Natural SciencesPhysicsElectromagnetismFluid DynamicsPlasma PhysicsMagnetized PlasmaMagnetohydrodynamicsPlasma TurbulenceTurbulenceTurbulent FlowAlpha EffectMagnetic TurbulenceTurbulence In Magnetized Plasmas
New determinations of the important, but poorly known α-effect are presented in the Second-Order Correlation Approximation with both gradients of density and turbulence intensity simultaneously involved. In both of the two approaches new results appear which are - if they are confirmed by numerical simulations - relevant to the design of new dynamo models. In our first approach the magnetic back-reaction is ignored but no restrictions on the rotation rate are imposed. The density stratification as well as the turbulence intensity inhomogeneity contribute with similar power to the production of the α-effect. The known equality of both contributions appears for fast rotation only