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Experimental evaluation of the temperature dependence of the absorption of metal oxide powders heated by a 527-GHz gyrotron radiation
A. I. Tsvetkovab, D. A. Mansfelda, A. V. Vodopyanova, A. S. Sedova a Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod
b Volga State University of Water Transport, Nizhnii Novgorod
Abstract:
In this paper, the temperature dependence of the absorption index of Al$_2$O$_3$, ZnO, and TiO$_2$ powders at a frequency of 527 GHz was studied. A continuous-wave gyrotron with an output power up to 240 W was used as a microwave power source for heating the samples. The power absorbed by the samples was measured in the temperature range from 300 to 1000$^\circ$C. A significant increase (by four to six times) in the absorption index was observed as compared with the experiments at a frequency of 263 GHz.
Keywords:
metal oxide powders, absorption, gyrotron.
Received: 05.04.2021 Revised: 07.05.2021 Accepted: 11.05.2021
Citation:
A. I. Tsvetkov, D. A. Mansfeld, A. V. Vodopyanov, A. S. Sedov, “Experimental evaluation of the temperature dependence of the absorption of metal oxide powders heated by a 527-GHz gyrotron radiation”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 47:16 (2021), 36–38; Tech. Phys. Lett., 47:11 (2021), 827–829
Linking options:
https://www.mathnet.ru/eng/pjtf4709 https://www.mathnet.ru/eng/pjtf/v47/i16/p36
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