Electron strippers for compact neutron generators

K. Terai, N. Tanaka, M. Kisaki, K. Tsugawa, A. Okamoto, S. Kitajima, M. Sasao, T. Takeno, A. J. Antolak, K. N. Leung, M. Wada

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The next generation of compact tandem-type DD or DT neutron generators requires a robust electron stripper with high charge exchange efficiency. In this study, stripping foils of various types were tested, and the H- to H+ conversion efficiency, endurance to the heat load, and durability were investigated in terms of suitability in the tandem-type neutron generator. In the experiments, a H- beam was accelerated to about 180 keV, passes through a stripping foil, and produces a mixed beam of H -, H0, and H+. These ions were separated by an electric field, and detected by a movable Faraday cup to determine the conversion efficiency. The experimental results using thin foils of diamond-like carbon, gold, and carbon nano-tubes revealed issues on the robustness. As a new concept, a H- beam was injected onto a metal surface with an oblique angle, and reflected H+ ions are detected. It was found that the conversion efficiency, H+ fraction in the reflected particles, depends on the surface condition, with the maximum value of about 90%.

Original languageEnglish
Title of host publicationSecond International Symposium on Negative Ions, Beams and Sources, NIBS2010
Number of pages8
Publication statusPublished - 2011
Event2nd International Symposium on Negative Ions, Beams and Sources, NIBS2010 - Takayama City, Japan
Duration: 2010 Nov 162010 Nov 19

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Other2nd International Symposium on Negative Ions, Beams and Sources, NIBS2010
CityTakayama City


  • Electron stripper
  • Neutron generator
  • Stripping foils
  • Tandem accelerator

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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