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

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


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
Issue number11
Publication statusPublished - 2009

ASJC Scopus subject areas

  • Instrumentation


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