Radioluminescence properties of nanocomposite scintillators with BaF 2 fillers

In this paper, studies of the luminescence properties of nanocrystalline BaF 2 samples synthesized by laser ablation and pulse electron beam evaporation method are presented. The measurements of X-ray excited luminescence (XEL) showed the dependence between luminescence intensity and the shape of the spectrum on the morphology and particle size. Also, studies of X-ray excited luminescence, decay curves and optical transmittance for nanocomposite materials containing BaF 2 nanopowder are presented. Barium fluoride nanopowder, obtained by pulsed electron beam evaporation method is characterized by a lower intensity than the initial microcrystalline powder, but at the same time, XEL spectrum of the nanocomposite material with this nanocrystalline filler is more intense, then that for nanocomposite material with initial powder. © Published under licence by IOP Publishing Ltd

LUMINESCENT PROPERTIES OF BaF2-ADDITIVES FOR COMPOSITE SCINTILLATORS

In this work the influence of different synthesis methods on luminescent properties of nanocrystalline BaF2 synthesized by laser ablation and electron beam method, is studied. Normolized and absolute X-ray excited luminescence (XEL) spectra for all samples are presented. XEL spectra contain two emission bands at 222 nm (cross-luminescence band) and at 300 nm caused by self-trapped exciton. Samples obtained by laser ablation method characterized by most effective luminescence intensity