Intense microwave generation by the negative-mass instability

Technical Report · Sun Jan 01 04:00:00 EST 1978

OSTI ID:5565150

Uhm, H; Davidson, R C

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.

• Research Organization: Maryland Univ., College Park (USA). Dept. of Physics and Astronomy
• OSTI ID: 5565150
• Report Number(s): AD-A-070482
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
BEAMS
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
INSTABILITY
LAYERS
LEPTON BEAMS
MAGNETIC FIELDS
MICROWAVE RADIATION
NEGATIVE MASS INSTABILITY
PARTICLE BEAMS
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
RADIATIONS