TY - JOUR
T1 - Radiation resistance of praseodymium-doped aluminum lithium fluorophosphate scintillator glasses for laser fusion experiments
AU - Shinohara, Keito
AU - Empizo, Melvin John F.
AU - Cadatal-Raduban, Marilou
AU - Yamanoi, Kohei
AU - Shimizu, Toshihiko
AU - Yoshimura, Masashi
AU - Sarukura, Nobuhiko
AU - Murata, Takahiro
AU - Uy, Mayrene A.
AU - Abe, Hitoshi
AU - Yoshikawa, Akira
AU - Boulon, Georges
AU - Dujardin, Christophe
N1 - Funding Information:
This work was supported in part by the Japan Society for the Promotion of Science (JSPS) through Grant Nos. JP22J11028, JP21K14562, and JP20K05091, by Tohoku University through the Global Institute for Materials Research Tohoku (GIMRT) Proposal No. 202112-RDKGE-0045, by the Osaka University Institute of Laser Engineering through the Collaborative Research Project No. 2022B1-004, and by Osaka University through the Research Abroad Program. The FTIR measurements were performed at the Analytical Instrument Facility of the Osaka University Graduate School of Science, while the X-ray absorption spectroscopy measurements were carried out under KEK Proposal Nos. 2021PF-T001 and 2022G030. The authors are likewise grateful to Ms. Youwei Lai, Mr. Haoze Yu, Mr. Shohei Tsurunaga, and Mr. Angelo P. Rillera for their assistance in the experiments.
Publisher Copyright:
© 2022 The Japan Society of Applied Physics.
PY - 2023/1/1
Y1 - 2023/1/1
N2 - We report the gamma (γ)-ray radiation resistance of praseodymium (Pr3+)-doped aluminum lithium fluorophosphate scintillator glasses. For its assessment as a scintillator material for laser fusion experiments, a 20Al(PO3)3-80LiF-PrF3 (Pr3+-doped APLF) glass was irradiated with γ-rays from a cobalt-60 (60Co) source resulting in an absorbed dose of 5.2 kGy. Although γ-ray-irradiation results in increased absorption due to phosphorus-oxygen hole centers (POHCs) and PO32− electron centers (PO3 ECs), these radiation-induced defects do not modify the glass emission as both non-irradiated and γ-ray-irradiated glasses exhibit similar emission spectra and decay times under optical and X-ray excitation. The emission peaks observed also correspond to the different interconfigurational 4f5d → 4f2 and intraconfigurational 4f2 transitions of Pr3+ ions which are neither oxidized nor reduced by irradiation. Our results show that Pr3+-doped APLF glass still maintains its characteristic fast decay time and that γ-ray irradiation does not affect the glass scintillation mechanisms.
AB - We report the gamma (γ)-ray radiation resistance of praseodymium (Pr3+)-doped aluminum lithium fluorophosphate scintillator glasses. For its assessment as a scintillator material for laser fusion experiments, a 20Al(PO3)3-80LiF-PrF3 (Pr3+-doped APLF) glass was irradiated with γ-rays from a cobalt-60 (60Co) source resulting in an absorbed dose of 5.2 kGy. Although γ-ray-irradiation results in increased absorption due to phosphorus-oxygen hole centers (POHCs) and PO32− electron centers (PO3 ECs), these radiation-induced defects do not modify the glass emission as both non-irradiated and γ-ray-irradiated glasses exhibit similar emission spectra and decay times under optical and X-ray excitation. The emission peaks observed also correspond to the different interconfigurational 4f5d → 4f2 and intraconfigurational 4f2 transitions of Pr3+ ions which are neither oxidized nor reduced by irradiation. Our results show that Pr3+-doped APLF glass still maintains its characteristic fast decay time and that γ-ray irradiation does not affect the glass scintillation mechanisms.
KW - fluorophosphate
KW - glass
KW - praseodymium
KW - scintillator
KW - γ-ray
UR - http://www.scopus.com/inward/record.url?scp=85144284764&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85144284764&partnerID=8YFLogxK
U2 - 10.35848/1347-4065/aca0d4
DO - 10.35848/1347-4065/aca0d4
M3 - Article
AN - SCOPUS:85144284764
SN - 0021-4922
VL - 62
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
IS - 1
M1 - 010613
ER -