Experimental demonstration of a compact high efficient relativistic magnetron with directly axial radiation

Journal Article · Sun Jan 15 00:00:00 EST 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3677882· OSTI ID:22043598

Wei, Li; Yonggui, Liu; Ting, Shu; Hanwu, Yang; Yuwei, Fan; Chengwei, Yuan; Jun, Zhang ^[1]

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1. College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073 (China)

A compact relativistic magnetron with axial microwave radiation is experimentally investigated. Under the modified magnetic field distribution, only connecting a special horn antenna in the axial direction, the relativistic magnetron can stably radiate high power and high efficiency microwaves. The total length of the device is {approx}0.3 m, and the volume is {approx}0.014m{sup 3}. In such working condition that the applied voltage is 539 kV and the magnetic field is {approx}0.38 T, the output microwave power is {approx}1.24 GW. Correspondingly, the total efficiency is about 34.1%. The radiating frequency is 2.35GHz, which is in agreement with the {pi} mode frequency of the theoretical expectation.

• OSTI ID: 22043598
• Journal Information: Physics of Plasmas, Vol. 19, Issue 1; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DISTRIBUTION
EFFICIENCY
MAGNETIC FIELDS
MAGNETRONS
MICROWAVE RADIATION
PLASMA DIAGNOSTICS
PLASMA INSTABILITY
RELATIVISTIC PLASMA
RELATIVISTIC RANGE