Growth and scintillation properties of 3 in. diameter Ce doped Gd3Ga3Al2O12 scintillation single crystal

Kamada, Kei; Shoji, Yasuhiro; Kochurikhin, Vladimir V.; Okumura, Satoshi; Yamamoto, Seiichi; Nagura, Aya; Yeom, Jung Yeol; Kurosawa, Shunsuke; Yokota, Yuui; Ohashi, Yuji; Nikl, M.; Yoshikawa, Akira

doi:10.1016/j.jcrysgro.2016.04.037

Cited by 41 publications

(24 citation statements)

References 19 publications

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“…The presence of gallium oxide complicates somewhat the growth process as low level of oxygen must be used to prevent its decomposition. However, the growth of single crystals of the Ce-doped garnet Gd 3 Al 2 Ga 3 O 12 , 3 inch diameter has been reported [58] [see Fig. 5(a)] as well as that of 2 inch diameter single crystals of codoped versions of the same composition [59]- [61].…”

Section: A Single Crystalsmentioning

confidence: 99%

Needs, Trends, and Advances in Inorganic Scintillators

Dujardin

Auffray

Bourret-Courchesne

et al. 2018

IEEE Trans. Nucl. Sci.

387

240

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This paper presents new developments in inorganic scintillators widely used for radiation detection. It addresses major emerging research topics outlining current needs for applications and material sciences issues with the overall aim to provide an up-to-date picture of the field. While the traditional forms of scintillators have been crystals and ceramics, new research on films, nanoparticles, and microstructured materials is discussed as these material forms can bring new functionality and therefore find applications in radiation detection. The last part of the contribution reports on the very recent evolutions of the most advanced theories, methods, and analyses to describe the scintillation mechanisms.

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Section: A Single Crystalsmentioning

confidence: 99%

Needs, Trends, and Advances in Inorganic Scintillators

Dujardin

Auffray

Bourret-Courchesne

et al. 2018

IEEE Trans. Nucl. Sci.

387

240

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“…Therefore, in addition to the synthesis strategy and characterization of materials, it is also necessary to have a deeper understanding of the scintillation mechanism, which is also the goal that people always pursued in recent years. [ 83,84 ] For oxide scintillator, common materials such as aluminate, [ 85–90 ] silicate, [ 91–94 ] and molybdate [ 95 ] matrix are excellent scintillator materials.…”

Section: Scintillator Materialsmentioning

confidence: 99%

Halide Perovskite, a Potential Scintillator for X‐Ray Detection

et al. 2020

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the coincidence efficiency. This indicates that the solid angle controlled by the PET system and the efficiency of the intrinsic detector are greater. [11,12] More significantly, the Compton events in the pulse height spectrum are mainly caused by scattering in the scintillator. Therefore, these deficiencies can be avoided by lowering the threshold. However, the signal provided by Compton scattering quanta in adjacent crystals may be higher than the threshold, and thus may affect the position resolution and make it worse. In X-ray computed tomography (CT), the body is mainly irradiated continuously from multiple directions by fan-shaped X-rays, while attenuation profiles are recorded, and finally reconstructed from the cross-sectional view of the body. [13] This technology mainly uses complex scanning methods in the field of clinical practice. At present, the realized way of X-rays detector can be roughly divided into two types, direct and indirect. The former one directly absorbs incident X-rays, generates electronic signals through semiconductors or engenders chemical signals through thin films. [14-17] This method can directly convert X-rays into visible light without going through other processes. Therefore, an X-ray detector with a wide linear response range, fast pulse rise time, high-energy resolution, and spatial resolution can be obtained, which makes it copiously applied in X-ray detection. [18-21] However, X-ray detectors based on semiconductors face the challenges of high cost and low efficiency. In addition, although the film is cheap, it is difficult to apply in digital form, which may limit its further development. The latter one refers to the conversion of X-rays (in the highenergy radiation, in addition to X-rays, α, β, and γ rays are also included) into ultraviolet visible (UV) light through scintillators which can be further captured by optical devices. [22-24] It consists of a scintillator and an array photodiode (PD). In contrast, since the scintillator that converts X-rays indirectly is cheap, it is easier to implement in the industry than direct detectors, and has the characteristics of low cost and abundant options, stability, and flexible conversion rate. [25,26] At present, indirect X-ray detectors are widely used in ordinary flat panel X-ray detectors. Moreover, it can be flexibly combined with commercially mature sensor arrays (e.g., amorphous silicon PDs, thin film transistor arrays, photomultiplier tubes, complementary metal oxide semiconductors, silicon avalanche PDs, and X-ray imaging charge-coupled devices [CCD]), therefore, they have attracted more attention. Scintillator is a unique class of luminescent materials, which is extensively used in many fields such as nondestructive testing, medical imaging, space probes, etc. Compared with the disadvantages of traditional scintillator materials which have high cost, are fragile, have long response time and low spatial resolution disadvantages, metal halide perovskites are considered to be the most potential scintillator materials in ...

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“…On the other hand, inorganic single crystals have been manufactured by melt-growth approaches such as the Czochralski (Cz) [2,3], Vertical Bridgman (VB) [4,5], and micro-pulling-down (µ-PD) methods [6][7][8][9][10][11][12][13][14]. In particular, the µ-PD method is suitable for the material research of single crystals because it has a faster growth rate than other conventional melt-growth methods [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Platinum Fiber Fabricated by Unidirectional Solidification

Yokota

Nihei²,

Yoshino

et al. 2020

Crystals

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The microstructure and mechanical properties of platinum (Pt) fibers fabricated by unidirectional solidification using the alloy-micro-pulling-down (A-μ-PD) method were investigated using a Universal Testing Machine and Electron Backscattered Diffraction (EBSD). The Pt fiber fabricated at a growth rate of 10 mm/min was composed of relatively large grains with <100> crystal orientation along the growth direction. The crystal orientation was consistent with the easy axis of the crystal growth on the face-centered-cubic (f.c.c.) structure. On the other hand, the adjacent grains of the Pt fiber fabricated at 50 mm/min were randomly oriented owing to a faster growth rate. In tensile tests, the Pt fibers fabricated by the A-μ-PD method indicated extremely different stress–strain curves compared to the commercial Pt wire. The maximum tensile stress of the Pt fiber reached ~100 MPa, and the Pt fiber ruptured after 58% nominal strain.

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Growth and scintillation properties of 3 in. diameter Ce doped Gd3Ga3Al2O12 scintillation single crystal

Cited by 41 publications

References 19 publications

Needs, Trends, and Advances in Inorganic Scintillators

Needs, Trends, and Advances in Inorganic Scintillators

Halide Perovskite, a Potential Scintillator for X‐Ray Detection

Microstructure and Mechanical Properties of Platinum Fiber Fabricated by Unidirectional Solidification

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