High resolution camera for gamma-ray spectroscopy and imaging in nuclear physics research

Abstract

In nuclear physics basic research and, particularly, in gamma spectroscopy, the use of an imaging detector can be extremely useful to reduce the Doppler Broadening effect in experiments where the gamma-ray source moves with high/relativistic velocity. In this work, we propose to use a recently developed gamma camera, based on CsI:Tl scintillator coupled to an array of Silicon Drift Detectors, for such type of experiments. The camera, suitably modified to cope with high-energy detection, has shown, in preliminary measurements with a 1cm thick scintillator, a spatial resolution of 2mm with a collimated source of 137Cs (662keV).