New ISP sensor structure with electric circuit components.
I-V characteristic curves measured by (a) the conventional Katsumata probe and (b) the new ISP with mesh electrode.
Logarithmic plots of the I-V characteristic curve measured by (a) the collector and (b) the guard electrode of the new ISP.
I-V curves measured with the new ISP for a range of values of the irradiated ECR power P ECR from 2.2 kW to 5.7 kW.
Radial profiles of ion temperature T i , electron temperature T e , space potential V s , and ion density n i measured by the new ISP in the ECR plasma experiment. T e at r = 1.3 cm was measured by a Langmuir probe.
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