QUASI-LINEAR MODEL FOR THE PLASMA MECHANISM OF NARROW-BAND MICROWAVE BURST GENERATION

Characteristic features of the plasma model for radio emission from th e extending fronts of solar flare energy release are studied. It is sh own that the electron distribution is formed near the thermal fronts a s stationary beam injection through the boundary into the cold plasma semi-space. A principal new result is a conclusion about the localizat ion of a plasma turbulence region - the source of emission in a narrow layer before the thermal front, that makes it possible to explain the burst narrow-band feature in a natural way. Wide capabilities of the hare loop structure analysis using the narrow-band emission parameters are demonstrated.