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Instruments and Experimental Techniques

, Volume 61, Issue 6, pp 849–855 | Cite as

An Automated System for Measuring the Current Density of a Pulse–Periodic Electron Beam with a Large Cross Section

  • M. S. Vorobyov
  • S. S. Kovalsky
  • N. N. Koval
GENERAL EXPERIMENTAL TECHNIQUES
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Abstract—In an electron source with a mesh plasma cathode on the basis of a low-pressure arc discharge, studies of the spatiotemporal stability of a pulse–periodic beam with a large cross section (750 × 150 mm2), which was extracted into the atmosphere through an output foil window, were performed. The automated system that was used in the studies allowed real-time measurements with the ability to visualize the data on a computer. This system provides an accuracy of measurements of no worse than ±2%; it differs from the known analogues in the compactness, reliability, and simplicity of its design and allows studies of the current-density distribution over the beam cross section in a wide range of beam parameters, such as the beam energy, beam current, and beam-current pulse duration. A satisfactory coincidence of the previously obtained data and the present experimental data is shown with the possibility of substantially increasing the accuracy of setting up a scientific experiment and, consequently, the speed of debugging and the reproducibility of the technological process.

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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • M. S. Vorobyov
    • 1
  • S. S. Kovalsky
    • 1
  • N. N. Koval
    • 1
  1. 1.Institute of High Current Electronics, Siberian Branch, Russian Academy of SciencesTomskRussia

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