. "15"^^ . . "New Yb-containing single scintillator materials"@en . "15"^^ . "Nov\u00E9 monokrystalick\u00E9 scintila\u010Dn\u00ED materi\u00E1ly obsahuj\u00EDc\u00ED ytterbium" . . . "2007-09-26+02:00"^^ . "Charge transfer luminescence of Yb3+ center in oxide hosts was characterized and temperature dependencies of decay times and intensities were modelled. Their potential for fast scintillators was evaluated."@en . "1"^^ . "0"^^ . . "1. Preparation of single crystals of complex (Y3Al5O12, Lu3Al5O12, YAlO3), fluorides (BaY2F8, LiLuF4, LiCaAlF6) and thin layers of Cs3X2Y9 (X=Y,La,Y=Br,I) containing ytterbium. 2. Study of %22charge tranfer transition%22 luminiscence Yb3+ and 5d-4femission of Yb2+ in wide temperature range 4-350 K using methods of time-resolved photoluminiscence and also under the excitation by X-or gamma (22Na) photons. Influence of Yb concentration - effects of the concentration quenching. 3. The role and nature of defects, trapping states an Yb3+ - Yb2+ charge state oscillations in the processes of energy transfer and storage monitored in the correlated measurements of scintillation decay, radioluminiscence, induced absorption, thermoluminiscence and electron paramagnetic resonance. Influence of the preparation technology. 4. Prospectives of the materials under study in scintillator applications and their comparison with wellknown Y3AlO12:Ce, YAlO3:Ce and BaF2scintillators."@en . " Yb doping" . . . " energy transfer processes" . "0"^^ . . "Byly zm\u011B\u0159eny parametry a vypracov\u00E1ny fenomenologick\u00E9 modely luminiscence s p\u0159enosem n\u00E1boje centra Yb3+ v oxidov\u00FDch hostitelsk\u00FDch m\u0159\u00ED\u017E\u00EDch v\u010Detn\u011B proces\u016F koncentra\u010Dn\u00EDho zh\u00E1\u0161en\u00ED luminiscence a vyhodnocen jejich aplika\u010Dn\u00ED potenci\u00E1l pro rychl\u00E9 scntil\u00E1tory."@cs . . "IAA1010305" . . "1. P\u0159\u00EDprava monokrystal\u016F vybran\u00FDch komplexn\u00EDch oxid\u016F (Y3Al5O12, Lu3Al5O12,YAlO3), fluorid\u016F (BaY2F8, LiLuF4, LiCaAlF6) a vrstev Cs3X2Y9 (X=Y,La,Y=Br,I) s p\u0159\u00EDm\u011Bs\u00ED ytterbia. 2. Studium charakteristik %22charge transfer transition%22 luminiscence pro Yb3+ a 5d-4f luminiscence Yb2+ v \u0161irok\u00E9m rozsahu teplot 4-350 K metodami \u010Dasov\u011B rozli\u0161en\u00E9 fotoluminiscence a d\u00E1le p\u0159i excitaci rtg a gamma (22Na) fotony. Vliv koncentrace Yb - efekty koncentra\u010Dn\u00EDho zh\u00E1\u0161en\u00ED. 3. Vliv, v\u00FDznam a podstata bodov\u00FDch efekt\u016F, past\u00ED a zm\u011Bn valence Yb3+v\u011Bt\u0161\u00ED-men\u0161\u00EDYb2+ v procesech p\u0159enosu a z\u00E1chytu energie monitorovan\u00FD korelovan\u00FDmi m\u011B\u0159en\u00EDmi scintila\u010Dn\u00EDho dosvitu, radioluminiscence, indukovan\u00E9 adsorpce, termoluminiscence a elektronov\u00E9 paramagnetick\u00E9 resonance. Korelace a metodami/parametry technologick\u00E9 p\u0159\u00EDpravy. 4. Posouzen\u00ED aplika\u010Dn\u00EDho potenci\u00E1lu t\u011Bchto materi\u00E1l\u016F pro scintila\u010Dn\u00ED detekci rtg a gamma z\u00E1\u0159en\u00ED a jejich srovn\u00E1n\u00ED s Ce-dopovan\u00FDmi Y3Al5O12 a YAlO3 scintil\u00E1tory, p\u0159\u00EDp. s nedopovan\u00FDm BaF2." . " scintillation" . . . . . . " single crystals" . "http://www.isvav.cz/projectDetail.do?rowId=IAA1010305"^^ . . . "luminiscence" . . "luminiscence; scintillation; single crystals; Yb doping; energy transfer processes; defect states"@en . . .