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Abstract

In a future test reactor plasma device like ITER it is essential to be able to diagnose the alpha-particle temperature, motion and slow-down characteristics. This can be achieved by means of collective Thomsen scattering using powerful radiation sources in the submillimetre wave region. At present no alternative diagnostic methods have been proposed, let alone tested, to obtain these characteristics. The exceedingly small cross-section of Thomsen scattering requires a high power radiation source and a sensitive detection system and the fact that the information is contained in the spectrally broadened shape of the scattered radiation imposes limits on the line width of the source. A source of this type does not currently exist. Our current interest in the study of drift non-linearities in semiconductors giving rise to 1THz radiation is stimulated by these diagnostic applications.

Additional information

Authors: BRAZIS R, Semiconductor Physics Institute, Vilnius (LT);RAGOUTIS R, Semiconductor Physics Institute, Vilnius (LT);MOREAU P, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Federale de Lausanne (CH);SIEGRIST M R, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Federale de Lausanne (CH)
Bibliographic Reference: Article: 23rd International Conference on Infrared and Millimeter Waves, (1998)
Record Number: 199910864 / Last updated on: 1999-06-25
Category: PUBLICATION
Original language: en
Available languages: en
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