Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986itns...33..735g&link_type=abstract
(IEEE, DOE, NASA, et al., 1985 Nuclear Science Symposium, 32nd, and 1985 Symposium on Nuclear Power Systems, 17th, San Francisco
Astronomy and Astrophysics
Astronomy
17
Balloon-Borne Instruments, Radiation Detectors, X Ray Astronomy, X Ray Telescopes, Pulse Amplitude, Sensitivity, Sodium Iodides, Spatial Resolution, Telemetry
Scientific paper
The development and testing of a detector to be used in the Energetic X-ray Imaging Telescope Experiment (EXITE) are reported. It consists of a 34 cm diameter NaI(Tl) 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 percent (FWHM), respectively. This energy resolution is about 50 percent 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.
Burg Richard
Flanagan Joan
Garcia Murillo R.
Grindlay Jonathon E.
Murray Stephen S.
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