The influence of pick-up ion-induced wave pressures on the dynamics of the mass-loaded solar wind

Details The influence of pick-up ion-induced wave pressures on the dynamics of the mass-loaded solar wind The influence of pick-up ion-induced wave pressures on the dynamics of the mass-loaded solar wind

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995soph..158..353f&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 158, no. 2, p. 353-363

Physics

14

Ions, Plasma Dynamics, Plasma Pressure, Solar Physics, Solar Wind, Sun, Plasma Turbulence, Plasma Waves, Plasma-Particle Interactions, Solar Wind Velocity, Velocity Distribution

Scientific paper

The solar wind at larger distances is known to be a multicomponent plasma. The different components, solar ions, pick-up ions, and anomalous ions, are without collisional coupling but they are all coupled to the intrinsic wave turbulences by nonlinear wave-particle interactions. Since quite a long time it is not understood why dynamical processes associated with the loading of the primary solar wind secondary pick-up ions neither lead to a recognizable heating nor to a deceleration of the solar wind at larger distances. While the inefficient heating seems to be explained by the fact that pick-up ions do not assimilate quickly enough to the solar wind distribution function, the unobservable deceleration of the distant solar wind always remained mysterious. Different from all theoretical approaches up to now, here we intend to show that the wave-induced pick-up ion pressure has to be introduced into the equations of motion in an adequate non-polytropic form to correctly describe the multicomponent plasma dynamics. If this is done it becomes clear that the deceleration of the solar wind is considerably reduced or even vanishing.

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