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Abstract

Electron cyclotron emission at frequencies for which the plasma is optically thick has been used for a long time as a diagnostic to determine the electron temperature in tokamaks. When the resonant layer is optically thin the emission contains information on the plasma density (provided the electron distribution is Maxwellian). However the measurement of the electron density is hampered by wall reflections and the presence of multiple resonant layers in large aspect ratio tokamaks. Theoretical and experimental investigations of the emission by "optically thin harmonics" which has led to improved modelling of E.C.E. for the J.E.T. tokamak and an attempt to measure the electron density to T.F.R. are described.

Additional information

Authors: LAURENT L, CEA, FONTENAY-AUX-ROSES (FRANCE);BARTLETT D CEA, FONTENAY-AUX-ROSES (FRANCE), CEA, FONTENAY-AUX-ROSES (FRANCE)
Bibliographic Reference: EC-4 + FOURTH INTERNATIONAL WORKSHOP ON ELECTRON CYCLOTRON EMISSION AND ELECTRON CYCLOTRON RESONANCE HEATING, ROMA (ITALY), MARCH 28-30, 1984 WRITE TO ENEA, SERVIZIO STUDI E DOCUMENTAZIONE CENTRO RICERCHE ENERGIA FRASCATI, C.P. 65, 00044 FRASCATI, ROMA (I
Record Number: 1989123096500 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en