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Transformation and Formation of Radiation-Induced Point Defects in Irradiated Lithium Fluoride Crystals After Their Mechanical Fragmentation

  • A. P. VoitovichEmail author
  • V. S. Kalinov
  • V. V. Mashko
  • A. N. Novikov
  • L. P. Runets
  • A. P. Stupak
Article
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Changes in the concentrations of ordinary radiation defects and formation of near-cluster radiation defects (color centers) are shown to occur in nanocrystals fabricated by mechanical fragmentation of irradiated LiF crystals. Concentrations of near-cluster color centers increase to a steady value after fragmentation and remain constant at room temperature for a long time. UV irradiation of fabricated nanocrystals after termination of center formation processes in them causes the concentration of near-cluster defects containing three anion vacancies and two electrons to increase significantly. It is demonstrated that there are single-vacancy color centers as well as ordinary and near-cluster aggregate centers in unirradiated nanocrystals fabricated by fragmentation of unirradiated crystals.

Keywords

LiF nanocrystals nanoclusters radiation point defects defect transformation photoluminescence 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • A. P. Voitovich
    • 1
    Email author
  • V. S. Kalinov
    • 1
  • V. V. Mashko
    • 1
  • A. N. Novikov
    • 1
  • L. P. Runets
    • 1
  • A. P. Stupak
    • 1
  1. 1.B. I. Stepanov Institute of PhysicsNational Academy of Sciences of BelarusMinskBelarus

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