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Articles de revues sur le sujet « Scintillation opaque »

Auteur : Grafiati

Publié le 11 janvier 2025

Mis à jour le 31 juillet 2025

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1

Hua, Z. H., S. Qian, H. Cai, et al. "R&D of glass scintillator for nuclear radiation detection." Journal of Instrumentation 18, no. 12 (2023): C12003. http://dx.doi.org/10.1088/1748-0221/18/12/c12003.

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Abstract In 2021, the Institute of High Energy Physics proposed a design of glass scintillator coupled with SiPM as a new solution for the next generation calorimeter, to explore the application of glass scintillators in high energy physics and nuclear radiation detection. The Large Area Glass Scintillator Collaboration Group was established to research and develop a glass scintillator with high density, high light yields and fast decay time. Through continuous optimization, the glasses have excellent scintillation performance with a light yield of 1000 ph/MeV and a density of 6 g/cm3. Moreove

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Yanagida, Takayuki, Daisuke Nakauchi, Takumi Kato, and Noriaki Kawaguchi. "(Invited) Photoluminescence and Scintillation Properties of Heavy Single Crystal Scintillators for X- and Gamma-Ray Detection." ECS Meeting Abstracts MA2024-02, no. 51 (2024): 3548. https://doi.org/10.1149/ma2024-02513548mtgabs.

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Scintillators are one of the luminescent materials, and have a function to convert a quantum of ionizing radiation to thousands of low energy photons immediately via interactions between the material and ionizing radiation [1,2]. Generally, scintillators are combined with photodetectors, and when the scintillation photons are emitted from the scintillator, photodetectors convert them to electrical signals. When the target ionizing radiation is high energy photons such as X- and gamma-rays, heavy materials are preferable for scintillators since the detection efficiency against high energy photo

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Takebuchi, Yuma, Keitaro Tezuka, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi та Takayuki Yanagida. "Αlpha-Ray Detection Properties of Spinel Single Crystals". ECS Meeting Abstracts MA2024-02, № 51 (2024): 3598. https://doi.org/10.1149/ma2024-02513598mtgabs.

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A scintillator is one of the phosphors for radiation detection. Typical application fields of scintillators are medical, security, and environmental dosimetry. In nuclear facilities, there are high doses of α-ray, and monitoring of α-ray is necessary. Up to now, Ag-doped ZnS is used for α-ray detection. Although Ag-doped ZnS has high light yield, the detection efficiency is limited because the material form is opaque polycrystal. Therefore, a novel scintillator with high transparency is required for α-ray detection. Spinel materials are one of the candidates for radiation detection because of

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LURYI, SERGE, and ARSEN SUBASHIEV. "LÉVY FLIGHT OF HOLES IN InP SEMICONDUCTOR SCINTILLATOR." International Journal of High Speed Electronics and Systems 21, no. 01 (2012): 1250001. http://dx.doi.org/10.1142/s0129156412500012.

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High radiative efficiency in moderately doped n- InP results in the transport of holes dominated by photon-assisted hopping, when radiative hole recombination at one spot produces a photon, whose interband absorption generates another hole, possibly far away. Due to "heavy tails" in the hop probability, this is a random walk with divergent diffusivity (process known as the Lévy flight). Our key evidence is derived from the ratio of transmitted and reflected luminescence spectra, measured in samples of different thicknesses. These experiments prove the non-exponential decay of the hole concentr

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Cartwright, L. E., J. Lambert, D. R. McKenzie, and N. Suchowerska. "The angular dependence and effective point of measurement of a cylindrical scintillation dosimeter with and without a radio-opaque marker for brachytherapy." Physics in Medicine and Biology 54, no. 7 (2009): 2217–27. http://dx.doi.org/10.1088/0031-9155/54/7/024.

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Otake, Shota, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, and Takayuki Yanagida. "Development of Europium-Doped Barium Fluorochloride Translucent Ceramic Scintillators." ECS Meeting Abstracts MA2024-02, no. 51 (2024): 3592. https://doi.org/10.1149/ma2024-02513592mtgabs.

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In solid-state ionizing radiation detectors, there are two main types of approaches: direct conversion and indirect conversion. The former generally uses semiconductor detectors (e.g., Si photodiodes) that convert radiation directly into electronic signals. The latter, on the other hand, uses phosphors and converts radiation into low-energy photons, which are then detected with a photodetector. Such phosphors are divided into scintillators and storage phosphors. Scintillators emit photons when electrons and holes generated by ionizing radiation recombine at emission centers. These are widely u

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Buck, C., B. Gramlich, and S. Schoppmann. "Novel opaque scintillator for neutrino detection." Journal of Instrumentation 14, no. 11 (2019): P11007. http://dx.doi.org/10.1088/1748-0221/14/11/p11007.

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Tafoya, L., V. Geppert-Kleinrath, E. Smith, et al. "Proton damage in (Y,Lu,Gd)₃(Al,Ga)₅O₁₂:Ce mixed garnet scintillators." Review of Scientific Instruments 93, no. 10 (2022): 103306. http://dx.doi.org/10.1063/5.0101866.

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Scintillators are vital components for nuclear instrumentation and its applications, including plasma diagnostics and imaging. As yields in controlled fusion experiments increase, the radiation tolerance of scintillator candidates for use in instrumentation is of particular importance. High radiation exposure can damage scintillating materials and alter the optical properties. The effects of radiation damage in Ce-doped mixed garnet ceramics over the compositional range (Y,Gd,Lu)3(Al,Ga)5O12 are investigated using optical techniques. The samples were exposed to 200 keV protons to an accumulate

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Yamamoto, Seiichi, Kei Kamada, Masao Yoshino, Akira Yoshikawa, Naoki Sunaguchi, and Jun Kataoka. "Development of a capillary plate based fiber-structured ZnS(Ag) scintillator." Journal of Instrumentation 17, no. 08 (2022): T08005. http://dx.doi.org/10.1088/1748-0221/17/08/t08005.

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Abstract Silver-doped zinc sulfide (ZnS(Ag)) is an opaque powder scintillator that is mainly used for detection or imaging of charged particles such as alpha particles. Since ZnS(Ag) is not transparent, the thickness of ZnS(Ag) was limited to ∼10 μm. If a thicker ZnS(Ag) scintillator could be developed, it would be useful for studies such as high-energy particle ion detection as well as beta particle or gamma photon detection. We developed a ZnS(Ag) fiber-structured scintillator using a capillary plate in which ZnS(Ag) powder was encapsulated in the capillaries. The thickness of the capillary

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Tsubota, Youichi, Kenji Kobayashi, Tatsuya Ishii, Misaki Hirato, Satoshi Shioya та Takahiro Nakagawa. "Development of α-ray visualization survey meter in high gamma and neutron background environment". Radiation Protection Dosimetry 200, № 16-18 (2024): 1676–80. http://dx.doi.org/10.1093/rpd/ncae169.

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Abstract A survey meter was developed to reliably detect and visualize surface contamination of suits and objects by α-nuclides in high γ/n-rays background radiation environment. The survey meter features a semi-opaque ZnS:Ag scintillator mounted directly onto a multi-anode photomultiplier tube (MA-PMT) and amplification circuits, ensuring output gain equalization for all channels. α-ray events induce localized light emission in thin-film scintillators. By directly mounting the scintillator, diffusion of light before reaching the MA-PMT is suppressed, concentrating it in just a few channels, t

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Braddock, Isabel H. B., Maya Al Sid Cheikh, Joydip Ghosh, et al. "Formamidinium Lead Halide Perovskite Nanocomposite Scintillators." Nanomaterials 12, no. 13 (2022): 2141. http://dx.doi.org/10.3390/nano12132141.

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While there is great demand for effective, affordable radiation detectors in various applications, many commonly used scintillators have major drawbacks. Conventional inorganic scintillators have a fixed emission wavelength and require expensive, high-temperature synthesis; plastic scintillators, while fast, inexpensive, and robust, have low atomic numbers, limiting their X-ray stopping power. Formamidinium lead halide perovskite nanocrystals show promise as scintillators due to their high X-ray attenuation coefficient and bright luminescence. Here, we used a room-temperature, solution-growth

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Abdiel Ramírez Reyes, Gerardo Herrera Corral, Elsa Ordoñez Casanova, Héctor Alejandro Trejo Mandujano, and Uzziel Caldiño Herrera. "Development and Validation of an X-ray Imaging Detector for Digital Radiography at Low Resolution." Journal of Nuclear Physics, Material Sciences, Radiation and Applications 7, no. 2 (2020): 181–87. http://dx.doi.org/10.15415/jnp.2020.72023.

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Digital X-ray detectors are required in different sciences and applications, however many high quality devices are expensive although high-resolution images are not always required. We present an easy way to build a detector capable of forming X-ray digital images and video with a very large area (18×18 cm2). The detector is formed by three main components: scintillator, optics lenses and CCD sensor. Basically, the device converts the X-rays into visible light which is then collected by the CCD sensor. The scintillator is Gadox type, from Carestream®, 18×18 cm2, regular type, lambda 547 nm. Th

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Tremsin, Anton S., Małgorzata G. Makowska, Didier Perrodin, et al. "In situdiagnostics of the crystal-growth process through neutron imaging: application to scintillators." Journal of Applied Crystallography 49, no. 3 (2016): 743–55. http://dx.doi.org/10.1107/s1600576716004350.

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Neutrons are known to be unique probes in situations where other types of radiation fail to penetrate samples and their surrounding structures. In this paper it is demonstrated how thermal and cold neutron radiography can provide time-resolved imaging of materials while they are being processed (e.g.while growing single crystals). The processing equipment, in this case furnaces, and the scintillator materials are opaque to conventional X-ray interrogation techniques. The distribution of the europium activator within a BaBrCl:Eu scintillator (0.1 and 0.5% nominal doping concentrations per mole)

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Georgadze, Anzori Sh. "Design and Simulation of a Muon Detector Using Wavelength-Shifting Fiber Readouts for Border Security." Instruments 9, no. 1 (2025): 1. https://doi.org/10.3390/instruments9010001.

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Cosmic ray muon tomography is a promising method for the non-invasive inspection of shipping containers and trucks. It leverages the highly penetrating cosmic muons and their interactions with various materials to generate three-dimensional images of large and dense objects, such as inter-modal shipping containers, which are typically opaque to conventional X-ray radiography techniques. One of the key tasks of customs and border security is verifying shipping container declarations to prevent illegal trafficking, and muon tomography offers a viable solution for this purpose. Common imaging met

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CABRERA, SERRA Anatael. "LiquidO: Detection and Imaging in Opaque Medium." May 4, 2023. https://doi.org/10.5281/zenodo.7922021.

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The neutrino discovery by Reines & Cowan (1956) paved the technical ground behind the establishment of much of today’s neutrino detection. Large instrumented volumes have been achieved via a key implicit principle: the impeccable transparency of detector. This remains true almost regardless of detection technique. Much of that technology has yielded historical success, including several discoveries, such as the “neutrino oscillation” phenomenon leading to an important modification of the Standard Model of Particle Physics. Despite their remarkable success, much of that te

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Tu, Degui, Dazhao Wang, Xunpiao Liu, et al. "Glass‐ZnS:Ag scintillating composite for radiation detection." Journal of the American Ceramic Society, April 20, 2024. http://dx.doi.org/10.1111/jace.19844.

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AbstractNeutrons are widely used in national defense, security, and medical health fields. It is critical to realize neutron detection with high efficiency. The most popular neutron detection scintillators such as lithium glass and 6LiF/ZnS:Ag screen exhibit insurmountable limitations: the former usually has relatively rather low light yield and latter is opaque. In this research, we report the successful construction of the novel full inorganic composite scintillators by low temperature co‐firing technology. The composite scintillator is derived from the ZnS:Ag and borate glass matrix, and it

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Böhlers, Manuel, Sebastian Böser, Magdalena Eisenhuth, et al. "Combining hybrid and opaque scintillator techniques in the search for double beta plus decays." European Physical Journal C 85, no. 2 (2025). https://doi.org/10.1140/epjc/s10052-025-13847-1.

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Abstract Double beta plus decay is a rare nuclear disintegration process. Difficulties in its measurement arise from suppressed decay probabilities, experimentally challenging decay signatures and low natural abundances of suitable candidate nuclei. In this article, we propose a new detector concept to overcome these challenges. It is based on the first-time combination of hybrid and opaque scintillation detector technology paired with novel light read-out techniques. This approach is particularly suitable for detecting positrons (beta plus) signatures. We expect to discover two-neutrino doubl

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Cabrera, A., A. Abusleme, J. dos Anjos, et al. "Neutrino physics with an opaque detector." Communications Physics 4, no. 1 (2021). http://dx.doi.org/10.1038/s42005-021-00763-5.

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AbstractIn 1956 Reines & Cowan discovered the neutrino using a liquid scintillator detector. The neutrinos interacted with the scintillator, producing light that propagated across transparent volumes to surrounding photo-sensors. This approach has remained one of the most widespread and successful neutrino detection technologies used since. This article introduces a concept that breaks with the conventional paradigm of transparency by confining and collecting light near its creation point with an opaque scintillator and a dense array of optical fibres. This technique, called LiquidO, can p

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Apilluelo, J., L. Asquith, E. F. Bannister, et al. "Characterization of a radiation detector based on opaque water-based liquid scintillator." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, November 2024, 170075. http://dx.doi.org/10.1016/j.nima.2024.170075.

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Böhles, Manuel, Sebastian Böser, Magdalena Eisenhuth, et al. "Publisher Erratum: Combining hybrid and opaque scintillator techniques in the search for double beta plus decays." European Physical Journal C 85, no. 7 (2025). https://doi.org/10.1140/epjc/s10052-025-14360-1.

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Polupan, Ya I., I. V. Lazarev, E. V. Martynenko, S. S. Minenko, O. A. Tarasenko, and V. A. Тarasov. "PECULIARITIES OF THE FORMATION OF SCINCILLATION RESPONSE IN ORGANIC MATERIALS WITH STOCHASTIC CHARACTER OF LIGHT PROPAGATION." Problems of Atomic Science and Technology, June 2023, 38–42. http://dx.doi.org/10.46813/2023-145-038.

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The paper examines the possibility of using an organic polycrystal as the “opaque” scintillator. Polycrystals are produced by pressing crystalline grains. When light propagates through a polycrystal, it is repeatedly reflected and refracted at the boundaries of the grains. This makes its propagation difficult. We studied the light output and optical transmittance of stilbene and p-terphenyl polycrystals with different fractions of crystalline grain: from 0.06…0.1 to 2.0…2.5 mm (the samples 20 mm in diameter and 2 mm in height) was conducted. Modelling of light propagation in polycrystalline sa

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