Ultra-fast LuI{sub 3}:Ce scintillators for hard x-ray imaging

Journal Article · Wed Jul 27 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4952907· OSTI ID:22608417

Marton, Zsolt; Miller, Stuart R.; Ovechkina, Elena; Singh, Bipin; Nagarkar, Vivek V. ^[1]; Kenesei, Peter; Moore, Matthew D.; Woods, Russell; Almer, Jonathan D.; Miceli, Antonino ^[2]

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1. Radiation Monitoring Devices, Inc., Watertown, MA 02472 (United States)
2. Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 (United States)

We have developed ultra-fast cerium-coped lutetium-iodide (LuI{sub 3}:Ce) films thermally evaporated as polycrystalline, structured scintillator using hot wall epitaxy (HWE) method. The films have shown a 13 ns decay compared to the 28 ns reported for crystals. The fast speed coupled with its high density (∼5.6 g/cm{sup 3}), high effective atomic number (59.7), and the fact that it can be vapor deposited in a columnar form makes LuI{sub 3}:Ce an attractive candidate for high frame rate, high-resolution, hard X-ray imaging. In crystal form, LuI{sub 3}:Ce has demonstrated bright (>100,000 photons/MeV) green (540 nm) emission, which is well matched to commercial CCD/CMOS sensors and is critical for maintaining high signal to noise ratio in light starved applications. Here, we report on the scintillation properties of films and those for corresponding crystalline material. The vapor grown films were integrated into a high-speed CMOS imager to demonstrate high-speed radiography capability. The films were also tested at Advanced Photon Source, Argonne National Laboratory beamline 1-ID under hard X-ray irradiation. The data show a factor of four higher efficiency than the reference LuAG:Ce scintillators, high image quality, and linearity of scintillation response over a wide energy range. The films were employed to perform hard X-ray microtomography, the results of which will also be discussed.

• OSTI ID: 22608417
• Journal Information: AIP Conference Proceedings, Vol. 1741, Issue 1; Conference: SRI2015: 12. international conference on synchrotron radiation instrumentation, New York, NY (United States), 6-10 Jul 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ADVANCED PHOTON SOURCE
ANL
ATOMIC NUMBER
CERIUM ADDITIONS
CHARGE-COUPLED DEVICES
EMISSION
EPITAXY
FILMS
HARD X RADIATION
IRRADIATION
LUTETIUM IODIDES
NOISE
PHOSPHORS
POLYCRYSTALS
RESOLUTION
SCINTILLATIONS
SENSORS
SIGNAL-TO-NOISE RATIO