Ion heating in minority ICRH experiments on JETFunded under: FP2-FUSION 10C
Bulk ion heating by high power H-minority ICRH has been demonstrated in JET during pellet enhanced performance H-mode experiments (PEP + H-mode) and in density limit studies. In the PEP + H-mode plasmas the electron and ion temperatures both reached 10 keV at an electron density of 7 x 1.0 E19/m3. According to Fokker-Planck calculations, the power from the minority was transferred almost equally to the electrons and majority ions as a result of both the high electron density and the high minority density. For the first time with ICRH on JET, a central ion temperature greater than the central electron temperature was achieved. In the density limit experiments which involved strong gas puffing into limiter discharges, there was strong evidence of a transfer from electron heating to ion heating as the electron density was ramped up to 8 x 1.0 E19/m3.
Bibliographic Reference: Report: JET-R(91)06 EN (1991) 4 pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 199111624 / Last updated on: 1994-12-02
Original language: en
Available languages: en