Development of X-ray mini-probes for the Digiray RGX system

Abstract We have developed and tested a variety of X-ray mini-probes for the Reverse Geometry X-radiography ® , 1 (RGX) system each having their own advantages and disadvantages. These mini-probes consist of small scintillators (as small as 2 mm in diameter and 5 mm long) attached to optical light guides (as long as 14 m) coupled to photomultipliers. Images produced with these probes show that even smaller probes and/or longer light guides may be fashioned. Such probes may be useful in both non-destructive evaluation and medical imaging.