3Kitsanov S A, Klimov A I, Korovin S D, et al. S-band vircator with electron beam premodulation based on compact pulse driver with inductive energy storage[J]. IEEE Transactions on Plasma Science, 2002, 30(3):1179-1185.
4Jiang W H, Woolverton K, Dickens J, et al. High power microwave generation by a coaxial virtual cathode oseillator[J]. IEEE Transactions on Plasma Science, 1999, 27(5) : 1538-1542.