Fundamental emission for type III bursts in the interplanetary medium: The role of ion-sound turbulence

摘要: It is argued (a) that the onset times of type III radio emission and streaming electrons implies bursts in interplanetary medium are generated predominantly at fundamental, (b) view recent observations ion-sound waves theory generation should be revised to take account these waves, (c) favours fundamental emission. A detailed discussion effect on given. The most important results are: (1) Ion-sound cause enhanced (over scattering off thermal ions) (2) Second harmonic also for Te> 5 × 105 K, e.g., low corona, but suppressed Te< medium. (3) bump-in-the-tail instability Langmuir can by presence waves; it may replaced an analogous which transverse directly, with no associated second harmonic, there unresolved problems this process. (4) Very frequency scatter radiation. (5) Although have been observed too high a relevant processes, seems likely required frequencies present do play roles bursts.