Energetic "self-extracted" H- ions in a Ba surface conversion source Back to all publications Publication date 1 January 1993 Reference R.M.A. Heeren, M.J. de Graaf, D. Ciric, H.J. Hopman and A.W. Kleyn, Energetic "self-extracted" H- ions in a Ba surface conversion source, Appl. Surf. Sci. 70/71, 332-336 (1993) Request this article