New Developments of Self‐emitting Electrostatic Probes for use in High Temperature Plasmas

Emissive electrostatic probes for the use in fusion experiments must be able to sustain significantly higher thermal loads than in low-temperature plasma experiments. Several types of probe design are discussed, the results from the use of such probes in the edge plasma of the Wendelstein 7-AS stellarator are presented and compared with the predictions of emissive and non-emissive probe models. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)