The CSPD-2 gamma-ray imaging system
作者： Z. He , L.E. Smith , D.K. Wehe , G.F. Knoll
DOI: 10.1109/23.603776
关键词:
摘要: A compact portable /spl gamma/-ray vision system consisting of a lead multi-hole collimator, CsI(Tl)/photodiode detector array, CCD camera and personal computer, has been constructed tested. The optical picture obtained with is overlaid intensity distributions at different energies to enable immediate localization multiple radioactive sources. employs shielded array sixteen 1/spl times/1/spl times/3 cm CsI(Tl) scintillation crystals, each which viewed by 1 square Hamamatsu PIN silicon photodiode. device operates in the energy range from 100 keV 3 MeV an average resolution about 7% FWHM, angular 40 FWHM 662 keV. collected distribution processed using maximum-likelihood algorithm provide more precise reconstruction gamma/-emitter distribution. mounted on pan-and-tilt table; total weight imaging 30 kg. performance this instrument tested our laboratory results show that should be competitive candidate for radiation monitoring nuclear facilities.
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