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Experimental Evaluation of the Temperature Dependence of the Absorption of Metal Oxide Powders Heated by a 527-GHz Gyrotron Radiation

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Abstract

In this paper, the temperature dependence of the absorption index of Al2O3, ZnO, and TiO2 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°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.

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Funding

This paper was supported by the Russian Science Foundation, project no. 18-79-10194.

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Authors and Affiliations

  1. Institute of Applied Physics, Russian Academy of Sciences, 603950, Nizhny Novgorod, Russia

    A. I. Tsvetkov, D. A. Mansfeld, A. V. Vodopyanov & A. S. Sedov

  2. Volga State University of Water Transport, 603950, Nizhny Novgorod, Russia

    A. I. Tsvetkov

Authors
  1. A. I. Tsvetkov
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  2. D. A. Mansfeld
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  3. A. V. Vodopyanov
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  4. A. S. Sedov
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Correspondence to A. I. Tsvetkov.

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The authors declare that they have no conflicts of interest.

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Translated by N. Semenova

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Tsvetkov, A.I., Mansfeld, D.A., Vodopyanov, A.V. et al. Experimental Evaluation of the Temperature Dependence of the Absorption of Metal Oxide Powders Heated by a 527-GHz Gyrotron Radiation. Tech. Phys. Lett. 47, 827–829 (2021). https://doi.org/10.1134/S1063785021080277

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  • DOI: https://doi.org/10.1134/S1063785021080277

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