For η = 75η_S: a) distribution of the kinetic energy of electrons after 50 s in the absence of collisions, together with a Maxwellian fit; b) electron temperature as a function of time in the absence of collisions, as estimated by Maxwellian fits; c) distribution of the kinetic energy of ions after 3000 s in the absence of collisions, together with a Maxwellian fit; d) ion temperature as a function of time in the absence of collisions, as estimated by Maxwellian fits.