Luminescence and scintillation properties of Mg-codoped LuAG:Pr single crystals annealed in air

0473747 - FZÚ 2018 RIV NL eng J - Článek v odborném periodiku
Pejchal, Jan - Buryi, Maksym - Babin, Vladimir - Průša, Petr - Beitlerová, Alena - Bárta, Jan - Havlák, Lubomír - Kamada, K. - Yoshikawa, A. - Laguta, Valentyn - Nikl, Martin
Luminescence and scintillation properties of Mg-codoped LuAG:Pr single crystals annealed in air.
Journal of Luminescence. Roč. 181, Jan (2017), s. 277-285. ISSN 0022-2313. E-ISSN 1872-7883
Grant CEP: GA MŠMT LO1409; GA MŠMT LM2015088; GA ČR GJ15-18300Y
GRANT EU: European Commission(XE) 644260 - INTELUM
Institucionální podpora: RVO:68378271
Klíčová slova: scintillation * Pr4+ * luminescence * codoping * lutetium–aluminum garnet
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 2.732, rok: 2017

The influence of the Mg2+ codoping and annealing in the air on the scintillation and luminescence characteristics of Pr-doped lutetium-aluminum garnet crystals (LuAG) was studied to find a possible positive effect of Pr4+. The overall scintillation efficiency under X-ray excitation of the annealed Pr- doped samples decreased with increasing Mg concentration. This was explained by increased overlap of the Pr3+ 5d-4f emission with the charge-transfer (CT) absorption band of the Pr4+ ion stabilized by Mg2+. Unlike for the Ce-doped analogs, promoting the Pr3+ luminescence center to the tetravalent state by divalent ion co-doping and air annealing did not improve scintillation properties of Pr-doped LuAG.
Trvalý link: http://hdl.handle.net/11104/0270888