[en] Full text: Ionization and excitation of H₂ or D₂ have been the subject of intensive studies during the last three decades. Very recently, experimental and theoretical works have been devoted to the analysis of the processes that are responsible to electron ejection after the impact of fast charged particles. In the case of 13.6 MeV / amu S¹⁵⁺ + D₂ collision, the ejection of an electron in coincidence with D⁺ fragments was analyzed by measuring both time of flight and position of the collision partners. From the resulting spectra, the different processes (ground state dissociation, ionization + excitation, autoionizing double excitation and double ionization) could be separated. In particular, autoionizing double excitation is found to be dominant for D⁺ and emitted electron energies in the range 0.7 eV - 3.5 eV and 5 eV - 15 eV, respectively. More detailed information for autoionizing double excitation could be obtained by measuring electrons in fast e^- + D₂ collisions. Superimposed on the ionisation spectrum, small structures centred at energies below 15 eV are clearly observed. This reproducible structure is attributed to double excitation (DE) of D₂. Subtraction of this ionization contribution leads to a DE spectrum, that could be compared to theoretical results. The structures observed in the experiment are also present in the calculated spectrum. The calculation shows that the contribution of Q₁ and Q₂ resonances, lying above the first and second ionization threshold, respectively, are dominant. The peak centred at energies larger than 10 eV results from interference between direct ionisation and autoionisation while the molecule dissociates. The dependence of the autoionized cross sections with the projectile velocity will be also presented at the conference