Title :
Development of the EXITE Detector: A New Imaging Detector for 20 - 300 keV Astronomy
Author :
Garcia, M.R. ; Grindlay, J.E. ; Burg, R. ; Murray, S.S. ; Flanagan, J.
Author_Institution :
Harvard/Smithsonian Center for Astrophysics 60 Garden St. Cambridge, MA. 02138
Abstract :
We report on the development and testing of a detector to be used in the Energetic X-ray Imaging Telescope Experiment (EXITE). It consists of a 34 cm diameter NaI(Tl) cyrstal 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 ~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(Tl) scintillator light flash.
Keywords :
Astronomy; Energy resolution; Image intensifiers; Optical imaging; Silicon; Telescopes; Testing; X-ray detection; X-ray detectors; X-ray imaging;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1986.4337204
