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Title: A direct density modulation cathode in magnetron

A direct Density Modulation Cathode (DMC) in magnetron is proposed in this paper. By removing the velocity modulation process, electron spokes corresponding to the dominant operating mode can be quickly formed when the DMC is used. Based on theoretical analysis, particle-in-cell simulations and experimental investigations are carried out for demonstration. The final results show that compared with conventional solid cathode and transparent cathode, the DMC can increase 68% and even 146% of relative microwave widths, respectively.
Authors:
; ; ; ;  [1]
  1. College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073 (China)
Publication Date:
OSTI Identifier:
22220629
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 9; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CATHODES; ELECTRONS; MAGNETRONS; MICROWAVE RADIATION; PLASMA SIMULATION