Crystal growth and scintillation properties of La0.2Ce0.05Gd1.75Si2O7 (La-GPS) single crystal with triclinic structure

• Published in: Optical materials Vol. 36; no. 3; pp. 665 - 669
• Main Authors: Tsubota, Youichi, Kaneko, Junichi H., Higuchi, Mikio, Minagawa, Moyuru, Ishibashi, Hiroyuki
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier B.V 01.01.2014; Elsevier
• Subjects: Cerium; Cross-disciplinary physics: materials science; rheology; Crystal growth; Decay; Energy resolution; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Gamma-ray spectrum; Growth from solutions; Inorganic scintillator; La-substitute Gd2Si2O7; Materials science; Methods of crystal growth; physics of crystal growth; Optical materials; Optics; Physics; Quenching; Scintillation properties; Seeds; Single crystals; Triclinic crystals; Scintillation properties; Gamma-ray spectrum; La-substitute Gd2Si2O7; Inorganic scintillator; Scintillations; La-substitute Cd; TSSG method; Gamma spectra; Sensor materials; O; Monocrystals; Scintillator; Si; Crystal growth from solutions; Optical materials; Triclinic crystals; ns range
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/j.optmat.2013.11.007

•The La-GPS with both low cerium concentration and the triclinic structure was grown using the TSSG method.•The grown La-GPS single crystal showed light yield that was 1.2 times larger than NaI:Tl.•Self-absorption of emission light was reduced by the reduction of cerium concentration. La-substitute GPS with triclinic structure was grown using a top-seeded solution growth (TSSG) method to reduce concentration quenching by cerium. The low cerium concentration of 2.5% and triclinic crystal seed were chosen for crystal growth. The grown La-GPS single crystal showed light yield that was 1.2 times larger than NaI:Tl. Decay time and energy resolution for 662keV gamma-rays were, respectively, 90ns and 7.1%.