Wang Hong-Guang, Liu Peng-Fei, Zhang Jian-Wei, Li Yong-Dong, Cao Yi-Bing, Sun Jun. Particle-in-cell simulation on effect of collector outgassing on relativistic backward oscillatorJ. Acta Physica Sinica, 2019, 68(18): 185203. DOI: 10.7498/aps.68.20190554