A powerful reflector in relativistic backward wave oscillator

作者：Cao Yibing^*; Sun Jun; Teng Yan; Zhang Yuchuan; Zhang Lijun; Shi Yanchao; Ye Hu; Chen Changhua

来源：Physics of Plasmas, 2014, 21(9): 093106.

DOI：10.1063/1.4895660

An improved TM021 resonant reflector is put forward. Similarly with most of the slow wave structures used in relativistic backward wave oscillator, the section plane of the proposed reflector is designed to be trapezoidal. Compared with the rectangular TM021 resonant reflector, such a structure can depress RF breakdown more effectively by weakening the localized field convergence and realizing good electrostatic insulation. As shown in the high power microwave (HPM) generation experiments, with almost the same output power obtained by the previous structure, the improved structure can increase the pulse width from 25 ns to over 27 ns and no obvious surface damage is observed even if the generated HPM pulses exceed 1000 shots.

• 出版日期2014-9
• 单位西北核技术研究所