X-ray Fluorescence Auto Projection Tomography (X-FAPT)

Dietzel K I1, Johansen G A2 and McCann H3

1 Research & Engineering, Idea sASA , Veritasveien 9, PO Box 315, N-132 3Høvik, Norway, knut.dietzel@ideas.no

2 Department of Physics, University of Bergen

All,égaten 55, N-5007 Bergen, Norway,

geir.johansen@fi.uib.no

3 Dept. of Electrical Engineering & Electronics, UMIST, PO Box 88, Manchester M60 1QD, UK, h.mccann@umist.ac.uk

ABSTRACT

This is a report on the feasibility of a tomography system for application to gas and liquid phase systems. The technique is based on X-ray stimulated fluorescence, using collimated sources and detectors. It differs from other tomography modes in that it is able to identify and resolve different chemical species and that it eliminates the need for an inversion calculation. The technique measures the distribution and concentration of chemical species, which can be useful in reaction plants and flow systems. The feasibility of the measurement principle is governed by the fluorescence yield.

Keywords Tomography, Fluorescence, X-ray, Visualisation