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Spectral optical characteristics of nanoparticles for effective extinction of black body radiation with high temperatures
Journal of Quantitative Spectroscopy and Radiative Transfer ( IF 2.3 ) Pub Date : 2020-05-23 , DOI: 10.1016/j.jqsrt.2020.107067
V.K. Pustovalov , L.G. Astafyeva

Different types of fires and high-temperature technological processes are the sources of intense dangerous optical radiation, which can be modeled by black body radiation. The strongly enhanced extinction and absorption of black body radiation with high temperatures in the range 1000–2000 K in wide spectral interval of 200–6000 nm by nanoparticles are of significant science and technical interest. The investigation and analysis have been conducted of plasmonic characteristics of core-shell nanoparticles for radiation wavelengths in the spectral interval 200–6000 nm and in the range of NP radii ~25–200 nm with the shell thickness 5 nm on the base of computer modeling. These results highlight the possibility of novel core-shell NiO-Ni nanoparticles with the radii of about ~75–175 nm for effective application as attenuators for radiation in the optical spectrum 200–6000 nm from sources with temperatures in the range 1000–2000 K. Fe3O4-Au and SiO2-Au nanoparticles show possibility for extinction of radiation with the temperatures of 1500, 2000 K and less possibility for extinction radiation with 1000 K.



中文翻译:

纳米粒子的光谱光学特性可有效消除高温下的黑体辐射

不同类型的火灾和高温工艺过程是强烈危险的光辐射的源头,可以通过黑体辐射来建模。纳米粒子在200–6000 nm的宽光谱范围内强烈增强了在1000–2000 K范围内高温下的黑体辐射的消光和吸收,具有重大的科学和技术意义。在计算机建模的基础上,对核-壳纳米粒子在光谱间隔200–6000 nm和NP半径〜25–200 nm和壳厚度5 nm范围内的辐射波长进行了研究和分析。 。3 O 4 -Au和SiO 2 -Au纳米粒子在1500、2000 K的温度下具有灭绝辐射的可能性,而在1000 K的条件下具有消灭辐射的可能性较小。

更新日期:2020-05-23
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