Novel High Efficiency Microcolumnar LuI3:Ce for Hard X-ray Imaging

17th Pan-American Synchrotron Radiation Instrumentation Conference

Marton, Z.^1,3 ; Nagarkar, Vivek V.^1 ; Miller, Stuart R.^1 ; Brecher, Charles^1 ; Bhandari, Harish B.^1 ; Kenesei, Peter^2 ; Ross, Stephen K.^2 ; Almer, Jonathan D.^2 ; Singh, Bipin^1

Radiation Monitoring Devices, Inc., Watertown, MA 02472, United States^1

X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, United States^2

44 Hunt Street, Watertown, MA, United States^3

关键词: Absorption efficiency;    Advanced photon source;    Argonne National Laboratory;    Effective atomic number;    High signal-to-noise ratio;    Temporal and spatial;    Temporal resolution;    Vacuum deposition techniques;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/493/1/012017/pdf
DOI  :  10.1088/1742-6596/493/1/012017

来源: IOP

【 摘 要 】

We have developed a structured scintillator using a vacuum deposition technique that is suitable for manufacturing large area scintillators in a microcolumnar form. While providing high absorption efficiency, it also allows great temporal and spatial resolution X-ray imaging. Microcolumnar films of extremely fast and bright cerium-doped lutetium iodide (LuI3:Ce) scintillator were synthesized. It has high density (∼5.6 g/cm3), high effective atomic number (59.7), bright green emission (540 nm range, well matched to commercial optics and CCD sensors), light yield exceeding 115,000 ph/MeV, and rapid, afterglow-free decay (∼28 ns). This new scintillator could resolve the 153 ns bunch structure of the Advanced Photon Source (APS) at Argonne National Laboratory (ANL). Due to the fast, afterglow-free decay, and high efficiency of LuI3:Ce, during the experiments performed at the 1-ID hard X-ray beamline at the APS, single 65 keV X-ray photons could be resolved with high signal-to-noise ratio and with temporal resolution better than 20ns. In the future, it will enable a wide range of hard X-ray (20 keV to 100 keV) imaging and/or high frame-rate applications such as dynamic studies of the structural and electrochemical properties of batteries using microtomographic X-ray imaging, internal corrosion in fuel cells, and time-resolved muscle diffraction experiments.