0518917 - ÚPT 2020 JP eng A - Abstrakt
Fischerová, L. - Pjatkan, R. - Lalinský, Ondřej - Burešová, H.
Organic-based scintillators with improved radiation hardness.
SCINT 2019. 15th International Conference on Scintillating Materials and their Applications. Proceedings. Sendai: Tohoku University, 2019. s. 143.
[SCINT 2019. International Conference on Scintillating Materials and their Applications /15./. 29.09.2019-04.10.2019, Sendai]
Institucionální podpora: RVO:68081731
Klíčová slova: radiation hard scintillator * ZnO:Ga * polystyrene scintillator * polyethylene naphthalate
Obor OECD: Nuclear physics

The work introduces novel plastic-based scintillation materials with improved radiation
hardness. Materials such as polyethylene naphthalate (PEN), mixtures of polystyrene (PS) with different high Stokes-shift materials (coumarin 30, quinine, 8-Anilino-1-naphthalenesulfonic acid) or composite scintillators containing ZnO:Ga scintillation powder dispersed in PS matrix were used for this study. The effect of additives such as antioxidants (riboflavin), thermostabilizers
(phosphines) and fluorescent brighteners into PS matrix was studied as well as the
synergic effect of PS to light yield of ZnO:Ga scintillation powder. The radiation hardness was compared to reference sample made by p-terphenyl and POPOP in polystyrene which is commercially used plastic scintillation material. The radiation hardness was determined by changes of light yield under electron beam of different energies using FEI MAGELLAN 400 electron microscope.
Trvalý link: http://hdl.handle.net/11104/0303925