Lefta): electric field as a function of distance induced by an electron beam injected in the solar corona and propagating out through the solar corona and the solar wind. The electric field is displayed at 100, 200, 450 and 750 s after injection. Right b): probability density function of log E for 100, 200, 450 and 750 s after electron injection from top to bottom panel. The bin size is 0.125 in log space.