PROBE MEASUREMENTS IN THE DITE BUNDLE DIVERTOR
Measurements have been made of the plasma parameters in the DITE bundle divertor using an array of heat flux probes which can be scanned horizontally and vertically through the diverted flux bundle. Horizontal profiles of the saturation ion current, the electron temperature and the deposited power have been obtained for both ohmic and neutral beam heated discharges. Complete contours of these parameters have been obtained for the beam heated discharges. Maximum current densities of 7 A cm**-2, temperatures of 20-30 eV and deposited power of 25 MW m**- 2- have been observed. In addition surface collector probes exposed for 163 discharges have been analyzed and the main impurity shown to be stainless steel. The impurities were found to have penetrated about 100 nm into the carbon collector and this is consistent with diffusion.
Bibliographic Reference: JOURNAL OF NUCLEAR MATERIALS, VOL. 129 (1984), PP. 383-389
Record Number: 1989124050100 / Last updated on: 1987-01-01
Available languages: en