A5056594624- Luminescence Properties of Advanced Materials
- Inorganic Fluorides and Related Compounds
- Radiation Detection and Scintillator Technologies
- Advanced Chemical Physics Studies
- Solid State Laser Technologies
- Solid-state spectroscopy and crystallography
- Advanced Materials and Semiconductor Technologies
- Optical properties and cooling technologies in crystalline materials
- Perovskite Materials and Applications
- Radiation Shielding Materials Analysis
- Luminescence and Fluorescent Materials
- Scientific Measurement and Uncertainty Evaluation
- Sensor Technology and Measurement Systems
- Advanced Electrical Measurement Techniques
- Glass properties and applications
- Atomic and Subatomic Physics Research
- Thermal and Kinetic Analysis
- Nuclear Physics and Applications
- Atmospheric Ozone and Climate
Lviv University
2012-2020
Deutsches Elektronen-Synchrotron DESY
2013
Institute for Scintillation Materials
2013
Peter the Great St. Petersburg Polytechnic University
2013
Lviv Polytechnic National University
2013
Lomonosov Moscow State University
2013
The dependence of X-ray excited luminescence intensity on BaF2 nanoparticle size was studied. A sharp decrease self-trapped exciton observed when the is less than 80 nm. main mechanism quenching caused by escape electrons from nanoparticles. Escape nanoparticles confirmed considerable increase polystyrene scintillator with embedded comparing pure scintillator.
The luminescence properties of CaF2 nanoparticles with various sizes (20–140 nm) are studied upon the excitation by VUV and x-ray quanta in order to reveal influence ratio mean free path thermalization length charge carriers nanoparticle size on self-trapped exciton luminescence. intensity for exciting quantum energies corresponding optical creation range electronic multiplication is not so sensitive as energy Eg < hν 2Eg. dependences at discussed terms electron-phonon...
The influence of the BaF2 nanoparticle size on intensity self-trapped exciton luminescence and radiative core-valence transitions is studied by spectroscopy methods using synchrotron radiation. decrease emission at energies exciting photons in range optical creation (hν ≤ Eg) less sensitive to reduction sizes than case band-to-band excitation, where excitons are formed recombination way. shows considerably weaker dependence comparison with luminescence. revealed regularities explained...
CaF 2 :Eu 2+ DQGCaF 3+ QDQRSDUWLFOHVDWKLJK HQHUJ\H
ABSTRACT According to the spectra of stationary X-ray excited luminescence (XEL) BaF2: Eu nanophosphors at 80 and 294 K, it was revealed that thermal annealing fine-grained nanoparticles (d = 35 nm) in range 400–1000°C, which is accompanied by an increase their sizes 58–120 nm, does not result effective changes charge state Eu3 + → Eu2 activator, contrast CaF2: nanoparticles. The maximum light output 590 nm emission band Eu3+ ion observed temperature 600°C with average size 67 nm. subsequent...
Film polymer composite scintillators based on scintillation polystyrene with n-terphenyl and POPOP activators loaded LaF3 nanoparticles have been developed for the registration of ionizing radiation.LaF3 were obtained through precipitation involving ion substitution from LaCl3 water water-alcohol solution addition NH4F solution.The spectral kinetic properties nanocomposites under X-ray irradiation studied.It was found that eciency radiation detection a non-luminescence increases by an order...