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

Abstract

A Reactive Atmosphere Process treatment system for KCl starting material has been placed in operation. Crystals grown from the treated material have hydroxyl ion contents of about 0.05 microgram hydroxyl ion per g KCl as compared to 1 microgram hydroxyl ion for untreated crystals. The flow stress of a series of KBr-Cl mixed crystals has been measured as a function of radiation damage. The magnitude of the increase in flow stress is approximately the same as it is in pure KCl or KBr for equivalent amounts of damage. This result shows that the radiation hardening and alloy hardening are additive. Preliminary thermal conductivity studies (internally funded) show that 400 ppm of Sr impurity causes only a small decrease in the room temperature thermal conductivity of KCl.

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Document Details

Document Type
Technical Report
Publication Date
Oct 31, 1973
Accession Number
AD0782468

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
  • Absorption Coefficients
  • Agreements
  • Air Force
  • Color Centers
  • Conductivity
  • Crystal Growth
  • Crystals
  • Electron Microscopes
  • Hardening
  • Impurities
  • Materials
  • Optical Absorption
  • Radiation
  • Radiation Hardening
  • Square Roots
  • Thermal Conductivity

Readers

  • Materials Science and Engineering.
  • Mechanical Engineering/Mechanics of Materials.
  • Toxicology/Environmental Toxicology

Technology Areas

  • Directed Energy