| Reference |
F. Siebenlist, R.W. Thomae, P.W. van Amersfoort, F.G. Schonewille, E.H.A. Granneman, H. Klein, A. Schempp and T. Weiss, Matching of a cylindrical ion beam to a periodic quadrupole channel, Nucl. Instrum. Methods Phys. Res. A 256, 207-218 (1987) |