@article{f7f7c00d797c488dbd2d093df708f1d9,
title = "Photoluminescence and scintillation of LGS (La3Ga 5SiO14), LNGA (La3Nb0.5Ga 5.3Al0.2O14) and LTGA (La3Ta 0.5Ga5.3Al0.2O14) single crystals",
abstract = "To examine scintillation response of piezoelectric crystals the 241Am 5.5 MeV α-ray excited emission spectra of langasite family crystals, LGS (La3Ga5SiO14), LNGA (La3Nb0.5Ga5.3Al0.2O14) and LTGA (La3Ta0.5Ga5.3Al0.2O 14) were measured. Dominating emission bands were observed at 378 nm for LGS, 556 nm for LNGA and 425 nm for LTGA. X-ray excited radioluminescence intensity of these crystals was quantitatively compared with BGO standard scintillator. Photoluminescence 2D-spectra were measured as well and compared with radioluminescence ones. In LTGA also photoluminescence decays were measured for two dominant contributing emission centers. Observed emission bands within 300-360 nm and beyond 400 nm most probably belong to self-trapped or trapped excitons and lattice defects, respectively.",
keywords = "Alpha-ray, Photoluminescence, Scintillation",
author = "Yoshisuke Futami and Takayuki Yanagida and Yutaka Fujimoto and Vitezslav Jary and Jan Pejchal and Yuui Yokota and Masae Kikuchi and Martin Nikl and Akira Yoshikawa",
note = "Funding Information: The authors wish to express their gratitude to Mr. Y. Murakami, Institute for Materials Research, for his help on the SEM-EPMA analysis. This work was partially supported by Global COE Program {\textquoteleft}{\textquoteleft}Materials Integration (International Center of Education and Research), Tohoku University,{\textquoteright}{\textquoteright} MEXT, Japan. This work was partially supported by the funding program for next generation world-leading researchers, Japan society for promotion of science. Partial support from Strategic advanced technology support program, Ministry of Economy, Trade and Industry is also greatly appreciated. Support of Czech–Japanese collaboration project, AS CR No. M100100910, is gratefully acknowledged.",
year = "2012",
month = jul,
doi = "10.1016/j.optmat.2012.02.046",
language = "English",
volume = "34",
pages = "1513--1516",
journal = "Optical Materials",
issn = "0925-3467",
publisher = "Elsevier",
number = "9",
}