Jin Zhenxing, Zhang Jun, Yang Jianhua, Zhong Huihuang, Qian Baoliang, Shu Ting, Zhang Jiande, Zhou Shengyue, Xu Liurong
College of Opotoelectric Science and Engineering, National University of Defence Technology, Changsha, Hunan, People's Republic of China.
Rev Sci Instrum. 2011 Aug;82(8):084704. doi: 10.1063/1.3622520.
This paper presents both numerical and experimental studies of a repetitive S-band long-pulse relativistic backward-wave oscillator. The dispersion relation curve of the main slow-wave structure is given by the numerical calculation. Experimental results show that a 1 GW microwaves with pulse duration of about 100 ns (full width of half magnitude) under 10 Hz repetitive operation mode are obtained. The microwave frequency is 3.6 GHz with the dominant mode of TM(01), and power conversion efficiency is about 20%. The single pulse energy is about 100 J. The experimental results are in good agreement with the simulation ones. By analyzing the experimental phenomenon, we obtain the conclusion that the explosive emission on the surface of the electrodynamics structure in intense radio frequency field mainly leads to the earlier unexpected termination of microwave output.
本文介绍了一种重复频率S波段长脉冲相对论返波振荡器的数值和实验研究。通过数值计算给出了主慢波结构的色散关系曲线。实验结果表明，在10Hz重复运行模式下，获得了脉宽约100ns（半高宽）、功率为1GW的微波。微波频率为3.6GHz，主导模式为TM(01)，功率转换效率约为20%。单脉冲能量约为100J。实验结果与模拟结果吻合良好。通过对实验现象的分析，我们得出结论：强射频场中电动力学结构表面的爆炸发射主要导致微波输出过早意外终止。
