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Analysis of the hollow cathode emitted electron beams in a radial multichannel pseudospark

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4 Author(s)
J. Kiefer ; Fraunhofer-Inst. fur Lasertechnik, Aachen, Germany ; W. J. Neff ; R. Lebert ; A. Naweed

A radial multichannel pseudospark switch seems advantageous for switching currents exceeding 100 kA. A single common hollow cathode guarantees the same trigger conditions for all channels. The electron beams emitted out of the hollow cathode of this switch are analyzed by means of Faraday-cups by varying the circuit as well as the trigger parameters. In addition to the cup measurements, the discharge is observed using a CCD camera. It is found that each channel of the switch must receive a respective beam, before the resistance of the switch turns low, if the discharge current is to run through that channel. In addition, most of the varied parameters do not influence the electron beam

Published in:

IEEE Transactions on Plasma Science  (Volume:23 ,  Issue: 3 )