Strontium and barium iodide high light yield scintillators

Journal Article · Mon Feb 25 00:00:00 EST 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2885728· OSTI ID:21120566

Cherepy, Nerine J; Hull, Giulia; Drobshoff, Alexander D; Payne, Stephen A ^[1]; Loef, Edgar van; Wilson, Cody M; Shah, Kanai S ^[2]; Roy, Utpal N; Burger, Arnold ^[3]; Boatner, Lynn A ^[4]; Choong, Woon-Seng; Moses, William W ^[5]

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1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
2. Radiation Monitoring Devices, Boston, Massachusetts 02134 (United States)
3. Center for Physics and Chemistry of Materials, Fisk University, Nashville, Tennessee 37208 (United States)
4. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
5. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

Europium-doped strontium and barium iodide are found to be readily growable by the Bridgman method and to produce high scintillation light yields. SrI{sub 2}(Eu) emits into the Eu{sup 2+} band, centered at 435 nm, with a decay time of 1.2 {mu}s and a light yield of {approx}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. BaI{sub 2}(Eu) produces >30 000 photons/MeV into the Eu{sup 2+} band at 420 nm (<1 {mu}s decay). An additional broad impurity-mediated recombination band is present at 550 nm (>3 {mu}s decay), unless high-purity feedstock is used.

• OSTI ID: 21120566
• Journal Information: Applied Physics Letters, Vol. 92, Issue 8; Other Information: DOI: 10.1063/1.2885728; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM IODIDES
BRIDGMAN METHOD
CRYSTAL GROWTH
DOPED MATERIALS
ENERGY RESOLUTION
EUROPIUM IONS
IMPURITIES
PHOSPHORS
PHOTONS
RECOMBINATION
SCINTILLATION COUNTERS
SCINTILLATIONS
STRONTIUM IODIDES
VISIBLE RADIATION