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Russian Physics Journal

, Volume 43, Issue 3, pp 205–210 | Cite as

Slow components of the emission decay in fluoride crystals doped with Ce3+

  • E. A. Radzhabov
  • A. I. Nepomnyashchikh
Article

Abstract

Spatially separated defects created by photons with energies 6–8 eV in alkali-earth fluoride crystals doped with cerium are investigated with the help of thermoluminescence. Measuring the spectra of creation of Vk and H peaks of thermostimulated luminescence inBaF 2:Ce3+. we demonstrate that photons with energies higher than 6eV induce H centers (self-trapped holes captured by interstitialF ions), whereas the formation of self-trapped holes begins on exposure to photons with energies greater than 7 eV. The influence of photoionization on theCe 3+ luminescence inBaF 2, SrF2, CaF2, andCeF 3 crystals is investigated in the range of photon energies 4–8 eV. An exponentialCe 3+-emisson decay was observed for excitation energy lying in the range 4–6 eV. Slow and fast decay components were observed under excitation by photons with energies higher than 6 eV. We believe that the slow and fast components are due to the tunnel recombination of trapped electrons with hole centers.

Keywords

Cerium CaF2 Slow Component BaF2 LaF3 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic/Plenum Publishers 2000

Authors and Affiliations

  • E. A. Radzhabov
  • A. I. Nepomnyashchikh

There are no affiliations available

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