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Mean PIXE/PIGE spectrum obtained on biological sample. The counts and respective energies can be sorted according to beam position in order to produce element maps showing gamma or x-ray intensity vs beam position (see Fig. 3). Analytical conditions: 3.4 MeV proton beam; , beam diameter: .
Excitation function for the 110 keV (green, squares) and the 197 keV (blue, dots) gamma rays following the reaction and reference cross sections (dotted line). Data were normalized at 3.2 MeV according to Caciolli (Ref. 9).
Top: Carbon (green, left), iron (blue, center), and fluorine (red, right) elemental maps in a tissue section showing a blood vessel. Bottom: 3D rendering mapping of the section ( axis proportional to sample mass density). Time: 6 s/pixel; Scale .
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