@article{b82fb401aa334b53872e164e3e27da24,
title = "Luminescence and decay kinetics of Pb2+ center in LiCaAlF6 single crystal host",
abstract = "The Pb-doped LiCaAlF6 single crystals were grown using the micro-pulling-down method. The temperature dependences of photoluminescence characteristics were studied to reveal the kinetic processes in the excited state of Pb2+ luminescence center. A simple three-level phenomenological model applied to the decay time temperature dependences shows that energy separation between the metastable 3P0 and the radiative 3P1 states of Pb2+ center is relatively high, about 180 meV (∼1470 cm-1). Induced absorption spectrum after UV illumination at 500 K points to slight ionization of the Pb2+ excited state and creation of the color F-center with an absorption peak located around 260 nm.",
keywords = "Doping, Micro-pulling-down, Neutron detectors, Scintillator materials",
author = "Jan Pejchal and Eva Mihokova and Martin Nikl and Andrey Novoselov and Akira Yoshikawa",
note = "Funding Information: This work was partially supported by the Ministry of Education, Culture, Sports, Science, and Technology of Japan, Grant-in-Aid for Young Scientists (A), 19686001, 2007, as well as the Granti-in-Aid of the Ministry of Health, Labour and Welfare of Japan. Financial support of Japan Society for the Promotion of Science (JSPS) Bilateral Joint Projects (Japan and Czech Republic) is also greatly appreciated. Financial support of Czech MSMT projects ME953 and 1M06002 and the JSPS Postdoctoral Fellowship for Foreign Researchers Program P08055 is also gratefully acknowledged.",
year = "2009",
month = sep,
doi = "10.1016/j.optmat.2009.04.005",
language = "English",
volume = "31",
pages = "1673--1677",
journal = "Optical Materials",
issn = "0925-3467",
publisher = "Elsevier",
number = "11",
}