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

Abstract

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-raymore » microtomography, the results of which will also be discussed.« less

Authors:
; ; ; ;  [1]; ; ; ; ;  [2]
  1. Radiation Monitoring Devices, Inc., Watertown, MA 02472 (United States)
  2. Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 (United States)
Publication Date:
OSTI Identifier:
22608417
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1741; Journal 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)
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Marton, Zsolt, E-mail: zmarton@rmdinc.com, Miller, Stuart R., Ovechkina, Elena, Singh, Bipin, Nagarkar, Vivek V., Kenesei, Peter, Moore, Matthew D., Woods, Russell, Almer, Jonathan D., and Miceli, Antonino. Ultra-fast LuI{sub 3}:Ce scintillators for hard x-ray imaging. United States: N. p., 2016. Web. doi:10.1063/1.4952907.
Marton, Zsolt, E-mail: zmarton@rmdinc.com, Miller, Stuart R., Ovechkina, Elena, Singh, Bipin, Nagarkar, Vivek V., Kenesei, Peter, Moore, Matthew D., Woods, Russell, Almer, Jonathan D., & Miceli, Antonino. Ultra-fast LuI{sub 3}:Ce scintillators for hard x-ray imaging. United States. doi:10.1063/1.4952907.
Marton, Zsolt, E-mail: zmarton@rmdinc.com, Miller, Stuart R., Ovechkina, Elena, Singh, Bipin, Nagarkar, Vivek V., Kenesei, Peter, Moore, Matthew D., Woods, Russell, Almer, Jonathan D., and Miceli, Antonino. Wed . "Ultra-fast LuI{sub 3}:Ce scintillators for hard x-ray imaging". United States. doi:10.1063/1.4952907.
@article{osti_22608417,
title = {Ultra-fast LuI{sub 3}:Ce scintillators for hard x-ray imaging},
author = {Marton, Zsolt, E-mail: zmarton@rmdinc.com and Miller, Stuart R. and Ovechkina, Elena and Singh, Bipin and Nagarkar, Vivek V. and Kenesei, Peter and Moore, Matthew D. and Woods, Russell and Almer, Jonathan D. and Miceli, Antonino},
abstractNote = {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.},
doi = {10.1063/1.4952907},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1741,
place = {United States},
year = {Wed Jul 27 00:00:00 EDT 2016},
month = {Wed Jul 27 00:00:00 EDT 2016}
}