Scintillation properties of YAP:Ce

Energy Transfer, Fluorescence and Scintillation Processes in Cerium-Doped RE3+AlO3Fast Scintillators

“…The emission spectra of the main Ce3+ sites (Ce3+ ions replacing RE3+ lattice ions) are peaking generally at about λn, 360-370 nm but additional less intense emission bands are observed in the visible range, especially for YAP:Ce and GAP:Ce single crystals [3,16]. Fluorescence lifetimes of these visible emission bands are very fast (τ 15-20 ns) if decays are excited in their own excitation bands.…”

“…CeF 3 [8]. From various Ce3 +-doped crystals the most promising ones are orthoaluminates as YΑlO 3 (YAP) [3,9], GdAlO3 (GAP) [10], LuΑlO 3 (LuAP) [11,12] and the mixed ones as e.g. Yx Lu 1-x ΑlO 3 .…”

“…Ce3+-doped RE3 +ΑlO3 orthoaluminnates are new types of crystal scintillators which are characterized by (i) high density (from 6 g/cm 3 to 8.5 g/cm3), (ii) high light yield exceeding that of Bi4 Ge3 O 12 (BGO) which is roughly 9000 photons/MeV [3] and (iii) fast fluorescence and scintillation decays (τ ≈ 10-30 ns) [3,6,11]. If the crystals have these properties together with mechanical and chemical stability then tley can be used in scintillator applications as e.g.…”

“…Recent applications of scintillators in medical imaging of human body (PET scanning, γ-cameras and X-ray tomographies) require improved or even quite new scintillatiug materials [1][2][3][4][5][6][7]. One of the most studied materials are either Ce3+-doped crystals [1,5,6] or Ce 3 +-concentrated ones as e.g.…”

Optical polarized properties of the F2 center in YAlO3 crystal

“…YAP single crystals doped with rare-earth and transition metal ions are prospective materials for laser engineering, scintillators, holographic recording, data storage and substrate materials for thin films of high-temperature superconductors [2][3][4][5]. However, it is well know that defects appearing in solids during crystal growth and under various external stimuli affect the structure and properties of the host material in different ways [6,7], thus restrict the YAP crystal applications for decreased efficiency and afterglow in laser, scintillators, etc.…”