@article{8ff629153dd04c20bc9204b1bd452fa4,
title = "Growth and Scintillation Properties of a New Red-Emitting Scintillator RbHfI for the Fiber-Reading Radiation Monitor",
abstract = "A new red-emitting halide scintillator Rb2HfI6 was developed using the vertical Bridgman furnace and quartz ampoule. Under X-ray irradiation, Rb2HfI6 had a broad emission band of around 725 nm. The light output and energy resolution were determined to be 40000 photons/MeV and 7.4% (full-width at half-maximum at 662 keV), respectively. Since red photons are transmitted with smaller losses than blue or yellow photons inside an optical fiber, a long-fiber-reading radiation detection system using the high light-output red scintillator can be established for severe or hazardous environments. We fabricated the Rb2HfI6 scintillation crystal and performed the gamma-ray detection test under high-dose irradiation condition from a 60Co source with an activity of 100 TBq. The dynamic range of the Rb2HfI6 gamma-ray detection with a 20-m optical fiber was evaluated and compared with the previously developed Cs2HfI6 crystal and the conventional deep-red Cr: α-Al2O3 (ruby) scintillator. The gamma-ray doses from 0.4 to 1 kSv/h were successfully measured using Rb2HfI6 through the 20-m fiber.",
keywords = "Fiber-reading gamma-ray detection, red emission, scintillators",
author = "Shohei Kodama and Shunsuke Kurosawa and Yuki Morishita and Hiroshi Usami and Tatsuo Torii and Masateru Hayashi and Makoto Sasano and Tetsushi Azuma and Hiroki Tanaka and Vladimir Kochurikhin and Jan Pejchal and Robert Kral and Masao Yoshino and Akihiro Yamaji and Satoshi Toyoda and Hiroki Sato and Yuji Ohashi and Yuui Yokota and Kei Kamada and Martin Nikl and Akira Yoshikawa",
note = "Funding Information: Manuscript received November 16, 2019; revised February 20, 2020; accepted February 21, 2020. Date of publication February 27, 2020; date of current version June 19, 2020. This work was supported in part by the Japan Society for the Promotion of Science (JSPS) KAKENHI under Grant 19H02422, Grant 19H04684, and Grant 18J21316, in part by the Leading Initiative for Excellent Young Researchers (LEADER) from the Ministry of Education, Culture, Sports, Science and Technology of Japan (MeXT) under Grant 16809648, in part by the Bilateral Academy of Science, Czech Republic-Japan Society for the Promotion of Science (AS CR-JSPS) Joint Research Project, in part by the Japan Agency for Medical Research and Development (AMED), Medical Research and Development Programs Focused on Technology Transfers: Development of Advanced Measurement and Analysis Systems (AMED-SENTAN), in part by the Japan Science and Technology Agency (JST), Competitive Funding Programs A-STEP (Adaptable and Seamless Technology Transfer Program through Target-driven Research and Development) under Grant JPMJTS1521, in part by the New Energy and Industrial Technology Development Organization (NEDO), in part by the Nuclear Energy Science and Technology and Human Resource Development Project through concentrating wisdom from MeXT, in part by The Murata Science Foundation, in part by the Yazaki Memorial Foundation for Science and Technology, in part by the Tokin Science and Technology Promotion Foundation, in part by the Intelligent Cosmos Research Institute, in part by the Terumo Life Science Foundation, Special Research Subsidy, in part by The Sumitomo Foundation, Grant for Basic Science Research Projects, in part by the Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, in part by the International Collaboration Center Institute for Materials Research (ICC-IMR), Tohoku University, in part by the Foundation for Promotion of Material Science and Technology of Japan, in part by the Grant Fund for Research and Education of Institute for Materials Research, Tohoku University, in part by the Research Foundation for the Electrotechnology of Chubu, in part by the Marubun Research Promotion Foundation, in part by the Support of the Czech Science Foundation under Project 18-17555Y, and in part by the Global Institute for Materials Research Tohoku under Project 19K0517. The work of Shunsuke Kurosawa was supported by Grant-in-Aid for Young Scientists(B). Funding Information: The authors would like to thank the following persons for their support: Tomomi Kudo, Yuji Saito, Takuya Kato, and Yoshihiro Nakamura of Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University and Maki Ohno and Ai Kaminaka of NICHe, Tohoku University, Hiroshi Uemura, Keiko Toguchi, Megumi Sasaki, and Kuniko Kawaguchi of Institute for Materials Research (IMR), Tohoku University. This study has been carried out in part under the visiting Researcher{\textquoteright}s Program of the Institute for Integrated Radiation and Nuclear Science (31P5-13), Kyoto University. Publisher Copyright: {\textcopyright} 1963-2012 IEEE.",
year = "2020",
month = jun,
doi = "10.1109/TNS.2020.2976695",
language = "English",
volume = "67",
pages = "1055--1062",
journal = "IEEE Transactions on Nuclear Science",
issn = "0018-9499",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "6",
}