Pr3+ -doped fluoro-oxide lithium glass as scintillator for nuclear fusion diagnostics

Yasunobu Arikawa, Kohei Yamanoi, Tomoharu Nakazato, Elmer Surat Estacio, Toshihiko Shimizu, Nobuhiko Sarukura, Mitsuo Nakai, Takayoshi Norimatsu, Hiroshi Azechi, Takahiro Murata, Shigeru Fujino, Hideki Yoshida, Kei Kamada, Yoshiyuki Usuki, Toshihisa Suyama, Akira Yoshikawa, Nakahiro Sato, Hirofumi Kan

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    34 Citations (Scopus)

    Abstract

    Experimental results are presented on the neutron scintillating properties of a custom-designed Pr3+ (praseodymium) -doped lithium (Li) glass. Luminescence was observed at 278 nm wavelength, originating from the 5d-4f transition. Time-resolved measurements yielded about 20 ns decay times for ultraviolet and x-ray excitation while much faster decay times of about 6 ns were observed for alpha particle and neutron excitation. Actual time-of-flight data in laser fusion experiments at the GEKKO XII facility of the Institute of Laser Engineering, Osaka University reveal that it can clearly discriminate fusion neutrons from the much stronger x-rays signals. This material can promise improved accuracy in future scattered neutron diagnostics.

    Original languageEnglish
    Article number113504
    JournalReview of Scientific Instruments
    Volume80
    Issue number11
    DOIs
    Publication statusPublished - Dec 16 2009

    All Science Journal Classification (ASJC) codes

    • Instrumentation

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