Incident beam intensity dependence of the charge-up process of the guiding of 1 MeV proton microbeam through a Teflon microcapillary

  • Gyula U. L. NagyEmail author
  • István Rajta
  • Réka J. Bereczky
  • Károly Tőkési
Regular Article
Part of the following topical collections:
  1. Topical Issue: Elementary Processes with Atoms and Molecules in Isolated and Aggregated States. Guest editors: Friedrich Aumayr, Bratislav Marinkovic, Štefan Matejčik, John Tanis, Kurt H. Becker


The ion guiding phenomenon was studied in the case of a single, straight, micrometer sized insulator capillary using a micro focused 1 MeV proton beam. The axis of the incident ion beam was tilted to 1° relative to the axis of the capillary. The aspect ratio of the target and the small beam divergence ensured the geometrical non-transparency of the capillary for the incoming beam. The intensity of the beam transmitted through the capillary was measured as the function of time and as a function of the incident beam intensity. At each constant incident beam intensities the time required for the charge-up process of the stable transmission was determined. We found that the time required to establish a stable guided transmission decreases reciprocally with the increasing incident beam current.

Graphical abstract


Incident Beam Proton Beam Method Phys Rutherford Backscatter Spectroscopy Transmitted Beam 
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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Gyula U. L. Nagy
    • 1
    Email author
  • István Rajta
    • 1
  • Réka J. Bereczky
    • 1
  • Károly Tőkési
    • 1
  1. 1.Institute for Nuclear ResearchHungarian Academy of Sciences (Atomki)DebrecenHungary

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