The nuclear microprobe at the University of Arizona

L. C. McIntyre, J. A. Leavitt, M. D. Ashbaugh, J. Borgardt, R. L. Keith, A. J. Gandolfi, Li Qiu, Jeri R. Lott, Q. Fernando

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Abstract

A nuclear microprobe has been operational at the University of Arizona since early 1994. It utilizes a magnetic quadrupole doublet (model QL-300 from Microscope Associates, Inc.) with an 11 mm diameter aperture and lens lengths of 6 cm each. The magnetic pole tips are electrically insulated to enable electric rotational alignment and beam rastering by application of varying voltages to the pole tips. Ion beams are obtained from a 5.5 MV model CN, High Voltage Engineering Corp. Van de Graaff accelerator with a Penning type ion source. Present mininum beam spot size is about 2 μm obtained with a 4 MeV H+2 beam with a current of about 40 pA. To date, the instrument has been successfully used to map concentrations of Hg, Cr, and As in rabbit renal slices using PIXE.

Original languageEnglish (US)
Pages (from-to)45-50
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume130
Issue number1-4
DOIs
StatePublished - Jul 1997

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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