Transport of negative ions produced at a barium surface located wihtin a multicusp ion source Back to all publications Publication date 1 January 1989 Reference C.F.A. van Os, A.W. Kleyn, L.M. Lea, A.J.T. Holmes and P.W. van Amersfoort, Transport of negative ions produced at a barium surface located wihtin a multicusp ion source, Rev. Sci. Instrum. 60, 539-546 (1989)