The use of macro and micro proton beams to study the variation in PIXE yield from metal targets insulated with PTFE, glass and nylon |
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| Authors: | A. E. Pillay J. J. Kritzinger K. Springhorn N. Stodart |
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| Affiliation: | (1) Department of Chemistry, University of the Witwatersrand, P. O. Wits, 2050, South Africa;(2) National Accelerator Centre, P. O. Box 72, 7131 Faure, South Africa |
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| Abstract: | Proton beams of diameters of 3 mm and 3 μm, were used to observe the differences in PIXE yield from pure metal targets encapsulated with PTFE, glass (macor) and nylon. The beam energy was kept constant at 700 keV. Beam currents varied from about 200 pA with the microbeam and between 1–10 nA with the macrobeam. Considerable enhancement was observed mainly with the use of PTFE, up to about a factor of 18 with the macrobeam and 306 with the microbeam. |
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