Effects of impulsively heated electrons in solar flares

Using a one-dimensional particle code, the evolution of pulse heating of electrons in the flare loop is studied. The processes are studied in two modes: with and without electric current. One run was made for the system with constant electric current simulating the large inductance of the current loop. It was shown that pulse electron heating led to the formation of a double layer. This heating could trigger ion-acoustic instability in the current system of a flare loop. Both these effects increase the flare energy release. The generated electrostatic high-frequency waves can be observed as a radio burst. (author). 16 figs., 4 refs