Afterglow and Quantum Tunneling in Ce-Doped Lutetium Aluminum Garnet

E. Mihokova; V. Babin; Jan Pejchal; V. Cuba; J. Barta; K. Popovich; L. S. Schulman; A. Yoshikawa; M. Nikl

doi:10.1109/TNS.2018.2823582

Afterglow and Quantum Tunneling in Ce-Doped Lutetium Aluminum Garnet

E. Mihokova, V. Babin, Jan Pejchal, V. Cuba, J. Barta, K. Popovich, L. S. Schulman, A. Yoshikawa, M. Nikl

Materials Property Division

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

We study the presence of quantum tunneling between the Ce³⁺ activator and host traps in lutetium aluminum garnet (LuAG). We monitor the afterglow of several Ce³⁺ (Mg²⁺)-doped LuAG samples in crystal and powder forms. The experiment is performed in the extended temperature range of 77-400 K. An inverse power-law function is fit to the data. A power-law exponent close to 1 confirms that the signal observed up to temperatures around 200-250 K is due to quantum tunneling between the Ce activators and traps.

Original language	English
Article number	8331929
Pages (from-to)	2085-2089
Number of pages	5
Journal	IEEE Transactions on Nuclear Science
Volume	65
Issue number	8
DOIs	https://doi.org/10.1109/TNS.2018.2823582
Publication status	Published - 2018 Aug

Keywords

Garnets
luminescence
scintillator
tunneling

ASJC Scopus subject areas

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

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abstract = "We study the presence of quantum tunneling between the Ce3+ activator and host traps in lutetium aluminum garnet (LuAG). We monitor the afterglow of several Ce3+ (Mg2+)-doped LuAG samples in crystal and powder forms. The experiment is performed in the extended temperature range of 77-400 K. An inverse power-law function is fit to the data. A power-law exponent close to 1 confirms that the signal observed up to temperatures around 200-250 K is due to quantum tunneling between the Ce activators and traps.",

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AU - Mihokova, E.

AU - Babin, V.

AU - Pejchal, Jan

AU - Cuba, V.

AU - Barta, J.

AU - Popovich, K.

AU - Schulman, L. S.

AU - Yoshikawa, A.

AU - Nikl, M.

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KW - luminescence

KW - scintillator

KW - tunneling

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