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21 September 2007Mercuric iodide photocell technology for room temperature readout of scintillators
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 are reporting here preliminary results of using HgI2 crystals to fabricate photocells used in the readout
of various scintillators. The optical spectral response and efficiency of these photocells were measured and will be
reported. Preliminary nuclear response from an HgI2 photocell that was optically matched to a Ce3+:LaBr3 scintillator will also be presented and discussed. Further improvements will be sought by optimizing the transparent contact
technology.
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Warnick J. Kernan, Arnold Burger, Larry A. Franks, Michael Groza, "Mercuric iodide photocell technology for room temperature readout of scintillators," Proc. SPIE 6706, Hard X-Ray and Gamma-Ray Detector Physics IX, 67060G (21 September 2007); https://doi.org/10.1117/12.739778