ASSOCIATIVE IONISATION OF C+ and D- A. Naji, K. Olamba , J.P. Chenu, S. Szücs, P. Defrance and F. Brouillard Institut de Physique, chemin du Cyclotron 2, B-1348 Louvain-la-Neuve, Belgium Absolute cross sections for associative ionisation of C+ and D- ions have been measured in the energy range 0.01-2.5 eV.