The recently modified EMC3-EIRENE code package has been widely applied as an edge-plasma analysis tool and resulted in successful validation against various measured trends seen in stellarator and tokamak plasma boundaries. It has been shown that the code package applied for Wendelstein 7-X (W7-X) discharges in the interpretive mode can assess the impact of impurity effects on the electron density, measured by a set of Langmuir probes. In particular the spatial quantification of impurities and effects from the effective charge state Z eff and effective mass m eff , which are non-trivial to record by diagnostics, were examined. The results showed that earlier assumptions of the effective charge-state distribution and effective mass for reported Langmuir probe measurements must be revised. Subsequently, reprocessing these measurements with code-interpreted spatial profiles of the effective charge state and effective mass led to an overall improve...

中文翻译：

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Wendelstein 7-X边缘等离子体中Langmuir探针解释的多物种离子声速的数值估计

最近修改的EMC3-EIRENE代码包已被广泛用作边缘等离子体分析工具，并成功验证了在恒星器和托卡马克等离子体边界中观察到的各种测量趋势。已经证明，以解释模式应用于Wendelstein 7-X（W7-X）放电的代码包可以评估由Langmuir探针组测量的杂质效应对电子密度的影响。特别地，检查了杂质的空间量化以及来自有效电荷状态Z eff和有效质量m eff的影响，这对于诊断学来说是非常重要的。结果表明，必须修改先前报告的Langmuir探针测量的有效电荷态分布和有效质量的先前假设。后来，