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Abstract

In the plasma generator PSI-1 (a stationary magnetically stabilised high current arc) a steady state plasma is generated between a cathode and a hollow anode. The cathode-anode space is extended by a drift chamber into which the quasi-neutral plasma expands along the magnetic field lines and is limited by a target plate. Experiments have been carried out in argon and hydrogen with discharge currents of up to 1000 A. A helium beam diagnostic was tested and evaluated at PSI for electron temperatures of 5 - 50 eV. Optimising the beam source and choosing a low helium flux rate allowed a high spatial resolution to be obtained. The stationary PSI plasma offered good conditions for testing and comparing different beam sources to form a nearly monoenergetic beam with low divergence.

Additional information

Authors: BEHRENDT H ET AL., Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);PASCH E, Forschungszentrum Jülich GmbH (KFA) (DE)
Bibliographic Reference: Article: 21st EPS Conference on Controlled Fusion and Plasma Physics, Montpellier, 27 June - 1 July, 1994, Vol. 18B (1994) Part III, pp. 1328-1331
Record Number: 199510183 / Last updated on: 1995-02-07
Category: PUBLICATION
Original language: en
Available languages: en