Luminescence mechanism in doubly Gd, Nd-codoped fluoride crystals for VUV scintillators

0470914 - FZÚ 2017 RIV NL eng J - Journal Article
Pejchal, Jan - Fukuda, K. - Babin, Vladimir - Kurosawa, S. - Yokota, Y. - Yoshikawa, A. - Nikl, Martin
Luminescence mechanism in doubly Gd, Nd-codoped fluoride crystals for VUV scintillators.
Journal of Luminescence. Roč. 169, Jan (2016), s. 682-689. ISSN 0022-2313. E-ISSN 1872-7883.
[International Conference on Luminescence and Optical Spectroscopy of Condensed Matter /17./. Wroclaw, 13.07.2014-18.07.2014]
R&D Projects: GA MŠMT(CZ) LH14266
Institutional support: RVO:68378271
Keywords : barium–lutetium–yttrium fluoride * lutetium fluoride * scintillator * VUV luminescence
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.686, year: 2016

The Nd-doped, Gd-doped and doubly Nd, Gd-codoped BaLu1.2Y0.8F8 (BaLuYF) and LuF3 single crystals were grown by a micro-pulling-down method. Their photoluminescence, radioluminescence and alpha-ray-excited pulse-height spectra were studied in the vacuum-ultra-violet (VUV) region to confirm their possible application as fast VUV scintillators. Complementary photoluminescence measurements in the ultra-violet/visible spectral region were performed as well. The possibility of scintillation performance improvement by Gd codoping was tested. The positive effect of Gd codoping was confirmed for higher dopant concentrations. Slight improvement of the light yield under alpha-ray excitation due to Gd codoping was confirmed for LuF3:Nd.
Permanent Link: http://hdl.handle.net/11104/0268425