Strontium and barium iodide high light yield scintillators

Journal Article · Mon Dec 31 23:00:00 EST 2007 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2885728· OSTI ID:963394

Cherepy, Nerine ^[1]; Hull, Giulia ^[1]; Drobshoff, Alexander ^[1]; Payne, Stephen A. ^[1]; Van Loef, Edgar ^[2]; Wilson, Cody ^[2]; Shah, Kanai ^[2]; Roy, Utpal ^[3]; Burger, Arnold ^[4]; Boatner, Lynn A ^[5]; Choong, Woon-Seng ^[6]; Moses, W. W. ^[6]

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1. Lawrence Livermore National Laboratory (LLNL)
2. Radiation Monitoring Devices, Watertown, MA
3. ICx Radiation, Oak Ridge
4. Fisk University, Nashville, TN
5. ORNL
6. Lawrence Berkeley National Laboratory (LBNL)

Europium-doped strontium and barium iodide are found to be readily growable by the Bridgman method and to produce high scintillation light yields. SrI2Eu emits into the Eu2+ band, centered at 435 nm, with a decay time of 1.2 s and a light yield of 90 000 photons/MeV. It offers energy resolution better than 4% full width at half maximum at 662 keV, and exhibits excellent light yield proportionality. BaI2Eu produces 30 000 photons/MeV into the Eu2+ band at 420 nm 1 s decay. An additional broad impurity-mediated recombination band is present at 550 nm 3 s decay, unless high-purity feedstock is used.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: ORNL work for others
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 963394
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 8 Vol. 92
• Country of Publication: United States
• Language: English