Fabrication of Dy:GdVO4 single crystals and evaluation of scintillation performance

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2024-11-27 DOI:10.1016/j.materresbull.2024.113228

Kensei Ichiba , Akihiro Nishikawa , Takumi Kato , Daisuke Nakauchi , Kenichi Watanabe , Noriaki Kawaguchi , Takayuki Yanagida

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引用次数: 0

Abstract

Scintillators, which can rapidly transform high-energy photons of ionizing radiation into low-energy photons, are widely utilized for radiation detectors. In particular, scintillators with a slow decay time constant (several µs-order) commonly mounted on radiation detectors classified with current-type detectors. The commercial scintillators currently employed in current-type detectors, such as Tl:CsI and CdWO₄ (CWO), are containing substance restricted by the RoHS2 directives or exhibiting hygroscopic property, respectively. Therefore, there is a need for new scintillators that can overcome these limitations. In light of this, Dy:GdVO₄ single crystals were fabricated and evaluated their potential as scintillators in current-type detectors. Our results demonstrate that the light yield of the Dy:GdVO₄ shows 50,000 photons/MeV, with the afterglow level of 4.3 ppm. Such performances are equal or better than those of CWO and Tl:CsI, suggesting that Dy: GdVO₄ is a promising candidate for new scintillator in current-type detectors.

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.