Growth and Hardening of Alkali Halides for Use in Infrared Laser Windows

Abstract

Several KCl crystals have been pulled from melts of reagent grade KCl, RAP treated reagent grade KCl, and HCl/Cl2 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 HVl/Cl2 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.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 20, 1974
Accession Number
AD0783328

Entities

People

  • Charles T. Butler
  • Joel J. Martin
  • John R. Hopkins
  • William A. Sibley

Organizations

  • Oklahoma State University–Stillwater

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Color Centers
  • Crystal Structure
  • Crystals
  • Engineering
  • Grain Boundaries
  • Hardening
  • Infrared Lasers
  • Ionizing Radiation
  • Materials
  • Materials Science
  • Optical Absorption
  • Radiation
  • Radiation Hardening
  • Single Crystals
  • Stresses
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Metallurgy
  • Nuclear and Radiation Engineering.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers