Scintillation properties of Gd3(Al5-xGax)O12:Ce (x = 2.3, 2.6, 3.0) single crystals

Warut Chewpraditkul; Nakarin Pattanaboonmee; Ongsa Sakthong; Weerapong Chewpraditkul; Tomasz Szczesniak; Marek Moszynski; Kei Kamada; Shunsuke Kurosawa; Akira Yoshikawa; Martin Nikl

doi:10.1016/j.optmat.2018.05.015

Scintillation properties of Gd₃(Al_5-xGa_x)O₁₂:Ce (x = 2.3, 2.6, 3.0) single crystals

Warut Chewpraditkul, Nakarin Pattanaboonmee, Ongsa Sakthong, Weerapong Chewpraditkul, Tomasz Szczesniak, Marek Moszynski, Kei Kamada, Shunsuke Kurosawa, Akira Yoshikawa, Martin Nikl

Research output: Contribution to journal › Article

4 Citations (Scopus)

Abstract

Scintillation properties of Czochralski-grown Gd₃(Al_5-xGa_x)O₁₂:Ce (x = 2.3, 2.6, 3.0) single crystals were investigated. With increasing Ga content in garnet host, the radioluminescence band due to 5d₁ → 4f emission transition was blue-shifted due to a decrease in the crystal field splitting of the 5 d levels. At 662 keV γ rays, the LY value of 47,000, 55,100 and 51,900 ph/MeV was obtained for Gd₃Al_2.7Ga_2.3O₁₂:Ce, Gd₃Al_2.4Ga_2.6O₁₂:Ce and Gd₃Al₂Ga₃O₁₂:Ce, respectively. In spite of a lower LY value, Gd₃Al_2.7Ga_2.3O₁₂:Ce shows good energy resolution of 4.1% due to its proportionality of LY. The ratio of LY values under excitation with α- and γ-rays (α/γ ratio) was also determined. The fast component decay time with relative intensity of 146 ns (66%), 142 ns (76%) and 112 ns (76%) was measured in the scintillation decay of Gd₃Al_2.7Ga_2.3O₁₂:Ce, Gd₃Al_2.4Ga_2.6O₁₂:Ce and Gd₃Al₂Ga₃O₁₂:Ce, respectively. Good coincidence time resolution of Gd₃Al₂Ga₃O₁₂:Ce is due to a high initial photon emission rate.

Original language	English
Pages (from-to)	23-29
Number of pages	7
Journal	Optical Materials
Volume	81
DOIs	https://doi.org/10.1016/j.optmat.2018.05.015
Publication status	Published - 2018 Jul 1

Keywords

Coincidence time resolution
Energy resolution
Gd(Al,Ga) O:Ce
Light yield
Nonproportionality of light yield
Scintillation decay

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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Chewpraditkul, W., Pattanaboonmee, N., Sakthong, O., Chewpraditkul, W., Szczesniak, T., Moszynski, M., Kamada, K., Kurosawa, S., Yoshikawa, A., & Nikl, M. (2018). Scintillation properties of Gd₃(Al_5-xGa_x)O₁₂:Ce (x = 2.3, 2.6, 3.0) single crystals. Optical Materials, 81, 23-29. https://doi.org/10.1016/j.optmat.2018.05.015

Scintillation properties of Gd₃(Al_5-xGa_x)O₁₂:Ce (x = 2.3, 2.6, 3.0) single crystals. / Chewpraditkul, Warut; Pattanaboonmee, Nakarin; Sakthong, Ongsa; Chewpraditkul, Weerapong; Szczesniak, Tomasz; Moszynski, Marek; Kamada, Kei ; Kurosawa, Shunsuke ; Yoshikawa, Akira; Nikl, Martin.

In: Optical Materials, Vol. 81, 01.07.2018, p. 23-29.

Research output: Contribution to journal › Article

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title = "Scintillation properties of Gd3(Al5-xGax)O12:Ce (x = 2.3, 2.6, 3.0) single crystals",

abstract = "Scintillation properties of Czochralski-grown Gd3(Al5-xGax)O12:Ce (x = 2.3, 2.6, 3.0) single crystals were investigated. With increasing Ga content in garnet host, the radioluminescence band due to 5d1 → 4f emission transition was blue-shifted due to a decrease in the crystal field splitting of the 5 d levels. At 662 keV γ rays, the LY value of 47,000, 55,100 and 51,900 ph/MeV was obtained for Gd3Al2.7Ga2.3O12:Ce, Gd3Al2.4Ga2.6O12:Ce and Gd3Al2Ga3O12:Ce, respectively. In spite of a lower LY value, Gd3Al2.7Ga2.3O12:Ce shows good energy resolution of 4.1% due to its proportionality of LY. The ratio of LY values under excitation with α- and γ-rays (α/γ ratio) was also determined. The fast component decay time with relative intensity of 146 ns (66%), 142 ns (76%) and 112 ns (76%) was measured in the scintillation decay of Gd3Al2.7Ga2.3O12:Ce, Gd3Al2.4Ga2.6O12:Ce and Gd3Al2Ga3O12:Ce, respectively. Good coincidence time resolution of Gd3Al2Ga3O12:Ce is due to a high initial photon emission rate.",

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T1 - Scintillation properties of Gd3(Al5-xGax)O12:Ce (x = 2.3, 2.6, 3.0) single crystals

AU - Chewpraditkul, Warut

AU - Pattanaboonmee, Nakarin

AU - Sakthong, Ongsa

AU - Chewpraditkul, Weerapong

AU - Szczesniak, Tomasz

AU - Moszynski, Marek

AU - Kamada, Kei

AU - Kurosawa, Shunsuke

AU - Yoshikawa, Akira

AU - Nikl, Martin

PY - 2018/7/1

Y1 - 2018/7/1

N2 - Scintillation properties of Czochralski-grown Gd3(Al5-xGax)O12:Ce (x = 2.3, 2.6, 3.0) single crystals were investigated. With increasing Ga content in garnet host, the radioluminescence band due to 5d1 → 4f emission transition was blue-shifted due to a decrease in the crystal field splitting of the 5 d levels. At 662 keV γ rays, the LY value of 47,000, 55,100 and 51,900 ph/MeV was obtained for Gd3Al2.7Ga2.3O12:Ce, Gd3Al2.4Ga2.6O12:Ce and Gd3Al2Ga3O12:Ce, respectively. In spite of a lower LY value, Gd3Al2.7Ga2.3O12:Ce shows good energy resolution of 4.1% due to its proportionality of LY. The ratio of LY values under excitation with α- and γ-rays (α/γ ratio) was also determined. The fast component decay time with relative intensity of 146 ns (66%), 142 ns (76%) and 112 ns (76%) was measured in the scintillation decay of Gd3Al2.7Ga2.3O12:Ce, Gd3Al2.4Ga2.6O12:Ce and Gd3Al2Ga3O12:Ce, respectively. Good coincidence time resolution of Gd3Al2Ga3O12:Ce is due to a high initial photon emission rate.

AB - Scintillation properties of Czochralski-grown Gd3(Al5-xGax)O12:Ce (x = 2.3, 2.6, 3.0) single crystals were investigated. With increasing Ga content in garnet host, the radioluminescence band due to 5d1 → 4f emission transition was blue-shifted due to a decrease in the crystal field splitting of the 5 d levels. At 662 keV γ rays, the LY value of 47,000, 55,100 and 51,900 ph/MeV was obtained for Gd3Al2.7Ga2.3O12:Ce, Gd3Al2.4Ga2.6O12:Ce and Gd3Al2Ga3O12:Ce, respectively. In spite of a lower LY value, Gd3Al2.7Ga2.3O12:Ce shows good energy resolution of 4.1% due to its proportionality of LY. The ratio of LY values under excitation with α- and γ-rays (α/γ ratio) was also determined. The fast component decay time with relative intensity of 146 ns (66%), 142 ns (76%) and 112 ns (76%) was measured in the scintillation decay of Gd3Al2.7Ga2.3O12:Ce, Gd3Al2.4Ga2.6O12:Ce and Gd3Al2Ga3O12:Ce, respectively. Good coincidence time resolution of Gd3Al2Ga3O12:Ce is due to a high initial photon emission rate.

KW - Coincidence time resolution

KW - Energy resolution

KW - Gd(Al,Ga) O:Ce

KW - Light yield

KW - Nonproportionality of light yield

KW - Scintillation decay

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