The Effect of Radiation “Memory” in Alkali-Halide Crystals

M. V. Korovkin, V. N. Sal’nikov

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The exposure of the alkali-halide crystals to ionizing radiation leads to the destruction of their structure, the emergence of radiation defects, and the formation of the electron and hole color centers. Destruction of the color centers upon heating is accompanied by the crystal bleaching, luminescence, and radio-frequency electromagnetic emission (REME). After complete thermal bleaching of the crystal, radiation defects are not completely annealed, as the electrons and holes released from the color centers by heating leave charged and locally uncompensated defects. Clusters of these “pre centers” lead to electric microheterogeneity of the crystal, the formation of a quasi-electret state, and the emergence of micro-discharges accompanied by radio emission. The generation of REME associated with residual defectiveness, is a manifestation of the effect of radiation “memory” in dielectrics.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalRussian Physics Journal
DOIs
Publication statusAccepted/In press - 11 Jan 2017

Keywords

  • alkali-halide crystals
  • radiation defects
  • radiofrequency electromagnetic emission

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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