Excitation of kinetic Alfven waves in a flaring loop

At the onset of a solar flare, initiated by magnetic reconnection high in t he corona, reconnection outflow sets up warm proton beams (PBs), streaming down along just-reconnected field lines through steady underlying plasma. I ncorporating this scenario, we study excitation of kinetic Alfven waves (KA Ws) by PBs, keeping the effects of a beam-induced electric field and therma l effects. Taking into account the high growth rate (similar to 10(5) s(-1) ), short relaxation distance (similar to 10(6) cm), and energy flux partiti on between the waves and the beam after relaxation (P-KAW/P-PB similar to 1 ). we conclude that PB-driven KAW instability is an efficient energy conver sion mechanism in Baring loops. The quasilinear spectral energy concentrati on at the largest wavenumbers indicates the possibility of nonlinear spectr al modification. We suggest that the resulting turbulence of KAWs plays an important role in the Bare plasma energization.