Non-Maxwellian free-energy generation in the magnetotail due to chaotic particle motion. Memorandum report
1986
It has been shown previously that the charged-particle motion in a magnetotail-like magnetic field is generally nonintegrable and that the particle orbits can be classified into three distinct types; the bounded integrable orbits, unbounded stochastic orbits and unbounded transient orbits. The three distinct types of orbits occupy disjoint regions of the phase space. As a result, different regions of the phase space retain the memory of the existing distribution function for different lengths of time. The concept of differential memory in single-particle distributions is discussed. Physical implications for the dynamical properties of the magnetotail plasmas and the possible generation of non-Maxwellian features in the distribution function are discussed.
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