MEASUREMENTS OF ION CYCLOTRON EMISSION FROM OHMIC AND ICRF DISCHARGES IN JET
Measurements of the Ion Cyclotron Emission (ICE) from JET tokamak plasmas have been made using ICRF antennae on the low field side. From ohmically heated D+ plasmas a spectrum rich in harmonic peaks was detected in the range (10-100) MHz. The harmonic spacing is proportional to the magnetic field strength and the intensity depends approximately exponentially on the plasma current. Within operational limits, variations in plasma density did not appear to play a role. ICRF heated plasmas, on the other hand, emit a complex spectrum with harmonics of the RF generator frequency (f-o) as well as new peaks at nf-0/2 (n = 1, 3, 5...). The absolute ICE intensity has for the ohmic case, been compared with the expected blackbody level of this ion cyclotron emission.
Bibliographic Reference: COURSE AND WORKSHOP ON APPLICATIONS OF RF WAVES TO TOKAMAK PLASMAS, VILLA MONASTERO, VARENNA (ITALY), SEPT. 5-14, 1985 PP. 710-715, VOL. II 908 P., 1985, VOL. I AND VOL. II WRITE TO MONOTYPIA FRANCHI, VIALE UMBRIA 28/C, 06012 CITTA DI CASTELLO, PERUGIA (I
Record Number: 1989124101200 / Last updated on: 1987-01-01
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