| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5489598 | Journal of Crystal Growth | 2017 | 4 Pages |
Abstract
Praseodymium-doped (Gd2Y)(Ga3Al2)O12 (GYGAG: Pr) single crystals are grown by the micro-pulling down method with different Pr concentrations. The energy transfer process between Pr3+ and Gd3+ is investigated by photoluminescence excitation (PLE) and emission (PL) spectra measurements. Photoelectron yield measurements are carried out using photomultiplier. At 662 keV γ-rays, photoelectron yield of 2520 phe/MeV obtained for the GYGAG: Pr (0.01%) sample is larger than that of 1810 phe/MeV obtained for BGO crystal. Light yield degradation for the GYGAG: Pr scintillators is presumably due to the energy transfer from 5d state of Pr3+ to 4f state of Gd3+ together with the concentration quenching in the Gd3+-sublattice.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Prapon Lertloypanyachai, Nichakorn Pathumrangsan, Krittiya Sreebunpeng, Nakarin Pattanaboonmee, Weerapong Chewpraditkul, Akira Yoshikawa, Kei Kamada, Martin Nikl,