Instruments and Experimental Techniques

, Volume 60, Issue 4, pp 562–569 | Cite as

Features of focusing of a high-intensity pulsed ion beam formed by a diode with a passive anode

  • X. P. Zhu
  • L. Ding
  • Q. Zhang
  • A. I. Pushkarev
  • M. K. Lei
General Experimental Techniques

Abstract

The results of investigating the focusing of a high-power ion beam, which is formed by a diode with a semicylindrical geometry and a passive anode, are presented. Two types of focusing diodes were investigated: with external magnetic insulation (one-pulse mode) and self-magnetic insulation of electrons (twopulse mode). Measurements of the energy-density distribution of the ion beam and the ion-current density were performed. It was found that when the diode operates in the two-pulse mode, the region of the maximum ion-beam energy density in the focal plane is displaced relative to the region of the maximum ion-current density by 5–10 mm. It is shown that the effect of a displacement of the focal spot with the maximum energy density is determined by the presence of a large number of accelerated neutral atoms in the ion beam. These atoms are produced as a result of the ion charge-exchange process in the anode–cathode gap of the ion diode during its operation in the two-pulse mode.

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Copyright information

© Pleiades Publishing, Inc. 2017

Authors and Affiliations

  • X. P. Zhu
    • 1
  • L. Ding
    • 1
  • Q. Zhang
    • 1
  • A. I. Pushkarev
    • 1
    • 2
  • M. K. Lei
    • 1
  1. 1.Surface Engineering Laboratory, School of Materials Science and EngineeringDalian University of TechnologyDalianChina
  2. 2.Tomsk Polytechnic UniversityTomskRussia

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