Coherent microwave generation from a pseudospark cathode Cherenkov maser

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Abstract

Experimental results are presented from the first free electron maser experiment to use a pseudospark electron source. A pulsed, 70–80 kV, 10 A electron beam of normalized brightness 10^11A(m*rad)^(−2) and current density 1kAcm^(−2) from a pseudospark electron cathode was used to produce coherent microwave radiation via a Cherenkov interaction between the electron beam and the TM01 mode of a 60-cm-long alumina-lined waveguide. A gain of 29 dB was measured with an output power of 2 kW in the frequency range 25.5–28.6 GHz. The experimental results were found to be consistent with numerical simulations of Cherenkov amplification.
LanguageEnglish
Article number020701
Number of pages5
JournalPhysical Review Special Topics: Accelerators and Beams
Volume2
Issue number2
DOIs
Publication statusPublished - 17 Feb 1999

Fingerprint

Microwave generation
Masers
masers
Electron beams
Cathodes
cathodes
electron beams
Electron sources
microwaves
electron sources
Electrons
Beam plasma interactions
free electrons
Amplification
Luminance
brightness
Waveguides
Current density
Alumina
aluminum oxides

Keywords

  • maser
  • Cherenkov
  • pseudospark

Cite this

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title = "Coherent microwave generation from a pseudospark cathode Cherenkov maser",
abstract = "Experimental results are presented from the first free electron maser experiment to use a pseudospark electron source. A pulsed, 70–80 kV, 10 A electron beam of normalized brightness 10^11A(m*rad)^(−2) and current density 1kAcm^(−2) from a pseudospark electron cathode was used to produce coherent microwave radiation via a Cherenkov interaction between the electron beam and the TM01 mode of a 60-cm-long alumina-lined waveguide. A gain of 29 dB was measured with an output power of 2 kW in the frequency range 25.5–28.6 GHz. The experimental results were found to be consistent with numerical simulations of Cherenkov amplification.",
keywords = "maser, Cherenkov, pseudospark",
author = "H. Yin and W. He and Robb, {G. R. M.} and Phelps, {A. D. R.} and K. Ronald and Cross, {A. W.}",
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T1 - Coherent microwave generation from a pseudospark cathode Cherenkov maser

AU - Yin, H.

AU - He, W.

AU - Robb, G. R. M.

AU - Phelps, A. D. R.

AU - Ronald, K.

AU - Cross, A. W.

N1 - This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

PY - 1999/2/17

Y1 - 1999/2/17

N2 - Experimental results are presented from the first free electron maser experiment to use a pseudospark electron source. A pulsed, 70–80 kV, 10 A electron beam of normalized brightness 10^11A(m*rad)^(−2) and current density 1kAcm^(−2) from a pseudospark electron cathode was used to produce coherent microwave radiation via a Cherenkov interaction between the electron beam and the TM01 mode of a 60-cm-long alumina-lined waveguide. A gain of 29 dB was measured with an output power of 2 kW in the frequency range 25.5–28.6 GHz. The experimental results were found to be consistent with numerical simulations of Cherenkov amplification.

AB - Experimental results are presented from the first free electron maser experiment to use a pseudospark electron source. A pulsed, 70–80 kV, 10 A electron beam of normalized brightness 10^11A(m*rad)^(−2) and current density 1kAcm^(−2) from a pseudospark electron cathode was used to produce coherent microwave radiation via a Cherenkov interaction between the electron beam and the TM01 mode of a 60-cm-long alumina-lined waveguide. A gain of 29 dB was measured with an output power of 2 kW in the frequency range 25.5–28.6 GHz. The experimental results were found to be consistent with numerical simulations of Cherenkov amplification.

KW - maser

KW - Cherenkov

KW - pseudospark

UR - https://journals.aps.org/prab/

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DO - 10.1103/PhysRevSTAB.2.020701

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JO - Physical Review Special Topics: Accelerators and Beams

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