Imaging of ion transmission through glass capillaries
(English)Manuscript (preprint) (Other academic)
We present a technique which is successfully used to directly observe the charge patches formed on a single glass capillary walls. This is done by imaging the emitted visible photons emitted from 4.5 keV Ar1+-ions -interaction with the inner capillary walls, using a high resolution digital camera. Simultaneously, the ions transmitted through the capillary are detected. The number of emitted photons decreases with the increase in the tilt angle of the capillary. The time evolution of emitted photons has revealed that the charge patches formed by charging-up the capillary walls change their location during ion transmission.
Research subject Physics
IdentifiersURN: urn:nbn:se:su:diva-75610OAI: oai:DiVA.org:su-75610DiVA: diva2:517429