Composition optimization of scintillating rare-earth nanocrystals in oxide glass–ceramics for radiation spectroscopy

Barta, M. Brooke; Nadler, Jason H.; Kang, Zhitao; Wagner, B. K.; Rosson, Robert; Cai, Yuanqiang; Sandhage, Kenneth H.; Kahn, Bernd

doi:10.1364/ao.53.000d21

Cited by 14 publications

(4 citation statements)

References 28 publications

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“…Moreover, CeBr 3 s rapid response, negligible afterglow, above-average density and effective atomic number verdict that such crystals should be considered for use in CT detectors or planar arrays for projection imaging. Incorporation in glass matrix for the engineering of structured scintillators has been reported [35,36], as well as pixelated arrays of this material [37].…”

Section: Discussionmentioning

confidence: 99%

Luminescence Efficiency of Cerium Bromide Single Crystal under X-ray Radiation

et al. 2022

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A rare-earth trihalide scintillator, CeBr3, in 1 cm edge cubic monocrystal form, is examined with regard to its principal luminescence and scintillation properties, as a candidate for radiation imaging applications. This relatively new material exhibits attractive properties, including short decay time, negligible afterglow, high stopping power and emission spectrum compatible with several commercial optical sensors. In a setting typical for X-ray radiology (medical X-ray tube, spectra in the range 50–140 kVp, human chest equivalent filtering), the crystal’s light energy flux, absolute efficiency (AE) and X-ray luminescence efficiency (XLE) were determined. Light energy flux results are superior in comparison to other four materials broadly used in modern medical imaging (slope of the linear no-threshold fit was 29.5). The AE is superior from 90 kVp onwards and reaches a value of 29.5 EU at 140 kVp. The same is true for the XLE that, following a flat response, reaches 9 × 10−3 at 90 kVp. Moreover, the spectral matching factors and the respective effective efficiencies (EE) are calculated for a variety of optical sensors. The material exhibits full compatibility with all the flat-panel arrays and most of the photocathodes and Si PMs considered in this work, a factor that proves its suitability for use in state-of-the-art medical imaging applications, such as CT detectors and planar arrays for projection imaging.

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Section: Discussionmentioning

confidence: 99%

Luminescence Efficiency of Cerium Bromide Single Crystal under X-ray Radiation

et al. 2022

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“…Compared with oxide crystals, halide matrixes are advantageous for improving radiation transition probability due to their low phonon nature. To date, a wide range of halide crystals has been successfully incorporated in glass matrix, including but not limited to CaF 2 , [ 47 ] SrF 2 , [ 48 ] LaF 3 , [ 49 ] GdF 3 , [ 50 ] CeBr 3 , [ 51 ] GdBr 3 , [ 51 ] KLu 2 F 7 , [ 52 ] and BaLuF 5 . [ 53 ] As the examples, transparent structured scintillators precipitated with BaGdF 5: Tb 3+ and SrGdF 7: Tb 3+ were demonstrated by Guo and co‐workers.…”

Section: Particle‐derived Structured Scintillatorsmentioning

confidence: 99%

Structured Scintillators for Efficient Radiation Detection

Lin

Yang

et al. 2021

Advanced Science

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Scintillators, which can convert high‐energy ionizing radiation into visible light, have been serving as the core component in radiation detectors for more than a century of history. To address the increasing application demands along with the concern on nuclear security, various strategies have been proposed to develop a next‐generation scintillator with a high performance in past decades, among which the novel approach via structure control has received great interest recently due to its high feasibility and efficiency. Herein, the concept of “structure engineering” is proposed for the exploration of this type of scintillators. Via internal or external structure design with size ranging from micro size to macro size, this promising strategy cannot only improve scintillator performance, typically radiation stopping power and light yield, but also extend its functionality for specific applications such as radiation imaging and therapy, opening up a new range of material candidates. The research and development of various types of structured scintillators are reviewed. The current state‐of‐the‐art progresses on structure design, fabrication techniques, and the corresponding applications are discussed. Furthermore, an outlook focusing on the current challenges and future development is proposed.

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“…The advancements in optical system measurements is a common theme among the papers. Measurements include ultra-short laser pulses, atmospheric aerosols, and field of view losses in bathymetric lidar [2][3][4][5][6][7][8].…”

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confidence: 99%

“…Three papers centered on measurement address distinctive problems for various applications. Along the lines of measurements of isotope identification, developments of new scintillator material combined with spectroscopy are presented for use in the radiation scanners for increased throughput as compared with current techniques [3]. The other papers present simulations and models of imaging systems with partially coherent light and phase reconstruction techniques, or through multiple optical axis pattern integrated inference exposure systems [4].…”

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confidence: 99%