation. Calculations of the fluctuation-induced radial particle flux and its statistical properties reveal significant differences to the actual values at all radial positions of the simulation domain, if the floating potential and the temperature averaged density inferred from the ion saturation current is used.