Effects of thermal treatment on the infrared transmission of polycrystalline silver halide fibers
| Autor: | D. Bunimovich, Abraham Katzir, Shaul Shalem |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Materials science
Silver halide Scattering business.industry Infrared Materials Science (miscellaneous) Analytical chemistry Infrared spectroscopy Recrystallization (metallurgy) Thermal treatment Industrial and Manufacturing Engineering Condensed Matter::Materials Science chemistry.chemical_compound symbols.namesake Optics chemistry symbols Crystallite Business and International Management Rayleigh scattering business |
| Zdroj: | Applied optics. 36(1) |
| ISSN: | 1559-128X |
| Popis: | Polycrystalline silver halide fibers were thermally treated by a variety of heating and quenching procedures. For each procedure, the recrystallization process and the grain-size distribution were investigated. The absorption and scattering coefficients at 10.6 mum and the infrared transmittance spectra in the 3-20 mum wavelength range were also measured. Treatment at temperatures above 170 degrees C and long time intervals generally lead to an increase in grain size, with a dependent increase in absorption and scattering coefficients at 10.6 mum. Heating only to temperatures below 170 degrees C reduced the absorptive and scattering losses. The Rayleigh-Gans scattering model was utilized to describe the scattering behavior. A model involving cation vacancies localized at charged dislocations or casual divalent impurities is suggested to explain the infrared absorption of the fibers. |
| Databáze: | OpenAIRE |
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