Guiding of slow highly charged ions through insulating nano-capillaries

The guiding of highly charged ions through SiO2 nano-capillaries has been investigated by our group, using 7 keV Ne7+-ions. We studied in particular the transmission of ions incident at angles greater than the angle given by the capillary aspect ratio as a function of charge incident on the capillary membrane. In this report we show the re-arrangement of charge patches inside the capillary by observing the evolution of the two-dimensional angular distributions of the transmitted ions.