Progress in fabrication of long transparent YAG:Ce and YAG:Ce,Mg single crystalline fibers for HEP applications

0507925 - FZÚ 2020 RIV GB eng J - Článek v odborném periodiku
Sidletskiy, O. - Lebbou, K. - Kofanov, D. - Kononets, V. - Gerasymov, I. - Bouaita, R. - Jarý, Vítězslav - Kučerková, Romana - Nikl, Martin - Polesel, A. - Pauwels, K. - Auffray, E.
Progress in fabrication of long transparent YAG:Ce and YAG:Ce,Mg single crystalline fibers for HEP applications.
CrystEngComm. Roč. 21, č. 11 (2019), s. 1728-1733. ISSN 1466-8033
GRANT EU: European Commission(XE) 644260 - INTELUM
Grant ostatní: AV ČR(CZ) NAS-17-04
Program: Bilaterální spolupráce
Institucionální podpora: RVO:68378271
Klíčová slova: YAG:Ce * YAG:Ce,Mg * fibers grown * micro-pulling-down method
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 3.117, rok: 2019
Způsob publikování: Omezený přístup
https://doi.org/10.1039/c8ce01781f

A significant enhancement in the light attenuation length in 22 cm long YAG:Ce and YAG:Ce,Mg fibers grown by the micro-pulling-down method has been reported. This progress has been achieved by the introduction of Al excess into the melt, optimization of thermal conditions of crystallization and post growth annealing. Attenuation length clearly correlates with surface roughness of the fibers. Al excess addition over the stoichiometric composition enhances the fiber surface smoothness. An increase in axial thermal gradient and melt pressure in the crucible capillary die improves the crystallization process stability. Mg codoping provides a Ce3+ scintillation decay time decrease down to 80 ns.
Trvalý link: http://hdl.handle.net/11104/0298889