1. The luminescence of BaF2 nanoparticles upon high-energy excitation.
- Author
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Vistovskyy, V. V., Zhyshkovych, A. V., Halyatkin, O. O., Mitina, N. E., Zaichenko, A. S., Rodnyi, P. A., Vasil'ev, A. N., Gektin, A. V., and Voloshinovskii, A. S.
- Subjects
LUMINESCENCE ,BARIUM fluoride ,NANOPARTICLES ,X-rays ,ELECTRONS ,POLYSTYRENE ,SCINTILLATORS - Abstract
The dependence of X-ray excited luminescence intensity on BaF
2 nanoparticle size was studied. A sharp decrease of self-trapped exciton luminescence intensity was observed when the nanoparticle size is less than 80 nm. The main mechanism of the luminescence quenching is caused by the escape of electrons from the nanoparticles. Escape of electrons from nanoparticles is confirmed by the considerable increase of luminescence intensity of the polystyrene scintillator with embedded BaF2 nanoparticles comparing with pure polystyrene scintillator. [ABSTRACT FROM AUTHOR]- Published
- 2014
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