TY - JOUR
T1 - Gamma-ray responses of Pr:LuYAP and Pr:YAP scintillators
AU - Yanagida, Takayuki
AU - Kamada, Kei
AU - Yokota, Yuui
AU - Fujimoto, Yutaka
AU - Maeo, Shuji
AU - Yoshikawa, Akira
N1 - Funding Information:
Manuscript received June 17, 2009; revised August 28, 2009; accepted September 25, 2009. Date of current version June 16, 2010. This work was partially supported 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). The partial support of the Yazaki Memorial Foundation for Science and Technology, Japan Science Society, and Iketani Science and Technology Foundation is also gratefully acknowledged.
PY - 2010/6
Y1 - 2010/6
N2 - Pr3+ doped LuYAP crystal was grown by the Czochralski method with 1 inch diameter and 10 cm length. In order to compare scintillation characteristics, Pr 3+ doped YAP crystal was also grown by the micro-pulling-down method. Absorption spectra of them were measured and Pr 3+ 4f → 4f5d and 4f2 → 4f absorption lines were observed at 230,470, and 600 nm, respectively. In photoluminescence measurements, here excited by Xe lamp pulse of wavelength around 223,250 and 280 nm emission lines due to Pr3+ 4f5d → 4f transition were detected. When coupled with PMT R7600 and irradiated by gamma-rays, gamma-ray induced light yields were estimated as 1900 ph/MeV for Pr:LuYAP and 5600 ph/MeV for Pr:YAP. In both crystals, light yield non-proportionality and energy resolution were investigated by individual lines in the gamma-ray energy range from 59.5 keV to 1408 keV. The gamma-ray excited decay time constants turned out to be 9.8 ns for Pr:LuYAP and 9.0 ns for Pr:YAP.
AB - Pr3+ doped LuYAP crystal was grown by the Czochralski method with 1 inch diameter and 10 cm length. In order to compare scintillation characteristics, Pr 3+ doped YAP crystal was also grown by the micro-pulling-down method. Absorption spectra of them were measured and Pr 3+ 4f → 4f5d and 4f2 → 4f absorption lines were observed at 230,470, and 600 nm, respectively. In photoluminescence measurements, here excited by Xe lamp pulse of wavelength around 223,250 and 280 nm emission lines due to Pr3+ 4f5d → 4f transition were detected. When coupled with PMT R7600 and irradiated by gamma-rays, gamma-ray induced light yields were estimated as 1900 ph/MeV for Pr:LuYAP and 5600 ph/MeV for Pr:YAP. In both crystals, light yield non-proportionality and energy resolution were investigated by individual lines in the gamma-ray energy range from 59.5 keV to 1408 keV. The gamma-ray excited decay time constants turned out to be 9.8 ns for Pr:LuYAP and 9.0 ns for Pr:YAP.
KW - Gamma-ray detectors
KW - Praseodymium
KW - Radiation detectors
KW - Scintillation detectors
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U2 - 10.1109/TNS.2009.2033680
DO - 10.1109/TNS.2009.2033680
M3 - Article
AN - SCOPUS:77953943712
VL - 57
SP - 1316
EP - 1319
JO - IEEE Transactions on Nuclear Science
JF - IEEE Transactions on Nuclear Science
SN - 0018-9499
IS - 3 PART 2
M1 - 5485090
ER -