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Zhurnal Tekhnicheskoi Fiziki, 2023 Volume 93, Issue 10, Pages 1434–1439 (Mi jtf7108)

Solids

Normal spectral emissivity of elements of the XI group of the periodic system

D. V. Kosenkov, V. V. Sagadeev

Kazan National Research Technological University, Kazan, Russia

Abstract: An experimental study of the normal spectral emissivity $\varepsilon_{\lambda n}$ of chemically pure copper, gold and silver in the solid polished and liquid phases of the state, near the melting point of the metal, was carried out. The measurement of $\varepsilon_{\lambda n}$ was carried out using fixed passbands of narrowband filters. The dependence of the metal $\varepsilon_{\lambda n}$ on the wavelength in the range of the radiation spectrum of 0.26–4.2 $\mu$m microns is obtained. A comparative analysis with the literary data of other authors is carried out. The results of the calculation of $\varepsilon_{\lambda n}$ in the claimed experimental wave range according to the classical electromagnetic theory are presented.

Keywords: normal spectral emissivity, wavelength, solid polished phase, liquid phase, melting point region, copper, gold, silver.

Received: 12.03.2023
Revised: 21.07.2023
Accepted: 22.08.2023

DOI: 10.61011/JTF.2023.10.56281.42-23



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