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Title: Experimental investigations of the TE{sub 11} mode radiation from a relativistic magnetron with diffraction output

Abstract

Directly radiating microwaves at TE{sub 11} mode, a relativistic magnetron with diffraction output (MDO) is experimentally investigated. Two important factors, transition section and working condition, significantly affecting the microwave powers, efficiencies, and pulse durations are analyzed. The experimental results on our designed MDO show that the optimized transition section with the parameters, 46 mm in height and 70 mm in length, is beneficial for producing high power TE{sub 11} mode microwaves. Under the low applied voltage condition (less than 650 kV), the power conversion efficiency will be higher than that obtained from the high applied voltage condition. {approx}24 ns of the microwave duration is a typical value under the voltage duration of 56 ns. Pulse shortens will happen if the applied voltage is higher than 650 kV. When the applied voltage reaches 880 kV, the microwave duration is only just {approx}12 ns. Impendence mismatch between the accelerator and the diode is the chief reason causing the pulse shortens.

Authors:
; ; ; ;  [1]
  1. College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073 (China)
Publication Date:
OSTI Identifier:
22068909
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 19; Journal Issue: 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCELERATORS; DIFFRACTION; EFFICIENCY; ELECTRIC POTENTIAL; EXPERIMENTAL DATA; MAGNETRONS; MICROWAVE RADIATION; PULSES; RELATIVISTIC RANGE

Citation Formats

Li Wei, Liu Yonggui, Zhang Jun, Yang Hanwu, and Qian Baoliang. Experimental investigations of the TE{sub 11} mode radiation from a relativistic magnetron with diffraction output. United States: N. p., 2012. Web. doi:10.1063/1.4767647.
Li Wei, Liu Yonggui, Zhang Jun, Yang Hanwu, & Qian Baoliang. Experimental investigations of the TE{sub 11} mode radiation from a relativistic magnetron with diffraction output. United States. doi:10.1063/1.4767647.
Li Wei, Liu Yonggui, Zhang Jun, Yang Hanwu, and Qian Baoliang. Thu . "Experimental investigations of the TE{sub 11} mode radiation from a relativistic magnetron with diffraction output". United States. doi:10.1063/1.4767647.
@article{osti_22068909,
title = {Experimental investigations of the TE{sub 11} mode radiation from a relativistic magnetron with diffraction output},
author = {Li Wei and Liu Yonggui and Zhang Jun and Yang Hanwu and Qian Baoliang},
abstractNote = {Directly radiating microwaves at TE{sub 11} mode, a relativistic magnetron with diffraction output (MDO) is experimentally investigated. Two important factors, transition section and working condition, significantly affecting the microwave powers, efficiencies, and pulse durations are analyzed. The experimental results on our designed MDO show that the optimized transition section with the parameters, 46 mm in height and 70 mm in length, is beneficial for producing high power TE{sub 11} mode microwaves. Under the low applied voltage condition (less than 650 kV), the power conversion efficiency will be higher than that obtained from the high applied voltage condition. {approx}24 ns of the microwave duration is a typical value under the voltage duration of 56 ns. Pulse shortens will happen if the applied voltage is higher than 650 kV. When the applied voltage reaches 880 kV, the microwave duration is only just {approx}12 ns. Impendence mismatch between the accelerator and the diode is the chief reason causing the pulse shortens.},
doi = {10.1063/1.4767647},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 19,
place = {United States},
year = {2012},
month = {11}
}