Growth and Hardening of Alkali Halides for Use in Infrared Laser Windows
Annual rept. no. 2
OKLAHOMA STATE UNIV STILLWATER DEPT OF PHYSICS
Pagination or Media Count:
Several KCl crystals have been pulled from melts of reagent grade KCl, RAP treated reagent grade KCl, and HClCl2 treated KCl. The OH- concentrations and the 10.6 micrometers optical absorption of these crystals were evaluated. The results indicate that both the RAP and HVlCl2 treatments effectively remove OH- and lower the 10.6 micrometers absorption. Radiation damage has been investigated as a supplementary mechanism for strengthening KCl- KBr alloys and polycrystalline KCl. The results show that the hardening due to the radiation damage is independent of the other mechanisms present. Hence, the total strength equals the radiation damage in the pure crystal plus the strength caused by either alloying or small grains.
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