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Abstract

A pair of asymmetric electrostatic double probes has been used in the boundary layer and divertor chamber of DITE. The electrode configuration is such that while one double probe collects ions moving towards the divertor target, the other collects ions moving away from it. The probes are used to measure electron temperature, density and Mach number of the flowing plasma. Although the interpretation of Mach number is model dependent, it is concluded that the Mach number within 6-10 cm from the divertor target ranges from about one to two while in the scrape-off layer it varies from 0.3 to 0.45.

Additional information

Authors: HARBOUR P J, CULHAM LABORATORY, ABINGDON, OXON. (UK);PROUDFOOT G CULHAM LABORATORY, ABINGDON, OXON. (UK), CULHAM LABORATORY, ABINGDON, OXON. (UK)
Bibliographic Reference: JOURNAL OF NUCLEAR MATERIALS, VOL. 121 (1984), PP. 222-228
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