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Development of the EXITE detector: A new imaging detector for 20 - 300 keV astronomy

Conference · · IEEE Trans. Nucl. Sci.; (United States)
OSTI ID:5892639
The authors report on the development and testing of a detector to be used in the Energic X-ray Imaging Telescope Experiment (EXITE). It consists of a 34 cm diameter NaI(T1) crystal coupled directly to a single large image intensifier tube with associated silicon PIN diode readout. The measured spatial and energy resolutions at 122 keV are 6mm (FWHM) and 9% (FWHM), respectively. This energy resolution is approx. =50% better than that of any previously flown hard x-ray experiment. These resolutions decrease with the square root of the energy of the incident x-ray, indicating that they are determined by the number of photons emitted in the NaI(T1) scintillator light flash.
Research Organization:
Harvard/Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138
OSTI ID:
5892639
Report Number(s):
CONF-851009-
Conference Information:
Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: NS-33:1
Country of Publication:
United States
Language:
English