| Reference |
J.G. Bannenberg, W.H. Urbanus, R.-G.C. Wojke, H. Klein, A. Schempp, R.W. Thomae, T. Weis and P.W. van Amersfoort, Matching, transport and bunching of four 40-keV ion beams with an electrostatic quadrupole channel, Vacuum 39, 1031-1033 (1989) |
