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Title: Collimated electron beam accelerated at 12 kV from a Penning discharge

A pulsed electron beam accelerated at 12 kV with a duration of 40 μs per pulse is obtained from a Penning discharge with a hollow anode and two cathodes. The electrons are extracted through a hole in one of the cathodes and focused by a pair of coils. The electron beam has a diameter of a few mm in the cross section, while the beam current reaches peak values of 400 mA, depending on the magnetic field inside the focussing coils. This relatively inexpensive and compact device is suitable for the irradiation of small material samples placed in high vacuum.
Authors:
 [1] ;  [2] ; ;  [3]
  1. Department of Physics, University of Bucharest, 077125 Bucharest (Romania)
  2. (Romania)
  3. National Institute for Laser, Plasma and Radiation Physics, 077125 Bucharest (Romania)
Publication Date:
OSTI Identifier:
22392311
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BEAM CURRENTS; CATHODES; ELECTRON BEAMS; HOLLOW ANODES; MAGNETIC FIELDS; PENNING DISCHARGES