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Abstract

A new method for measuring the electron density spatial profile has been successfully tested on the TFR tokamak. This method is based on the total reflection experienced by a wave of frequency F on the layer where F = F-pe(r). The experimental results show that the maximum electron density in the discharge is also easily measured and that accurate determination of a density profile can be obtained with a time resolution of 5 ms. This diagnostic is well adapted to all fusion devices where access to the total plasma cross section is limited and particularly for large tokamaks.

Additional information

Authors: SIMONET F CEA, FONTENAY-AUX-ROSES (FRANCE), CEA, FONTENAY-AUX-ROSES (FRANCE)
Bibliographic Reference: WRITE TO CEA MENTIONING REPORT EUR-CEA-FC-1225 EN, 1984
Availability: Can be ordered online
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