Fermi acceleration and particle pitch angle scattering

Details Fermi acceleration and particle pitch angle scattering Fermi acceleration and particle pitch angle scattering

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978ap%26ss..53..421s&link_type=abstract

Astrophysics and Space Science, vol. 53, no. 2, Feb. 1978, p. 421-427. NSF-supported research.

Astronomy and Astrophysics

Astrophysics

1

Extragalactic Radio Sources, Flow Velocity, Particle Acceleration, Pitch (Inclination), Relativistic Particles, Wave Scattering, Collisionless Plasmas, Magnetohydrodynamic Waves, Particle Trajectories, Thermal Plasmas, Turbulent Flow

Scientific paper

The effect of particle streaming instability on Fermi acceleration is investigated. When velocity gradients in a nearly collisionless plasma are sharp, the gain time for relativistic particles is comparable to that obtained in the absence of pitch-angle scattering. Such an observation leads to the conclusion that Fermi acceleration of thermal particles is quenched, but the Fermi acceleration coefficient for relativistic particles is unchanged.

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