| Reference |
W.H. Urbanus, R.-G.C. Wojke, R.J.J.M. Steenvoorden, J.G. Bannenberg, H. Klein, A. Schempp, R.W. Thomae, T. Weis and P.W. van Amersfoort, Simultaneous transport of N+ and N2+ ions through a periodic focusing quadrupole channel, Nucl. Instrum. Methods Phys. Res. A 276, 433-444 (1989) |
