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Particle track phenomena and radiation power effects at the formation of radiation defects in ionic crystals

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Abstract

The mechanisms of the radiation defect formation in alkali halide crystals are studied in an extremely wide range of the absorbed radiation dose rate (101–1012 Gy/s). It is found that the power dependence of color centers accumulation is described by a curve with a maximum at a dose rate of about 1010 Gy/s. The electron and proton track parameters for ionic crystals are calculated in the context of the theory of ionization losses of charged-particle energy. Proceeding from the concept of the charged-particle track overlap, the theoretical relations are obtained that explain the radiation power effect in all dielectric materials including alkali halide crystals. The suppression of color center accumulation in these crystals under high-power electron irradiation is due to a more regular topography of the radiation defect formation.

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Authors and Affiliations

  1. Tomsk Polytechnic University, Russia

    Yu. M. Annenkov

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  1. Yu. M. Annenkov
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 10–21, February, 2007.

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Annenkov, Y.M. Particle track phenomena and radiation power effects at the formation of radiation defects in ionic crystals. Russ Phys J 50, 107–119 (2007). https://doi.org/10.1007/s11182-007-0015-6

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  • DOI: https://doi.org/10.1007/s11182-007-0015-6

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