Large size growth of terbium doped BaCl2/NaCl/KCl eutectic for radiation imaging. (8th February 2022)

• Record Type: Journal Article
• Authors: Takizawa, Yui; Kamada, Kei; Kim, Kyoung Jin; Yoshino, Masao; Yamaji, Akihiro; Kurosawa, Shunsuke; Yokota, Yuui; Sato, Hiroki; Toyoda, Satoshi; Ohashi, Yuji; Hanada, Takashi; Kochurikhin, Vladimir. V.; Yoshikawa, Akira
• Is Part Of: Japanese journal of applied physics. Volume 61:Number SC(2022)
• Publication Date: 2022-02-08
• Subjects: crystal growth -- scintillator -- imaging -- eutectic; Physics -- Periodicals; 621.05
• DOI: 10.35848/1347-4065/ac3b23
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: In this study, a large-size eutectic scintillator of Tb-doped BaCl2 /NaCl/KCl was grown using the Czochralski (Cz) and halide vertical Bridgman methods (H-VB). The suitability of these two growth methods for growing the eutectic was compared. Finally, 1 inch diameter eutectic bulks were obtained using the H-VB method. The Tb 3+ -derived strongest intensity peak at approximately 550 nm was observed by X-ray irradiation. An approximately 3 × 3 mm transparent eutectic wafer was cut and polished from the grown eutectic bulk. An imaging test using α -ray was performed using the grown eutectic, a fiber optic plate, and an electron-multiplying CCD camera. The resolution performance for radiation-imaging applications was evaluated.