Prototype fabrication of optical-guiding Tl:CsI crystal scintillators and investigation of the crystallization process. (1st April 2023)

• Record Type: Journal Article
• Authors: Yajima, Ryuga; Kamada, Kei; Murakami, Rikito; Kutsuzawa, Naoko; Sasaki, Rei; Yoshino, Masao; Horiai, Takahiko; Kim, Kyoung Jin; Kochurikhin, Vladimir. V.; Yamaji, Akihiro; Kurosawa, Shunsuke; Yokota, Yuui; Sato, Hiroki; Toyoda, Satoshi; Ohashi, Yuji; Hanada, Takashi; Yoshikawa, Akira
• Is Part Of: Japanese journal of applied physics. Volume 62:Number SC(2023)
• Publication Date: 2023-04-01
• Subjects: optical-guiding -- inorganic scintillator -- halide crystal -- crystal growth -- radiation imaging -- radiation detection; Physics -- Periodicals; 621.05
• DOI: 10.35848/1347-4065/acb3d1
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: In this study, optical-guiding crystal scintillator (OCS) and bundled plates were fabricated. Considering the performance and melting point of halide scintillators and the softening point of glass, Tl:CsI was selected as the fiber core and borosilicate glass as the cladding. Thus, the fabricated OCS had a scintillator in the core and glass in the cladding. The scintillator was remelted and unidirectionally solidified to remove the voids in the OCS and form a single crystal. Consequently, the OCS served as a scintillator fiber with excellent optical-guiding performance and high sensitivity to γ - and X-rays. An OCS plate was also fabricated using bundles of OCSs with diameters of several tens of microns. The developed OCS plate is expected to be a high-resolution and high-sensitivity imaging plate because of its excellent optical-guiding performance.