Ion beam dose measurement in nuclear microprobe using a compact beam chopper

L. Bartha, I. Uzonyi

Research output: Contribution to journalConference article

30 Citations (Scopus)

Abstract

The accurate measurement of ion beam dose is a key point of quantitative analytical methods like PIGE, PIXE or RBS. To solve this problem for our Oxford-type scanning nuclear microprobe (SNM), a small-sized compact beam chopper has been developed. Ion beam dose is derived from the observed RBS yield from the surface of a wing after calibrating the yield versus collected charge. The wing is rotated by a stepper motor and is optionally covered with foils made of Al, Ni or Au. The beam chopper is capable to measure ion beam doses for different ions at a wide range of energy and current with a precision in the order of 1%.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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