A Ka-band radial relativistic backward wave oscillator with GW-class output power

作者：Zhu, Jiaxin; Zhang, Xiaoping^*; Dang, Fangchao

来源：Physics of Plasmas, 2016, 23(7): 073111.

DOI：10.1063/1.4958316

A novel radial relativistic backward wave oscillator with a reflector is proposed and designed to generate GW-level high power microwaves at Ka-band. The segmented radial slow wave structure and the reflector are matched to enhance interaction efficiency. We choose the volume wave TM01 mode as the working mode due to the volume wave characteristic. The main structural parameters of the novel device are optimized by particle-in-cell simulation. High power microwaves with power of 2GW and a frequency of 29.4 GHz are generated with 30% efficiency when the electron beam voltage is 383 kV, the beam current is 17 kA, and the guiding magnetic field is only 0.6 T. Simultaneously, the highest electric field in the novel Ka-band device is just about 960 kV/cm in second slow wave structure. Published by AIP Publishing.

• 出版日期2016-7
• 单位中国人民解放军国防科学技术大学