Initial Boronization of JT-60U Tokamak Using Decaborane
- 1 July 1993
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 32 (7R)
- https://doi.org/10.1143/jjap.32.3276
Abstract
A decaborane-based boronization system has been installed in the JT-60U tokamak in order to reduce the influx of impurities during plasma discharges. Boronization has been performed under a glow discharge using a helium-decaborane gas mixture. The properties of the boron films deposited through boronization and the effects of boronization on the tokamak discharges were investigated. It was found that the deposition of a boron layer with high purity was achieved with few impurities other than hydrogen through boronization, and that the present boronization deposited toroidally nonuniform boron film. It was also found that the decaborane-based boronization resulted in good plasma performance similar to that of conventional boronization.Keywords
This publication has 17 references indexed in Scilit:
- Plasma-assisted surface modification and radical diagnosticsJournal of Nuclear Materials, 1993
- Boronization in Tore SupraJournal of Nuclear Materials, 1992
- In situ boron nitride coating and comparison with existing boronizationsJournal of Nuclear Materials, 1992
- Control of impurity and hydrogen-deuterium dilution by wall conditioning in JT-60UJournal of Nuclear Materials, 1992
- A comparison of tokamak operation with metallic getters (Ti, Cr, Be) and boronizationJournal of Nuclear Materials, 1990
- Borontrimethyl B(CH3)3 — A less hazardous substance for boronizationJournal of Nuclear Materials, 1990
- Cold boronisation in TCAJournal of Nuclear Materials, 1990
- Effects of boronization of the first wall in TFTRJournal of Nuclear Materials, 1990
- Boronization in textorJournal of Nuclear Materials, 1989
- Development of plasma CVD and feasibility study of boron carbide in-situ coatings for tokamaksJournal of Nuclear Materials, 1989