Structure, photoluminescence, and scintillation characteristics of a Gd1.9Y0.1SiO5:0.5%Ce (GYSO:Ce) single crystal scintillator. (February 2018)

• Record Type: Journal Article
• Authors: Feng, He; Chen, Jianyu; Zhang, Zhijun; Wang, Yong; Xu, Zhan; Zhao, Jingtai; Mao, Rihua
• Is Part Of: Radiation measurements. Volume 109(2018:Feb.)
• Page Start: 8
• Page End: 12
• Publication Date: 2018-02
• Subjects: Crystal structure -- Energy transfer -- Luminescence mechanism -- Scintillator; Nuclear emulsions -- Periodicals; Particle tracks (Nuclear physics) -- Periodicals; Thermoluminescence -- Periodicals; Cosmic rays -- Periodicals; Radiation -- Measurement -- Periodicals; Radiometry -- Periodicals; Radiation Monitoring -- Periodicals; Émulsions nucléaires -- Périodiques; Particules (Physique nucléaire) -- Traces -- Périodiques; Thermoluminescence -- Périodiques; Rayonnement cosmique -- Périodiques; Radiométrie -- Périodiques; 539.77
• DOI: 10.1016/j.radmeas.2017.12.001
• Languages: English
• ISSNs: 1350-4487

Abstract

Abstract: A single crystal of Gd1.9 Y0.1 SiO5 :0.5%Ce (GYSO:Ce) was grown using the Czochralski method and its structure, photoluminescence, and scintillation properties were analyzed. Based on Rietveld structure refinement, we found that mixing with Y5at% changed the host structure very little. Two typical types of cerium emission, i.e., Ce1 and Ce2, were confirmed based on the photoluminescence excitation and emission spectra at 77 K. The energy transfer of Gd 6 PJ →Ce1 probably explains the slow component in the photoluminescence and scintillation processes. The light yield of the GYSO:Ce sample was determined as 11200 ph/MeV and the energy resolution was 8.6%. The afterglow intensity of GYSO:Ce was relatively low. Highlights: Single crystal of cerium-doped gadolinium yttrium (GYSO:Ce) was prepared. Structure, photoluminescence (PL), and scintillation properties were characterized. The structure of GYSO:Ce was determined by Rietveld refinement. Two energy transfer paths from Gd to Ce analyzed using PL and scintillation data.