Intense Microwave Generation by the Negative-Mass Instability,

Abstract

This paper examines the negative-mass stability properties of an E-layer for transverse electric (TE) and transverse magnetic (TM) waveguide modes in a conducting cylinder. The analysis is carried out for a relativistic nonneutral E-layer aligned parallel to a uniform axial magnetic field (B sub 0) (e sub z), within the context of the assumptions that the electron motion is ultrarelativistic (gamma sub zero >> 1) and that cube rt (nu/gamma sub zero) << 1, where nu is Budker's parameter and gamma sub zero mc squared is the electron energy. One of the most important features of the analysis is that the axial energy spread can have a large influence of stability behavior for both the TE and TM waveguide modes. By appropriate choice of system parameters, it is shown that the spectrum of microwave radiation generated by the negative-mass instability can be very narrow-band. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1978
Accession Number
ADA070482

Entities

People

  • Hwan-sup Uhm
  • Ronald C. Davidson

Organizations

  • University of Maryland

Tags

DTIC Thesaurus Topics

  • Angular Momentum
  • Bessel Functions
  • Coordinate Systems
  • Demographic Cohorts
  • Dispersion Relations
  • Dispersions
  • Electromagnetic Fields
  • Electron Beams
  • Electron Energy
  • Electrons
  • Frequency
  • Magnetic Fields
  • Perturbations
  • Power Spectra
  • Radiation
  • Spectra
  • Universities

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Microelectronics