| Autor: |
Shinohara, Keito, Empizo, Melvin John F., Cadatal-Raduban, Marilou, Yamanoi, Kohei, Shimizu, Toshihiko, Yoshimura, Masashi, Sarukura, Nobuhiko, Murata, Takahiro, Uy, Mayrene A., Abe, Hitoshi, Yoshikawa, Akira, Boulon, Georges, Dujardin, Christophe |
| Zdroj: |
Japanese Journal of Applied Physics; January 2023, Vol. 62 Issue: 1 p010613-010613, 1p |
| Abstrakt: |
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 (PO3ECs), 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 → 4f2and intraconfigurational 4f2transitions 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. |
| Databáze: |
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