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The contents of this book are the result of work performed in the
past three years to provide some answers to questions raised by
several colleagues wo- inginastrophysics.
Examiningseveraltransportprocessesinplasmasrelated to dissipative
e?ects in phenomena such as cooling ?ows, propagation of sound
waves, thermal conduction in the presence of magnetic ?elds, an-
lar momentum transfer in accretion disks, among many, one ?nds a
rather common pattern. Indeed when values for transport coe?cients
are required the overwhelming majority of authors refer to the
classical results obtained by L. Spitzer and S. Braginski over
forty years ago. Further, it is also often mentioned that under the
prescribed working conditions the values of such coe?cients are
usually insu?cient to provide agreement with observations. The
methodology followed by these authors is based upon Landau's -
oneering idea that collisions in plasmas may be substantially
accounted for when viewed as a di?usive process. Consequently the
ensuing basic kinetic equation is the Fokker-Planck version of
Boltzmann's equation as essentially proposed by Landau himself
nearly 70 years ago. Curiously enough the magni?cent work of the
late R. Balescu in both Classical and Non-Classical transport in
plasmas published in 1988 and also based on the Fokker-Planck
equation is hardly known in the astrophysical audience. The
previous work of Spitzer and Braginski is analyzed with much more
rigorous vision in his two books on the subject.
The contents of this book are the result of work performed in the
past three years to provide some answers to questions raised by
several colleagues wo- inginastrophysics.
Examiningseveraltransportprocessesinplasmasrelated to dissipative
e?ects in phenomena such as cooling ?ows, propagation of sound
waves, thermal conduction in the presence of magnetic ?elds, an-
lar momentum transfer in accretion disks, among many, one ?nds a
rather common pattern. Indeed when values for transport coe?cients
are required the overwhelming majority of authors refer to the
classical results obtained by L. Spitzer and S. Braginski over
forty years ago. Further, it is also often mentioned that under the
prescribed working conditions the values of such coe?cients are
usually insu?cient to provide agreement with observations. The
methodology followed by these authors is based upon Landau's -
oneering idea that collisions in plasmas may be substantially
accounted for when viewed as a di?usive process. Consequently the
ensuing basic kinetic equation is the Fokker-Planck version of
Boltzmann's equation as essentially proposed by Landau himself
nearly 70 years ago. Curiously enough the magni?cent work of the
late R. Balescu in both Classical and Non-Classical transport in
plasmas published in 1988 and also based on the Fokker-Planck
equation is hardly known in the astrophysical audience. The
previous work of Spitzer and Braginski is analyzed with much more
rigorous vision in his two books on the subject.
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