Engineering topics
Publications and source records attributed to Barnes, A..
We analyze energy and momentum exchange associated with Landau damping of hydromagnetic waves, from a macroscopic viewpoint, and compare the conclusions with those of the resonant quasi-linear theory. It is found that the heating of protons and electrons is correctly given by the resonant theory, but that the momentum exchange is not correctly described by the resonant theory.
The difference in objectives, physical assumptions, and results among the most recent detailed models aimed at understanding energy transport in the solar wind are analyzed. Models have been judged primarily by comparing their predictions against spacecraft observations near 1 AU. However, the observed values of flow speed, density, and temperature fluctuate over a wide range so that the criteria for agreement between theory and observation are necessarily somewhat subjective.
Theoretical constraints on the character of microscale fluctuations in the solar wind are examined. The microfluctuations could be either ?discontinuities' or more smoothly varying structures. If the fluctuations are waves, they are probably mostly Alfv]en waves (or rotational discontinuities), and if they are stationary structures, they are tangential pressure balances (or tangential discontinuities). It is formally proved that a true analog of the small-amplitude MHD ?entropy wave' (or contact discontinuity) does not exist for collisionless plasmas.
Stellar wind flow models associating energy transport with propagation and dissipation of hydrodynamic waves and heat conduction
Relativistic kinetic theory of large amplitude transverse Alfven wave, discussing propagation in collisionless plasma
Solar wind deflection due to permanent lunar surface magnetism
Simple two fluid solar wind speed and proton temperature model, discussing nonthermal energy dissipation
Nonthermal heating in two fluid solar wind model
Bow shock associated hydromagnetic waves generation in upstream interplanetary medium, constructing model in terms of ion cyclotron resonance
Collisionless plasma heating by damping hydromagnetic waves applied to solar wind qualitative model, discussing magnetoacoustic wave energy
Quasi-linear theory of hydromagnetic waves in nonrelativistic collisionless plasma, noting resonant diffusion effect on plasma heating mode
Collisionless plasma heating by hydromagnetic waves in solar wind
Collisionless damping of fast hydromagnetic waves by stochastic electron heating, discussing method for obtaining damping decrements
Dispersion relation for hydromagnetic waves in infinite collisionless plasma in static magnetic field, using numerical solutions