Variation of 5d-level position and emission properties of BaF2:Pr crystals
نویسندگان
چکیده
P. A. Rodnyi,1 G. B. Stryganyuk,2 C. W. E. van Eijk,3,* and A. S. Voloshinovskii4 1St. Petersburg State Polytechnical University, Polytekhnicheskaya 29, 195251 St. Petersburg, Russian Federation 2HASYLAB at DESY, Notkestr. 85, 22607 Hamburg, Germany 3Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands 4Ivan Franko National University of Lviv, Kirilo i Mefodii 8, 290005 Lviv, Ukraine Received 19 May 2005; published 23 November 2005
منابع مشابه
Time-resolved spectroscopy of 5d-4f transitions in Pr doped alkali-earth fluorides
We measured time-resolved spectra and emission decay times under pulsed X-ray and synchrotron excitation in alkali-earth fluorides doped with Pr ions. Two fast decay components were found in the emission spectra of BaF2-Pr 3+ and SrF2-Pr 3+ . These were 4 ns and 21 ns in BaF2-Pr 3+ and 8 and 24 ns in SrF2-Pr . The intensity of the faster components 4 ns and 8 ns depended on concentration of Pr....
متن کاملSCINTILLATION PROPERTIES OF BaF2:Cd, BaF2, BaF2:Ce, BaF2:Sc, BaF2:Tm CRYSTALS AND CERAMICS; NEW PHOTOSENSORS FOR THE VACUUM ULTRAVIOLET REGION
Research and development of new scintillation materials is mainly triggered by the growing needs of modern medical imaging, high energy and nuclear physics. Pure BaF2 crystals are widely applied as scintillation material because of its high density, high radiation resistance and good time resolution due to the fast component (< 1 ns) appearing in the emission bands around 220 and 195 nm. This f...
متن کاملOn quality requirements to the barium fluoride crystals
This report summarizes the quality requirements to the barium fluoride (BaF 2 ) crystals for constructing a high precision electromagnetic calorimeter at future hadron colliders . The basic property of BaF2 crystals and the design and performance of a BaF2 calorimeter are presented . The emphasis of the discussion is in the radiation resistance of the current production BaF2 crystals. An approa...
متن کاملLuminescence Properties of Oxyfluoride Glass and Glass Ceramic Doped with Y3 + Ions
Oxyfluoride glass ceramics containing CaF2nano-crystals doped with Y3+ ions were prepared by one-step crystallization of SiO2- Al2O3- CaO- CaF2 glasses at different temperatures. X- ray diffraction (XRD) results have revealed that CaF2 was the only precipitated crystalline phase in glass ceramic samples. According to the XRD results, a glass ceramic was selected as the best sample in order to ...
متن کاملSpectroscopic properties and energy transfer parameters of Er3+- doped fluorozirconate and oxyfluoroaluminate glasses
Er3+-doped fluorozirconate (ZrF4-BaF2-YF3-AlF3) and oxyfluoroaluminate glasses are successfully prepared here. These glasses exhibit significant superiority compared with traditional fluorozirconate glass (ZrF4-BaF2-LaF3-AlF3-NaF) because of their higher temperature of glass transition and better resistance to water corrosion. Judd-Ofelt (J-O) intensity parameters are evaluated and used to comp...
متن کامل