The effect of turbulence on the K-parallel-B relativistic beam instability

Details The effect of turbulence on the K-parallel-B relativistic beam instability The effect of turbulence on the K-parallel-B relativistic beam instability

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...247.1078s&link_type=abstract

Astrophysical Journal, Part 1, vol. 247, Aug, 1, 1981, p. 1078-1088.

Astronomy and Astrophysics

Astrophysics

3

Magnetohydrodynamic Stability, Nonuniform Magnetic Fields, Plasma Turbulence, Plasma Waves, Relativistic Electron Beams, Turbulence Effects, Astronomical Models, Astrophysics, Extragalactic Radio Sources, Galactic Clusters, Gyrofrequency, Particle Acceleration, Plasma-Particle Interactions, Random Walk, Vlasov Equations, Wave Propagation, X Ray Sources

Scientific paper

The paper investigates effects of magnetic irregularities causing electron gyrophase diffusion on a process involving a field-aligned electron beam. Inclusion of gyrophase diffusion results in a change in the formula for the wave growth rate, and an equation is obtained which shows that when magnetic irregularities are present, the usual delta function in the growth rate formula must be replaced by a Lortentzian function. Physical consequences are also given, which indicate that irregularities may enhance or diminish the growth rate. Results include the discovery that some electron beams may exist without being isotropized by self-generated Alfven waves; and due to the frequency dependence for the broadening parameter, the growth rate spectrum may differ substantially from that calculated for a homogeneous plasma.

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