Langmuir Turbulence Driven By Beams In Solar Wind Plasmas with Long Wavelength Density Fluctuations.

The self-consistent evolution of Langmuir turbulence generated by electron beams in solar wind plasmas with density inhomogeneities is calculated by numerical simulations based on a 1D Hamiltonian model. It is shown, owing to numerical simulations performed with parameters relevant to type III solar bursts' conditions at 1 AU, that the presence of long-wavelength random density fluctuations of suffciently large average level crucially modifies the well-known process of beam interaction with Langmuir waves in homogeneous plasmas. [ABSTRACT FROM AUTHOR]