TY - JOUR
T1 - Basic study of Europium doped LiCaAlF6 scintillator and its capability for thermal neutron imaging application
AU - Yanagida, Takayuki
AU - Kawaguchi, Noriaki
AU - Fujimoto, Yutaka
AU - Fukuda, Kentaro
AU - Yokota, Yuui
AU - Yamazaki, Atsushi
AU - Watanabe, Kenichi
AU - Pejchal, Jan
AU - Uritani, Akira
AU - Iguchi, Tetsuo
AU - Yoshikawa, Akira
N1 - Funding Information:
This work was mainly supported by JST Sentan and partially supported by a Grant-in-Aid for Young Scientists (B)-15686001, and (A)-19686001 from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese government (MEXT). This work is also supported by Ministry of Ministry of Health and Welfare, Grant-in-Aid for the development of medical instruments. Partial support of the Yazaki Memorial Foundation for Science and Technology, Japan Science Society, Sumitomo Foundation, and Iketani Science and Technology Foundation, are also gratefully acknowledged. The part of this work was performed under the Common-Use Facility Program of Japan Atomic Energy Agency (JAEA).
PY - 2011/6
Y1 - 2011/6
N2 - Eu2+ 0.1, 0.5, 1, and 2 mol% doped LiCaAlF6 single crystalline scintillators were grown by the micro-pulling down (μ-PD) method. Eu2+ 2 mol% doped LiCaAlF6 was also prepared using the Czochralski method. In the transmittance spectra, 4f-5d absorption lines appeared around 200-220 and 290-350 nm. An intense emission at 375 nm due to Eu2+ 5d-4f transition was observed under 241Am α-ray excitation. When 252Cf excited pulse height spectra were measured, Eu 2% doped one showed the highest light yield of 29,000 ph/n with 1.15 μs decay time. Using the 2 inch Czochralski grown one coupled with the position sensitive photomultiplier tube covered by Cd mask with various size (1, 2, 3, and 5 mm) pin holes, thermal neutron imaging was examined. As a result, the spatial resolution turned out to be better than 1 mm.
AB - Eu2+ 0.1, 0.5, 1, and 2 mol% doped LiCaAlF6 single crystalline scintillators were grown by the micro-pulling down (μ-PD) method. Eu2+ 2 mol% doped LiCaAlF6 was also prepared using the Czochralski method. In the transmittance spectra, 4f-5d absorption lines appeared around 200-220 and 290-350 nm. An intense emission at 375 nm due to Eu2+ 5d-4f transition was observed under 241Am α-ray excitation. When 252Cf excited pulse height spectra were measured, Eu 2% doped one showed the highest light yield of 29,000 ph/n with 1.15 μs decay time. Using the 2 inch Czochralski grown one coupled with the position sensitive photomultiplier tube covered by Cd mask with various size (1, 2, 3, and 5 mm) pin holes, thermal neutron imaging was examined. As a result, the spatial resolution turned out to be better than 1 mm.
KW - Neutron
KW - Scintillation detector
KW - Scintillator
KW - Single crystal
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U2 - 10.1016/j.optmat.2011.02.016
DO - 10.1016/j.optmat.2011.02.016
M3 - Article
AN - SCOPUS:79956347512
VL - 33
SP - 1243
EP - 1247
JO - Optical Materials
JF - Optical Materials
SN - 0925-3467
IS - 8
ER -