The luminescence of BaF{sub 2} nanoparticles upon high-energy excitation

Journal Article · Thu Aug 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4892112· OSTI ID:22314704

Zhyshkovych, A. V.; Halyatkin, O. O.; Voloshinovskii, A. S. ^[1]; Mitina, N. E.; Zaichenko, A. S. ^[2]; Rodnyi, P. A. ^[3]; Vasil'ev, A. N. ^[4]; Gektin, A. V. ^[5]

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1. Ivan Franko National University of Lviv, 8a Kyryla i Mefodiya St., 79005 Lviv (Ukraine)
2. Lviv Polytechnic National University, 12 S. Bandera St., 79013 Lviv (Ukraine)
3. Saint-Petersburg State Polytechnical University, 29, Polytekhnicheskaya, 195251 Saint-Petersburg (Russian Federation)
4. Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow (Russian Federation)
5. Institute for Scintillation Materials, NAS of Ukraine, 60 Lenina Ave, 61001 Kharkiv (Ukraine)

The dependence of X-ray excited luminescence intensity on BaF{sub 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 BaF{sub 2} nanoparticles comparing with pure polystyrene scintillator.

• OSTI ID: 22314704
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BARIUM FLUORIDES
COMPARATIVE EVALUATIONS
EXCITATION
LUMINESCENCE
NANOPARTICLES
POLYSTYRENE
QUENCHING
TRAPPING
X RADIATION