A high-efficiency overmoded klystron-like relativistic backward wave oscillator with low guiding magnetic field

Journal Article · Sat Sep 15 00:00:00 EDT 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4751252· OSTI ID:22086155

Renzhen, Xiao; Weibing, Tan; Xiaoze, Li; Zhimin, Song; Jun, Sun; Changhua, Chen ^[1]

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1. National Key Laboratory of Science and Technology on High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an 710024 (China)

A klystron-like relativistic backward wave oscillator with a ratio of transverse dimension to free-space wavelength being about four is presented. In the beam-wave interaction region, the electron beam interacts with surface wave and volume wave simultaneously. The cathode holder plays an important role in the reflection of backward waves. A guard electrode, an electron collector ring, and a reflection ring are used to optimize the beam-wave interaction. The particle in cell simulation results reveal that microwaves with a power of 2 GW and a frequency of 12.3 GHz are generated with an efficiency of 42% when the diode voltage is 400 kV, the beam current 12 kA, and the magnetic field 0.48 T.

• OSTI ID: 22086155
• Journal Information: Physics of Plasmas, Vol. 19, Issue 9; 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
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BEAM CURRENTS
BEAM-PLASMA SYSTEMS
CATHODES
EFFICIENCY
ELECTRIC POTENTIAL
ELECTRON BEAMS
ELECTRONS
GHZ RANGE
INTERACTIONS
KLYSTRONS
MAGNETIC FIELDS
MICROWAVE RADIATION
OSCILLATORS
PLASMA SIMULATION
REFLECTION
RELATIVISTIC RANGE
WAVE PROPAGATION
WAVELENGTHS