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Y Arikawa, K Yamanoi,
T Nakazato,
E S Estacio,
T Shimizu,
N Sarukura,
M Nakai,
H Hosoda,
T Norimatsu,
Y Hironaka, [......],
N Izumi,
T Murata,
S Fujino,
H Yoshida,
K Kamada,
Y Usuki,
T Suyama,
A Yoshikawa,
N Satoh,
H Kan
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ABSTRACT: A custom developed (6)Li glass scintillator (APLF80+3Pr) for down-scattered neutron diagnostics in inertial confinement fusion experiments is presented. (6)Li provides an enhanced sensitivity for down-scattered neutrons in DD fusion and its experimentally observed 5-6 ns response time fulfills the requirement for down-scattered neutron detectors. A time-of-flight detector operating in the current mode using the APLF80+3Pr was designed and its feasibility observing down-scattered neutrons was demonstrated. Furthermore, a prototype design for a down-scattered neutron imaging detector was also demonstrated. This material promises viability as a future down-scattered neutron detector for the National Ignition Facility.
The Review of scientific instruments 10/2010; 81(10):10D303. · 1.52 Impact Factor
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Y Arikawa,
T Murata,
S Fujino,
H Yoshida, K Yamanoi,
T Nakazato,
T Shimizu,
N Sarukura,
M Nakai,
T Norimatsu,
H Azechi,
K Kamada,
Y Usuki,
T Suyama,
A Yoshikawa,
N Satoh,
H Kan
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ABSTRACT: Experimental results are presented on the neutron scintillating properties of a custom-designed Praseodymium-doped Lithium-6 glass for a new deuterium-deuterium (DD) fusion scattered-neutron detector. Luminescence was observed at 278 nm-wavelength, and time-resolved measurement yielded ~5.4 ns decay time for neutron excitation. Actual time-of-flight data in laser fusion experiments at the GEKKO XII facility at the Institute of Laser Engineering (ILE), Osaka University reveal that it can clearly discriminate fusion primary-neutrons from the x-ray signals. This material promises the realization of more accurate DD fusion scattered-neutron diagnostics. Design work for a scattered-neutron detector is being conducted for the Fast Ignition Realization Experiment (FIRE-X) at ILE.
Journal of Physics Conference Series 09/2010; 244(3):032041.
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T. Nakazato,
M. Cadatal-Raduban, K. Yamanoi,
M. Tsuboi,
Y. Furukawa,
M. Pham,
E. Estacio,
T. Shimizu,
N. Sarukura,
K. Fukuda,
T. Suyama,
T. Yanagida,
Y. Yokota,
A. Yoshikawa,
F. Saito
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ABSTRACT: Vacuum ultraviolet fluorescence from Czochralski method-grown Nd<sup>3+</sup>:LaF<sub>3</sub> excited by 290 nm femtosecond pulses from a Ti:sapphire laser is reported. Peak emission at 175 nm with 7 ns lifetime is observed. This decay time would be one of the fastest among solid-state, inorganic scintillators. Laser emission in the VUV region may also be achievable by pumping with existing ultraviolet solid-state lasers.
IEEE Transactions on Nuclear Science 07/2010; · 1.45 Impact Factor
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T. Shimizu,
M. Cadatal-Raduban, K. Yamanoi,
S. Takatori,
M. Kouno,
M. Pham,
E. Estacio,
T. Nakazato,
N. Sarukura,
N. Kawaguchi,
K. Fukuda,
T. Suyama,
T. Yanagida,
Y. Yokota,
A. Yoshikawa,
F. Saito
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ABSTRACT: We report the vacuum ultraviolet luminescence characteristics of a micro-pulling down method grown Er<sup>3+</sup>:LiCaAlF<sub>6</sub>. Emission at 163 nm with a lifetime of 1.3-μs observed with F<sub>2</sub> laser (157-nm) pumping. This is one of the shortest emission wavelengths reported from a rare-earth doped fluoride at room temperature.
IEEE Transactions on Nuclear Science 07/2010; · 1.45 Impact Factor
