Wave-Kinetic Formulation of Incoherent Linear Mode Conversion.

摘要

Linear mode conversion are incorporated in wave kinetic theory when the incoming waves are incoherent, as occurs when the wave sources are turbulent processes or thermal emission. Mode conversion takes place when the rays of either wave mode cross the mode-conversion manifold in the ray phase space. Jump conditions are derived which match the incoming and outgoing wave actions across the mode-conversion manifold, leading to a pair of coupled wave-kinetic equations. Discussed also are how incoherent linear mode conversion acts as a source of wave entropy. Reprints. (jhd)