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Title: Experimental Study on Axial Dependence of Anode Current Distribution in an Oven Magnetron
Authors: Mitani, Tomohiko  kyouindb  KAKEN_id
Shinohara, Naoki  kyouindb  KAKEN_id
Matsumoto, Hiroshi  kyouindb  KAKEN_id
Aiga, Masayuki
Kuwahara, Nagisa
Ishii, Takeshi
Author's alias: 三谷, 友彦
Keywords: Cathodes
Issue Date: May-2010
Publisher: IEEE
Journal title: IEEE Transactions on Electron Devices
Volume: 57
Issue: 5
Start page: 1167
End page: 1172
Abstract: The axial dependence of the anode current distribution in a 2.45-GHz oven magnetron was investigated. We previously demonstrated that installing a cathode shield is an effective way to reduce magnetron noise. The objective of the present study is to determine why installing a cathode shield reduces the noise. We measured the anode current of a test magnetron with an axially segmented anode block. When no magnetic field was applied, the test magnetron behaved like a cylindrical vacuum diode, and the axial electron distribution corresponded to the axial distribution of the cathode temperature. When a magnetic field was applied, the cathode shield increased the normalized anode current in the central region, which contributes to noise reduction.
Rights: (c) 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
DOI(Published Version): 10.1109/TED.2010.2043385
Appears in Collections:Journal Articles

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