Space-charge-limited current in a miniaturized quadrupole channel

Thomae, R. W.; Siebenlist, F.; van Putten, A. E.; van Amersfoort, P. W.; Klein, H.; Schempp, A.; Weis, T.
April 1987
Applied Physics Letters;4/13/1987, Vol. 50 Issue 15, p1013
Academic Journal
We present measurements on the transport of low-energy ions through a miniaturized electrostatic quadrupole channel. These are done at a zero-current phase advance per cell of 60°. The limiting current is 50% smaller than is calculated with the Kapchinsky–Vladimirsky equations. This reduction is attributed to mismatch and misalignment, which have a pronounced influence in a miniaturized channel.


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