Russian Physics Journal

, Volume 43, Issue 3, pp 211–214 | Cite as

Mechanisms of creation and destruction of polyhalide V centers in irradiated AHC

  • D. M. Salikhodzhaev
  • A. T. Akylbekov
  • K. S. Kaktybekov
  • T. N. Nurakhmedov


The mechanisms of creation and destruction of polyhalide V centers in AHC were modeled by the MNDO semiempirical quantum-chemical method. It is shown that X 3 molecules dissociate from the ground state into X 2 0 and X and from the triplet state into X 2 and X0, whereas X 5 and X 7 molecules dissociate into X 3 and X 2 0 and X 5 and X 2 0 , respectively. At room temperatures, X 3 or larger aggregates, which consist only of X 3 centers, form stable polyhalide V centers. It is shown that the thermal stability decreases when going along the series X 3 , X 5 , and X 7 . The radiation-induced instability of stable F centers in AHC at room temperatures is associated with the destruction of X 3 centers and the thermal instability of X 5 and X 7 centers.


Triplet State Dissociation Energy Versus Center Stable Defect Prolonged Irradiation 
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Copyright information

© Kluwer Academic/Plenum Publishers 2000

Authors and Affiliations

  • D. M. Salikhodzhaev
  • A. T. Akylbekov
  • K. S. Kaktybekov
  • T. N. Nurakhmedov

There are no affiliations available

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