Dresden 2006 – wissenschaftliches Programm
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DS: Dünne Schichten
DS 19: Thin film deposition and process characterization I
DS 19.5: Vortrag
Donnerstag, 30. März 2006, 12:30–12:45, GER 38
Thin film combined systems for detection of ionizing radiation — •Sergiy Nedilko1, Volodymyr Degoda1, Borys Okhrimenko1, Igor Zakharchenko1, Yuriy Zorenko2, and Georgiy Malashkevich3 — 1Kyiv National Taras Shevchenko University, 2, block 1, acad. Hlushkov Ave., 03680, Kyiv, Ukraine — 2Ivan Franko National University of Lviv, 8, Kyryla & Mefodiya Str., Lviv, Ukraine — 3Institute of Molecular and Atomic Physics of BAS, 68, F. Skarini Ave., Minsk, Belarus
Two oxide systems doped with cerium ions are developed for registration of partial components of mixed ionizing flows. The first are detectors based on the grown by liquid phase epitaxy YAG and LuAG films co-doped with Ce and Sc, Tb and Eu ions. Mentioned oxides and their structural types have to allow a possibility of wide modification of both the single-crystalline films and substrates compositions for optimization of detectors parameters. Some oxide sol-gel thin films co-doped with Ce and Ag are the seconds systems. In this case increasing intensity of Ce luminescence resulted by interaction between Ce ions and silver nanoparticles. We assume the data are explained by the overlapping of the Ce ions spectral bands with absorption bands of surface plasmons in silver nanoparticles. The luminescence intensity depends on the preparation procedure, redox conditions of heat-treatment as well as on the dopants concentrations. Experiments with of synchrotron radiation use were done at SUPERLUMI, HASYLAB, Germany. This work is supported by STCU Project No 2042.