Characterization of electron beams generated in a high-voltage pulse-line-driven pseudospark discharge

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Title: Characterization of electron beams generated in a high-voltage pulse-line-driven pseudospark discharge
Author: Ramaswamy, K.; Destler, William; Segalov, Z.; Rodgers, J.
Abstract: Emittance and energy measurements have been performed on a high-brightness electron beam (>1010Nm2 rad2 ) with diameter in the range 1-3 mm and energy in the range 150-170 keY. This electron beam is generated by the mating of a hollow-cathode discharge device operating in the pseudospark regime to the output of a high-power pulse line accelerator. The measured effective emittance lies in the range between 30 and 90 mm mrad and increases with axial distance. Electron energy measurements indicate that the high-energy electrons are generated during the first 20-30 ns of the discharge. Both the emittance and energy experiments were performed at two different ambient argon gas pressures (92 and 152 mtorr). Beam expansion as a function of axial position has also been studied and a lower bound on the beam brightness has been obtained.
Description: Copyright 1994 American Institute of Physics. All Rights Reserved. This article can also be found on the publishers website: http://jap.aip.org/
Record URI: http://hdl.handle.net/1850/9515
Date: 1994-05-01

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