Evolution of Turbulent Magnetic Fluctuation Power with Heliospheric Distance

G. P. Zank, W. H. Matthaeus and C. W. Smith

Proceedings of Solar Wind 8, in press (1996)

Abstract:

On the basis of transport theories appropriate to a radially expanding solar wind, new results for the radial evolution of the energy density in solar wind fluctuations at MHD scales are derived. The models, which represent a departure from the well-known WKB description, include the effects of ``mixing'', driving the stream-stream interactions and interstellar pick-up ion generated waves as well as non-isotropic MHD turbulence.