A novel LiCl–BaCl2:Eu2+ eutectic scintillator for thermal neutron detection

Wu, Yuntao; Lukosi, Eric; Zhuravleva, Mariya; Lindsey, Adam C.; Melcher, Charles L.

doi:10.1016/j.nima.2015.06.064

Cited by 8 publications

(7 citation statements)

References 19 publications

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“…Here, we replace the SiO 2 film with a SiO 2 porous material, which has been shown to be feasibly implemented in PhCs. , A possible way to integrate the PhC (TiO 2 + porous SiO 2 ) and the scintillator CsI:Na could be via eutectic crystals . Eutectic techniques have been proven feasible for the fabrication of PhCs and scintillators. − Figure b shows the overall photodetector signal enhancement as a function of the periodicity and filling factor of the PhCs. Figure c shows the spectral density of the photons and photoelectrons in the case, where maximum enhancement (of 121%, or a factor of 2.21) is achieved.…”

Section: Resultsmentioning

confidence: 99%

Enhancing Large-Area Scintillator Detection with Photonic Crystal Cavities

Bizarri

Birowosuto

et al. 2022

ACS Photonics

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Scintillators are materials that emit visible photons when bombarded by high-energy particles (X-ray, γ-ray, electrons, neutrinos, etc.) and are crucial for applications, including X-ray imaging and high-energy particle detection. Here, we show that one-dimensional (1D) photonic crystal (PhC) cavities, added externally to scintillator materials, can be used to tailor the intrinsic emission spectrum of scintillators via the Purcell effect. The emission spectral peaks can be shifted, narrowed, or split, improving the overlap between the scintillator emission spectrum and the quantum efficiency (QE) spectrum of the photodetector. As a result, the overall photodetector signal can be enhanced by over 200%. The use of external PhC cavities especially benefits thick and large-area scintillators, which are needed to stop particles with ultrahigh energy, as in large-area neutrino detectors. Our findings should pave the way to greater versatility and efficiency in the design of scintillators for applications, including X-ray imaging and positron emission tomography.

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Section: Resultsmentioning

confidence: 99%

Enhancing Large-Area Scintillator Detection with Photonic Crystal Cavities

Bizarri

Birowosuto

et al. 2022

ACS Photonics

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“…As the smaller bandgap of scintillation phase may provide higher efficiency due to smaller energy required to create an electron–hole pair, apart from the reports dealing with chloride eutectic compositions, such as LiCl–BaCl 2 :Eu 2+ , [ 283 ] LiCl/Li 2 SrCl 4 :Eu 2+ , and [ 69 ] LiCl–CeCl 3 , [ 284 ] those based on bromides, such as Ce:LaBr 3 /AEBr 2 (AE ═ Mg, Ca, Sr, Ba) [ 68 ] and LiBr/LaBr 3 :Ce, [ 285 ] or iodides as BaI 2 /LuI 3 :Ce [ 286 ] or Eu‐doped LiSrI 3 /LiI, [ 287 ] were published as well. The highest LY was reported in, [ 285 ] 74 000 ph per neutron, which is much superior to presently available commercial single‐crystal scintillators for thermal neutron detection.…”

Section: Microstructured Halide Scintillatorsmentioning

confidence: 99%

Advanced Halide Scintillators: From the Bulk to Nano

Vaněček

Děcká

Mihóková

et al. 2022

Advanced Photonics Research

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Halide scintillators have been playing a crucial role in the detection of ionizing radiation since the discovery of scintillation in NaI:Tl in 1948. The discovery of NaI:Tl motivated the research and development (R&D) of halide scintillators, resulting in the development of CsI:Tl, CsI:Na, CaF2:Eu, etc. Later, the R&D shifted toward oxide materials due to their high mechanical and chemical stability, good scintillation properties, and relative ease of bulk single‐crystal growth. However, the development in crystal growth technology allows for the growth of high‐quality single crystals of hygroscopic and mechanically fragile materials including SrI2 and LaBr3. Scintillators based on these materials exhibit excellent performance and push the limits of inorganic scintillators. These results motivate intense research of a large variety of halide‐based scintillators. Moreover, materials based on lead halide perovskites find applications in the fields of photovoltaics, solid‐state lighting, and lasers. The first studies show also the significant potential of lead halide perovskites as ultrafast scintillators in the form of nanocrystals. The purpose of this review is to summarize the R&D in the field of halide scintillators during the last decade and highlight perspectives for future development.

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“…but also induce irregularity of lamellar structure and reduce transparency. In addition to CaF 2 /LiF, other array-derived structured scintillators with lamellar feature have been investigated, including SrF 2 /LiF, [81] LiSrI 3 /LiI, [82] BaCl 2 /LiCl, [83] Lu 3 Al 5 O 12 (LuAG)/Al 2 O 3 , [84] and CaF 2 /LiBaF 3 /LiF. [85] For instance, Yanagida et al fabricated SrF 2 /LiF structured scintillators via the micro pulling down (μ-PD) method.…”

Section: Self-growth Array-derived Structured Scintillatorsmentioning

confidence: 99%

“…[ 80 ] Characterization presented that excess amounts of Eu 2+ could not only cause undesired luminescence concentration quenching but also induce irregularity of lamellar structure and reduce transparency. In addition to CaF 2 /LiF, other array‐derived structured scintillators with lamellar feature have been investigated, including SrF 2 /LiF, [ 81 ] LiSrI 3 /LiI, [ 82 ] BaCl 2 /LiCl, [ 83 ] Lu 3 Al 5 O 12 (LuAG)/Al 2 O 3 , [ 84 ] and CaF 2 /LiBaF 3 /LiF. [ 85 ] For instance, Yanagida et al.…”

Section: Array‐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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A novel LiCl–BaCl2:Eu2+ eutectic scintillator for thermal neutron detection

Cited by 8 publications

References 19 publications

Enhancing Large-Area Scintillator Detection with Photonic Crystal Cavities

Enhancing Large-Area Scintillator Detection with Photonic Crystal Cavities

Advanced Halide Scintillators: From the Bulk to Nano

Structured Scintillators for Efficient Radiation Detection

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