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Trimethyl boron has been used to boronise COMPASS. This tokamak had no previous surface conditioning by any thin film deposition. It gave excellent long-term impurity control but with significant change to the hydrogen recycling characteristics. Mass analysis of the emitted atomic fluxes has been proposed as a method to monitor the hydrogen isotope ratio. A calibrated neutral particle analyser (ACORD-12), capable of measuring simultaneously energy spectra and neutral particle fluxes of hydrogen and deuterium, has been used in an experimental system for isotope ratio control in the COMPASS tokamak.

Additional information

Authors: FIELDING S J ET AL., AEA Fusion, Culham Laboratory, Abingdon, Oxon. (GB);CHERNYSHEV F V ET AL., Academy of Sciences of the USSR, A.F. Ioffe Physico-Technical Institute, St. Petersburg (SU);ESSER H G, Institut für Plasmaphysik, Kernforschungsanlage Jülich GmbH, Jülich (DE);WINTER J, Institut für Plasmaphysik, Kernforschungsanlage Jülich GmbH, Jülich (DE);VALOVIC M, I.P.P Czechoslovakia Academy of Science, Prague (CS)
Bibliographic Reference: Article: 18th European Conference on Controlled Fusion and Plasma Physics, Vol. III (1991) pp. 73-76
Record Number: 199111423 / Last updated on: 1994-12-02
Original language: en
Available languages: en
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