Abstract

Sensitivity, dynamic range, and spatial resolution measurements are presented for active imaging systems from Oriel Instruments, designed and optimised for pulsed x-ray diagnostics operating in kilovolt and sub-kilovolt x-ray regimes. Both systems employ cooled, multi- pinned-phase (also known as inverted mode) English Electric Valve company (EEV) charge coupled device detectors for image capture. For photon energies in the range of 25 eV to 1 keV, a rare earth phosphor transducer is coupled to the CCD via a fibre optic faceplate with 6-(µm diameter channels. From 1 keV to 8 keV, direct detection of electron-hole pairs generated in the depletion region of the CCD is employed.

© 1994 IEEE