The Stable Ce4+ Center: A New Tool to Optimize Ce-Doped Oxide Scintillators

Martin Nikl; Vladimir Babin; Jan Pejchal; Valentin V. Laguta; Maksym Buryi; Jiri A. Mares; Kei Kamada; Shunsuke Kurosawa; Akira Yoshikawa; Dalibor Panek; Tomas Parkman; Petr Bruza; Klaus Mann; Matthias Muller

doi:10.1109/TNS.2015.2495119

The Stable Ce⁴⁺ Center: A New Tool to Optimize Ce-Doped Oxide Scintillators

Martin Nikl, Vladimir Babin, Jan Pejchal, Valentin V. Laguta, Maksym Buryi, Jiri A. Mares, Kei Kamada, Shunsuke Kurosawa, Akira Yoshikawa, Dalibor Panek, Tomas Parkman, Petr Bruza, Klaus Mann, Matthias Muller

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

31 Citations (Scopus)

Abstract

The role and effect of stable Ce⁴⁺ centers in Ce-doped LuAG single crystal scintillator is further studied by means of measurements of several optical, luminescence and scintillation characteristics. Two LuAG:Ce single crystal samples are compared: in one of them the dominating Ce⁴⁺ center is stabilized by high concentration Mg²⁺ codoping while the other one shows only the presence of stable Ce³⁺ center. Tailored (Eu, Mg)-doped LuAG single crystal is also prepared to test the presence and thermal stability of hole traps in the host which affect the timing characteristics of Ce⁴⁺ scintillation cycle, namely its restoration back to 4+ charge state in last step of the cycle. EPR experiment was also employed at Mg-and (Eu, Mg) doped LuAG samples and the signature of the O^- hole center stabilized by Mg²⁺ ion was clearly obtained.

Original language	English
Article number	7412783
Pages (from-to)	433-438
Number of pages	6
Journal	IEEE Transactions on Nuclear Science
Volume	63
Issue number	2
DOIs	https://doi.org/10.1109/TNS.2015.2495119
Publication status	Published - 2016 Apr

Keywords

Ce
LuAG
O
X-ray detection
gamma-ray detection
scintillator

ASJC Scopus subject areas

Nuclear and High Energy Physics
Nuclear Energy and Engineering
Electrical and Electronic Engineering

Access to Document

10.1109/TNS.2015.2495119

Cite this

The Stable Ce⁴⁺ Center : A New Tool to Optimize Ce-Doped Oxide Scintillators. / Nikl, Martin; Babin, Vladimir; Pejchal, Jan; Laguta, Valentin V.; Buryi, Maksym; Mares, Jiri A.; Kamada, Kei ; Kurosawa, Shunsuke ; Yoshikawa, Akira; Panek, Dalibor; Parkman, Tomas; Bruza, Petr; Mann, Klaus; Muller, Matthias.

In: IEEE Transactions on Nuclear Science, Vol. 63, No. 2, 7412783, 04.2016, p. 433-438.

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

Nikl, Martin ; Babin, Vladimir ; Pejchal, Jan ; Laguta, Valentin V. ; Buryi, Maksym ; Mares, Jiri A. ; Kamada, Kei ; Kurosawa, Shunsuke ; Yoshikawa, Akira ; Panek, Dalibor ; Parkman, Tomas ; Bruza, Petr ; Mann, Klaus ; Muller, Matthias. / The Stable Ce⁴⁺ Center : A New Tool to Optimize Ce-Doped Oxide Scintillators. In: IEEE Transactions on Nuclear Science. 2016 ; Vol. 63, No. 2. pp. 433-438.

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title = "The Stable Ce4+ Center: A New Tool to Optimize Ce-Doped Oxide Scintillators",

abstract = "The role and effect of stable Ce4+ centers in Ce-doped LuAG single crystal scintillator is further studied by means of measurements of several optical, luminescence and scintillation characteristics. Two LuAG:Ce single crystal samples are compared: in one of them the dominating Ce4+ center is stabilized by high concentration Mg2+ codoping while the other one shows only the presence of stable Ce3+ center. Tailored (Eu, Mg)-doped LuAG single crystal is also prepared to test the presence and thermal stability of hole traps in the host which affect the timing characteristics of Ce4+ scintillation cycle, namely its restoration back to 4+ charge state in last step of the cycle. EPR experiment was also employed at Mg-and (Eu, Mg) doped LuAG samples and the signature of the O- hole center stabilized by Mg2+ ion was clearly obtained.",

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author = "Martin Nikl and Vladimir Babin and Jan Pejchal and Laguta, {Valentin V.} and Maksym Buryi and Mares, {Jiri A.} and Kei Kamada and Shunsuke Kurosawa and Akira Yoshikawa and Dalibor Panek and Tomas Parkman and Petr Bruza and Klaus Mann and Matthias Muller",

note = "Funding Information: The support of Czech Science Foundation Grant 15-18300Y and MEYS INGO LG13029 is gratefully acknowledged. Support from the Development of Systems and Technology for Advanced Measurement and Analysis, Japan Science and Technology Agency (JST) and Adaptable and Seamless Technology Transfer Program through Target-driven R and D (A-STEP), JST is also greatly appreciated. Publisher Copyright: {\textcopyright} 2015 IEEE.",

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N2 - The role and effect of stable Ce4+ centers in Ce-doped LuAG single crystal scintillator is further studied by means of measurements of several optical, luminescence and scintillation characteristics. Two LuAG:Ce single crystal samples are compared: in one of them the dominating Ce4+ center is stabilized by high concentration Mg2+ codoping while the other one shows only the presence of stable Ce3+ center. Tailored (Eu, Mg)-doped LuAG single crystal is also prepared to test the presence and thermal stability of hole traps in the host which affect the timing characteristics of Ce4+ scintillation cycle, namely its restoration back to 4+ charge state in last step of the cycle. EPR experiment was also employed at Mg-and (Eu, Mg) doped LuAG samples and the signature of the O- hole center stabilized by Mg2+ ion was clearly obtained.

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