On the efficiency of particle acceleration by moving magnetic mirrors

Abstract

view Abstract Citations (22) References (6) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the efficiency of particle acceleration by moving magnetic mirrors. Eichler, D. Abstract The paper reexamines the question of efficiency of acceleration by magnetic magnitude fluctuations (mirrors) in the context of the various situations in which it has been invoked. The study points out that although a thermal particle absorbs less power than a relativistic one, the thermal particle will invariably be heated beyond observed limits before appreciable acceleration of suprathermal particles takes place. In this sense, acceleration by magnetic mirrors is exceedingly inefficient. A burst of large-scale turbulence, suitable for Fermi acceleration, would be degraded into some other form before accelerating any fast particles appreciably. It is claimed that moving magnitude fluctuations in the magnetic field are generally not a viable mechanism for fast particle acceleration. Publication: The Astrophysical Journal Pub Date: April 1979 DOI: 10.1086/156967 Bibcode: 1979ApJ...229..409E Keywords: Cosmic Rays; Fermi Surfaces; Magnetic Mirrors; Particle Acceleration; Radio Galaxies; Turbulence Effects; Degradation; Fluctuation Theory; Kolmogoroff Theory; Relativistic Particles; Thermal Absorption; Thermal Plasmas; Time Dependence; Space Radiation; Cosmic Rays:Acceleration; Magnetic Fields:Plasma full text sources ADS |