Efficient, monochromatic, high-power microwave generator

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Microwave generation by electron beams in virtual cathode configurations can achieve significant power levels. However, most designs inherently have two competing mechanisms generating microwaves; namely the oscillating virtual cathode and the reflexing electrons. These two mechanisms tend to interfere destructively with each other. Specifically, the reflexing electrons subject the electron beam to two-stream instability, causing considerable heating of the electron beam. In addition, the space-charge of the reflexing electrons can cause the diode independence to fluctuate, resulting in oscillations of the electron beam energy. We have investigated a novel idea to remove these undesirable effects and we found that high-power, ... continued below

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Pages: 6

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Kwan, T.J.T. & Snell, C.M. January 1, 1986.

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Description

Microwave generation by electron beams in virtual cathode configurations can achieve significant power levels. However, most designs inherently have two competing mechanisms generating microwaves; namely the oscillating virtual cathode and the reflexing electrons. These two mechanisms tend to interfere destructively with each other. Specifically, the reflexing electrons subject the electron beam to two-stream instability, causing considerable heating of the electron beam. In addition, the space-charge of the reflexing electrons can cause the diode independence to fluctuate, resulting in oscillations of the electron beam energy. We have investigated a novel idea to remove these undesirable effects and we found that high-power, narrow-band, and monochromatic microwaves could be generated with efficiency of 10 to 20%. 16 refs., 7 figs.

Physical Description

Pages: 6

Notes

NTIS, PC A02/MF A01; 1.

Source

  • 6. international conference on high power particle beams, Kobe, Japan, 9 Jun 1986

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  • Other: DE86012385
  • Report No.: LA-UR-86-1937
  • Report No.: CONF-860665-8
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5732757
  • Archival Resource Key: ark:/67531/metadc1092848

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 1986

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

Description Last Updated

  • May 22, 2018, 1:41 p.m.

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Kwan, T.J.T. & Snell, C.M. Efficient, monochromatic, high-power microwave generator, article, January 1, 1986; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1092848/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.