Radiation-stimulated changes of structure and mechanical strength of KDP and DKDP crystals

Vitaly I. Salo; L. V. Atroschenko; Marina I. Kolybayeva; E. V. Scherbina

doi:10.1117/12.344377

7 April 1999 Radiation-stimulated changes of structure and mechanical strength of KDP and DKDP crystals

Vitaly I. Salo, L. V. Atroschenko, Marina I. Kolybayeva, E. V. Scherbina

Proceedings Volume 3578, Laser-Induced Damage in Optical Materials: 1998; (1999) https://doi.org/10.1117/12.344377
Event: Laser-Induced Damage in Optical Materials: 1998, 1998, Boulder, CO, United States

Abstract

Under the effect of ionizing radiation on KDP and DKDP crystals radiation-stimulated defects are formed in them. It was found that crystals with a higher content of cationic impurities are noticeably strengthened under the effect of electron radiation, while in purer, free of dislocations crystal microhardness does not increase. The rise of the microhardness value was found to begin at the same dose as the yellow coloration appears, with this, the input to the radiation surface is colored more intensively than the output one. The radiation strengthening of crystals is supposed to be connected with the formation of aggregations of crystal lattice defects arising under the effect of ionizing radiation. The depth of electrons' penetration calculated theoretically is commensurable with that of radiation-stimulated changes in structure and mechanical strength of crystals. It was shown that in the process of action of electrons and protons there takes place a decoration of microstructure defects that were present in crystals before irradiation.

Citation Download Citation

Vitaly I. Salo, L. V. Atroschenko, Marina I. Kolybayeva, and E. V. Scherbina "Radiation-stimulated changes of structure and mechanical strength of KDP and DKDP crystals", Proc. SPIE 3578, Laser-Induced Damage in Optical Materials: 1998, (7 April 1999); https://doi.org/10.1117/12.344377

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