Design considerations and experimental estimation of temperature coefficient of resistance of W-Re heater for high power pulse magnetrons

Jagdish Kumar, Rajendra Kumar Verma, Mahesh Kumar, N. Kanagraj, S. Maurya and V. V. P. Singh

Journal of Electromagnetic Waves and Applications, 2017, vol. 31, issue 15, 1541-1549

Abstract: This paper deals with the design methodology of the heater for an indirectly-heated oxide-coated-cathode of a 3 MW S-Band Pulse Magnetron. The temperature coefficient of resistance of 97%Tungsten – 3%Rhenium (W97-Re3) wire has been experimentally estimated. A value in the range of 3.07 × 10−3 – 3.43 × 10−3 per °C has been estimated over the temperature range of 863–1439 °C. An approach to design the heater has been evolved in order to ensure quality, reliability, and long life of high power magnetrons.

Date: 2017
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DOI: 10.1080/09205071.2017.1353926

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