摘要
Ion guiding through insulating capillaries has been discovered more than one decade[1]. The experiments and the-oretical simulations reveal that the self-organized charge-up plays a dominant role in low-energy ion transmission[1??3].Although a lot of achievements are obtained in experiments and simulations, yet many details of guiding mechanismsare not fully understood. To further understand the guiding mechanism, we perform a simulation program basedon the idea proposed in Ref. [3] and some results are reported.3 keV Ne7+ ions with the current density of 100 pA/mm2 are injected into a single nanocapillary with a diameterof 100 nm and a length of 10 m. In this case, the number of ions inserted into the capillary per second is 1. Thedivergence of the ion beam is about 0.3, which is measured experimentally.
