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In the TEXTOR tokamak the behaviour of runaway electrons is studied by the infrared synchrotron radiation emitted by electrons with energies of about 25-30 MeV. With this new technique some interesting results are obtained: (i) the generation of runaways through a secondary process is for low density discharges the dominant production mechanism; (ii) loss of runaways through strong stochasticity has been directly observed; (iii) after pellet injection a beam of 30 MeV runaway electrons survives and is confined in an island-like structure, associated with the q = 1 surface; (iv) disruption generated runaway electrons inside the plasma are observed.

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Authors: JASPERS R, FOM Instituut voor Plasmafysica, Rijnhuizen, Nieuwegein (NL);FINKEN K H, Forschungszentrum Jülich GmbH (KFA) (DE)
Bibliographic Reference: Article: Contributions to High-Temperature Plasma Physics (1994) pp. 403-414
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