Photoluminescence and scintillation of LGS (La3Ga 5SiO14), LNGA (La3Nb0.5Ga 5.3Al0.2O14) and LTGA (La3Ta 0.5Ga5.3Al0.2O14) single crystals

Yoshisuke Futami; Takayuki Yanagida; Yutaka Fujimoto; Vitezslav Jary; Jan Pejchal; Yuui Yokota; Masae Kikuchi; Martin Nikl; Akira Yoshikawa

doi:10.1016/j.optmat.2012.02.046

Photoluminescence and scintillation of LGS (La₃Ga ₅SiO₁₄), LNGA (La₃Nb_0.5Ga _5.3Al_0.2O₁₄) and LTGA (La₃Ta _0.5Ga_5.3Al_0.2O₁₄) single crystals

Yoshisuke Futami, Takayuki Yanagida, Yutaka Fujimoto, Vitezslav Jary, Jan Pejchal, Yuui Yokota, Masae Kikuchi, Martin Nikl, Akira Yoshikawa

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

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 (La₃Nb_0.5Ga_5.3Al_0.2O₁₄) and LTGA (La₃Ta_0.5Ga_5.3Al_0.2O 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.

Original language	English
Pages (from-to)	1513-1516
Number of pages	4
Journal	Optical Materials
Volume	34
Issue number	9
DOIs	https://doi.org/10.1016/j.optmat.2012.02.046
Publication status	Published - 2012 Jul

Keywords

Alpha-ray
Photoluminescence
Scintillation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Computer Science(all)
Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Electrical and Electronic Engineering

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Photoluminescence and scintillation of LGS (La₃Ga ₅SiO₁₄), LNGA (La₃Nb_0.5Ga _5.3Al_0.2O₁₄) and LTGA (La₃Ta _0.5Ga_5.3Al_0.2O₁₄) single crystals. / Futami, Yoshisuke; Yanagida, Takayuki; Fujimoto, Yutaka; Jary, Vitezslav; Pejchal, Jan; Yokota, Yuui; Kikuchi, Masae; Nikl, Martin; Yoshikawa, Akira.

In: Optical Materials, Vol. 34, No. 9, 07.2012, p. 1513-1516.

Research output: Contribution to journal › Article › peer-review

@article{2b4dbcc0cffc4b8eaf9260b406557b53,

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",

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T1 - Photoluminescence and scintillation of LGS (La3Ga 5SiO14), LNGA (La3Nb0.5Ga 5.3Al0.2O14) and LTGA (La3Ta 0.5Ga5.3Al0.2O14) single crystals

AU - Futami, Yoshisuke

AU - Yanagida, Takayuki

AU - Fujimoto, Yutaka

AU - Jary, Vitezslav

AU - Pejchal, Jan

AU - Yokota, Yuui

AU - Kikuchi, Masae

AU - Nikl, Martin

AU - Yoshikawa, Akira

N1 - 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 ‘‘Materials Integration (International Center of Education and Research), Tohoku University,’’ 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.

PY - 2012/7

Y1 - 2012/7

N2 - 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.

AB - 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.

KW - Alpha-ray

KW - Photoluminescence

KW - Scintillation

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SN - 0925-3467

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