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Scintillation characterization of thallium-doped lithium iodide crystals

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Title: Scintillation characterization of thallium-doped lithium iodide crystals

Subject: Decay time, ; Energy resolution, ; Lithium iodidie, ; Luminescence, ; Scintillation properties, ; X-ray excitation

Journal: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, v.793, pp.31 - 34

Abstract: Abstract The paper discusses scintillation and luminescence properties of thallium-doped LiI crystals, grown by the Bridgman technique. X-ray induced emission spectrum is obtained between 380 nm and 600 nm, and is attributed to the Tl+ ion. The photoluminescence measurement with the excitation wavelength of 305 nm revealed a similar emission spectrum. Light yield, energy resolution and scintillation decay time profiles were studied under 662 keV (137Cs) γ-ray excitation. A maximum light yield of 14,000±1400 ph/MeV and two exponential decay time components were obtained. © 2015 Elsevier B.V