TY - JOUR
T1 - Scintillation timing characteristics of (La,Gd)2Si2O7:Ce and Gd2SiO5:Ce single crystal scintillators
T2 - A comparative study
AU - Chewpraditkul, Weerapong
AU - Sakthong, Ongsa
AU - Chewpraditkul, Warut
AU - Yawai, Nattasuda
AU - Szczesniak, Tomasz
AU - Swiderski, Lukasz
AU - Moszynski, Marek
AU - Kurosawa, Shunsuke
AU - Murakami, Rikito
AU - Horiai, Takahiko
AU - Yoshikawa, Akira
AU - Nikl, Martin
N1 - Funding Information:
This work is partially supported by the National Research Council of Thailand (NRCT project no. 2559A30602099 ) and King Mongkut’s University of Technology Thonburi . Partial support of the project of Czech-Japan collaboration, MEYS, KONTAKT II no. 14266 is also gratefully acknowledged.
Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2016/9/1
Y1 - 2016/9/1
N2 - The scintillation timing characteristics of (La,Gd)2Si2O7:Ce (GPSLa23.5%:Ce) single crystal were studied and compared with Gd2SiO5:Ce (GSO:Ce) single crystal. The photoelectron yield, scintillation decay times and coincidence time resolution were measured. At 511 keV γ-rays, the photoelectron yield of 10,770 ± 500 phe MeV−1 and energy resolution of 5.4 ± 0.2% obtained for GPSLa23.5%:Ce are much better than those of 3350 ± 160 phe MeV−1 and 7.8 ± 0.3% obtained for GSO:Ce. The scintillation decay time profile was measured by the time-correlated single photon counting technique using a fast-slow coincidence setup. In both materials the comparable rise times of several nanoseconds are present. The fast component decay time of 56 ns with relative intensity of 49% obtained for GPSLa23.5%:Ce is inferior to that of 32 ns(88%) obtained for GSO:Ce. Consequently, the coincidence time resolution of GPSLa23.5%:Ce is slightly worse than that of GSO:Ce. The normalized time resolution was also discussed in terms of a number of photoelectrons and decay time of the scintillation pulse.
AB - The scintillation timing characteristics of (La,Gd)2Si2O7:Ce (GPSLa23.5%:Ce) single crystal were studied and compared with Gd2SiO5:Ce (GSO:Ce) single crystal. The photoelectron yield, scintillation decay times and coincidence time resolution were measured. At 511 keV γ-rays, the photoelectron yield of 10,770 ± 500 phe MeV−1 and energy resolution of 5.4 ± 0.2% obtained for GPSLa23.5%:Ce are much better than those of 3350 ± 160 phe MeV−1 and 7.8 ± 0.3% obtained for GSO:Ce. The scintillation decay time profile was measured by the time-correlated single photon counting technique using a fast-slow coincidence setup. In both materials the comparable rise times of several nanoseconds are present. The fast component decay time of 56 ns with relative intensity of 49% obtained for GPSLa23.5%:Ce is inferior to that of 32 ns(88%) obtained for GSO:Ce. Consequently, the coincidence time resolution of GPSLa23.5%:Ce is slightly worse than that of GSO:Ce. The normalized time resolution was also discussed in terms of a number of photoelectrons and decay time of the scintillation pulse.
KW - (La,Gd)SiO:Ce, GdSiO:Ce
KW - Coincidence time resolution
KW - Energy resolution
KW - Scintillation decays
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U2 - 10.1016/j.radmeas.2016.06.008
DO - 10.1016/j.radmeas.2016.06.008
M3 - Article
AN - SCOPUS:84976569322
SN - 1350-4487
VL - 92
SP - 49
EP - 53
JO - Radiation Measurements
JF - Radiation Measurements
ER -