skip to main content

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

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.
Authors:
; ; ;  [1] ; ;  [2] ;  [3] ;  [4] ;  [5]
  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)
Publication Date:
OSTI Identifier:
22314704
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BARIUM FLUORIDES; COMPARATIVE EVALUATIONS; EXCITATION; LUMINESCENCE; NANOPARTICLES; POLYSTYRENE; QUENCHING; TRAPPING; X RADIATION