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Electron heating during ICRH in the JET tokamak is studied. Electron heating profiles are obtained by measuring the increase in electron temperature after sawtooth crashes. By studying the increase in electron heating during power ramp-up it is possible to distinguish direct electron heating from indirect electron heating via minority ions. For direct heating, power deposition profiles are obtained and compared with code calculations. For indirect electron heating the time dependence is consistent with classical slowing down of high energy ions on electrons through Coulomb collisions.

Additional information

Authors: ERIKSSON L G, Chalmers University of Technology, S-41296 Gothenburg (SE);HELLSTEN T, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Bibliographic Reference: Report: JET-P(88)47 EN (1988)
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 198910920 / Last updated on: 1994-12-01
Original language: en
Available languages: en