Development of High-Resolution Scintillator Systems

Franks, Larry A. ; Kernan, Warnick J.

National Security Technologies, LLC

关键词: Iodides;    Thickness;    Trapping Areal Radiological Emergency Response;    Areal Radiological Emergency Response;    Efficiency;   

DOI  :  10.2172/917720
RP-ID  :  DOE/NV/25946--292
RP-ID  :  DE-AC52-06NA25946
RP-ID  :  917720

美国|英语

来源: UNT Digital Library

【 摘 要 】

Mercuric iodide (HgI2) is a well known material for the direct detection of gamma-rays; however, the largest volume achievable is limited by the thickness of the detector which needs to be a small fraction of the average trapping length for electrons. We report results of using HgI2 crystals to fabricate photocells used in the readout of scintillators. The optical spectral response and efficiency of these photocells were measured and will be reported. Nuclear response from an HgI2 photocell that was optically matched to a cerium-activated scintillator is presented and discussed. Further improvements can be expected by optimizing the transparent contact technology.