TY - JOUR
T1 - Crystal growth and evaluations of Nd:LuLiF4 scintillators for different Nd concentration
AU - Yanagida, Takayuki
AU - Kawaguchi, Noriaki
AU - Ishizu, Sumito
AU - Yokota, Yuui
AU - Fukuda, Kentaro
AU - Suyama, Toshihisa
AU - Yoshikawa, Akira
AU - Sekiya, Hiroyuki
AU - Kubo, Hidetoshi
AU - Tanimori, Toru
AU - Chani, Valery
N1 - Funding Information:
Manuscript received June 16, 2009; revised September 18, 2009 and December 30, 2009; accepted February 04, 2010. Date of current version June 16, 2010. This work was supported in part by a Grant in Aid for Young Scientists (B), 15686001, 2009 from the Ministry of Education, Culture, Sports, Science, and Technology of the Japanese Government (MEXT), in part by the Yazaki Memorial Foundation for Science and Technology, in part by the Japan Science Society, in part by the Sumitomo Foundation, and in part by the Iketani Science and Technology Foundation.
PY - 2010/6
Y1 - 2010/6
N2 - In order to develop novel scintillating materials, we grew 0.5 mol%, 1 mol%, and 3 mol% Nd-doped LuLiF4 scintillators by the micro-pulling down method, because LuLiF4 has a very wide band gap and Nd 3+ shows fast and intense 5d-4f emission as a luminescence center. The transmittance and emission peaks were examined in these three samples by using our original spectrometer made by Bunkou-Keiki Company. At wavelengths longer than 180 nm, approximately 60-80% transmittance with three absorption peaks around 140, 160 and 175 nm and emission peak at approximately 180 nm were observed for all the crystals. Light yields and decay time constants of the samples irradiated by 241 Am α-ray were measured using photomultiplier tubes R8778 (Hamamatsu). The light yield of the 1 mol% doped LuLiF4 was 700 photons/5.5MeV α that is much greater than that of Nd:LaF3 scintillator (100 photons/5.5MeV α). As for decay time profiles, the main component of Nd:LuLiF4 was 12 ns in the case of α-ray irradiation. 137Cs 662 keV γ-ray photoabsorption peak was detected in 1 mol% doped LuLiF4 only, and the light yield was 300 ph/MeV.
AB - In order to develop novel scintillating materials, we grew 0.5 mol%, 1 mol%, and 3 mol% Nd-doped LuLiF4 scintillators by the micro-pulling down method, because LuLiF4 has a very wide band gap and Nd 3+ shows fast and intense 5d-4f emission as a luminescence center. The transmittance and emission peaks were examined in these three samples by using our original spectrometer made by Bunkou-Keiki Company. At wavelengths longer than 180 nm, approximately 60-80% transmittance with three absorption peaks around 140, 160 and 175 nm and emission peak at approximately 180 nm were observed for all the crystals. Light yields and decay time constants of the samples irradiated by 241 Am α-ray were measured using photomultiplier tubes R8778 (Hamamatsu). The light yield of the 1 mol% doped LuLiF4 was 700 photons/5.5MeV α that is much greater than that of Nd:LaF3 scintillator (100 photons/5.5MeV α). As for decay time profiles, the main component of Nd:LuLiF4 was 12 ns in the case of α-ray irradiation. 137Cs 662 keV γ-ray photoabsorption peak was detected in 1 mol% doped LuLiF4 only, and the light yield was 300 ph/MeV.
KW - Gamma-ray detectors
KW - Neodymium
KW - Radiation detectors
KW - Scintillation detectors
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U2 - 10.1109/TNS.2010.2042965
DO - 10.1109/TNS.2010.2042965
M3 - Article
AN - SCOPUS:77953923810
SN - 0018-9499
VL - 57
SP - 1312
EP - 1315
JO - IEEE Transactions on Nuclear Science
JF - IEEE Transactions on Nuclear Science
IS - 3 PART 2
M1 - 5485088
ER -