Optical Characteristics of Nanoparticles for Effective Attenuation of Radiation of a Black Body with Temperatures of 2000–4000 K
| Autor: | L. G. Astaf’eva, V. K. Pustovalov |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science business.industry Attenuation Nanoparticle Radiation Laser 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 010309 optics Wavelength law 0103 physical sciences Optoelectronics Optical radiation Photonics business Plasma processing |
| Zdroj: | Optics and Spectroscopy. 128:562-568 |
| ISSN: | 1562-6911 0030-400X |
| DOI: | 10.1134/s0030400x20040165 |
| Popis: | The prospects of using nanoparticles for effective attenuation of optical radiation from various natural and technological sources (fires, electrometallurgy, laser and plasma processing) with emitter surface temperatures of 2000–4000 K are studied via theoretical modeling. The radiation from the above sources can be presented as the emission of a black body with a relevant temperature. The optical characteristics were analyzed for bilayer SiO2–Au- and Fe3O4–Au nanoparticles of a core–shell system with radii of 25–300 nm and shell thicknesses of 5 and 10 nm for radiation wavelengths of 200–5000 nm. SiO2–Au- and Fe3O4–Au nanoparticles are found to be the good radiation attenuators (absorbers) with temperatures of 2000–4000 K at wavelengths of 200–5000 nm and seem to be promising for effective attenuation of optical radiation of high-temperature sources. |
| Databáze: | OpenAIRE |
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