Speaker
Description
Intense research activities have been made in the development of room temperature spectroscopic imagers working in the X-ray and gamma ray energy band. Cadmium-zinc-telluride (CZT) detectors equipped with custom electrode structures have shown interesting performance up to 1 MeV, competing with the superb energy resolutions of high-purity germanium (HPGe) detectors (0.3 % FWHM at 662 keV), obtained after cryogenic cooling. In this context, we will present the spectroscopic and spatial performance of new high-resolution CZT drift strip detectors for room temperature X-ray and gamma ray spectroscopic imaging. The detectors, equipped with cross-strip electrode patterns on the cathode/anode electrodes, allow excellent room temperature energy resolution (0.8 % FWHM at 662 keV) and sub-millimetre 3-D spatial resolution. These activities are in the framework of an Italian collaboration on the development of spectroscopic gamma ray imagers (10 keV-1 MeV) for medical and astrophysical applications.
