Chen Zai-Gao, Wang Jian-Guo, Wang Yue, Zhu Xiang-Qin, Zhang Dian-Hui, Qiao Hai-Liang. Numerical simulation of generation and radiation of super-radiation from relativistic backward wave oscillatorsJ. Acta Physica Sinica, 2014, 63(3): 038402. DOI: 10.7498/aps.63.038402