[1] Benfd J, Swegle J A, Schamiloglu E. High power microwaes[M]. 3rd ed. London: Tayl & Francis Group, 2015.
[3] Mesyats G A. Cathode phenomena in a vacuum disge: The breakdown, the spark the arc[M]. Moscow: Nauka, 2000.
[5] Krasik Y E, Yarmolich D, Gleizer J Z. Pulsed plasma electron sources[J]. Physics of Plasmas, 16, 7103(2009).