Pr3+-doped fluoro-oxide lithium glass as scintillator for nuclear fusion diagnostics.
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.
Arikawa
Yasunobu
Y
Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan. arikawa-y@ile.osaka-u.ac.jp
Yamanoi
Kohei
K
Nakazato
Tomoharu
T
Estacio
Elmer Surat
ES
Shimizu
Toshihiko
T
Sarukura
Nobuhiko
N
Nakai
Mitsuo
M
Norimatsu
Takayoshi
T
Azechi
Hiroshi
H
Murata
Takahiro
T
Fujino
Shigeru
S
Yoshida
Hideki
H
Kamada
Kei
K
Usuki
Yoshiyuki
Y
Suyama
Toshihisa
T
Yoshikawa
Akira
A
Sato
Nakahiro
N
Kan
Hirofumi
H