Afterglow and quantum tunneling in Ce-Doped lutetium aluminum garnet

0492842 - FZÚ 2019 RIV US eng J - Journal Article
Mihóková, Eva - Babin, Vladimir - Pejchal, Jan - Čuba, V. - Bárta, J. - Popovich, K. - Schulman, L. S. - Yoshikawa, A. - Nikl, Martin
Afterglow and quantum tunneling in Ce-Doped lutetium aluminum garnet.
IEEE Transactions on Nuclear Science. Roč. 65, č. 8 (2018), s. 2085-2089. ISSN 0018-9499. E-ISSN 1558-1578
R&D Projects: GA ČR GA17-06479S
Institutional support: RVO:68378271
Keywords : garnets * luminescence * scintillator * tunneling
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.428, year: 2018

We study the presence of quantum tunneling between the Cesup3+/sup activator and host traps in lutetium aluminum garnet (LuAG). We monitor the afterglow of several Cesup3+/sup (Mgsup2+/sup)-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.
Permanent Link: http://hdl.handle.net/11104/0286270