The influence of momentum distribution of source particles on Fermi acceleration in shock waves

Details The influence of momentum distribution of source particles on Fermi acceleration in shock waves The influence of momentum distribution of source particles on Fermi acceleration in shock waves

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984chjss...4..184m&link_type=abstract

Chinese Journal of Space Science, vol. 4, July 1984, p. 184-190. In Chinese, with abstract in English.

Statistics

1

Energy Spectra, Momentum, Particle Acceleration, Shock Waves, Distribution Functions, Fermi-Dirac Statistics, Time Dependence

Scientific paper

The time dependent energy spectra of accelerated particles in Fermi acceleration by shock waves have been calculated for various momentum distributions of source particles and parameters. It is shown that the high energy parts of accelerated particle spectra are power-law forms over sufficiently long time, no matter what the momentum distribution possessed by source particles. But the time evolution of the energy spectrum of accelerated particles depends on the momentum distribution of source particles; therefore, it is unsuitable for a transient shock process that the energy spectra of accelerated particles are represented by power-law form with constant index.

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