Dynamics of Guiding Highly Charged Ions through SiO2 Nanocapillaries
2010 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 82, no 052901Article in journal (Refereed) Published
Time evolution of angular distributions of transmitted ions through SiO2 nanocapillaries wasmeasured under defined initial conditions: already charged, as well as fully dischargedcapillaries. We find distinct charge patterns and describe them quantitatively with the help of amodel calculation. This results in a pattern of a few number of charge patches, guiding ions inthe stationary state of transmission. For the already charged capillary membrane, we show a“memory effect” in the form of a double peak structure in the transmitted angulardistributions. The time evolution of these structures reflects charge relaxation andrearrangement of the charge patches. The re-arrangement of the charge patches is much fasterthan the discharge, suggesting that the charge relaxation inside the capillaries can be drivenby the incident charges, such as a Frenkel-Poole process.
Place, publisher, year, edition, pages
2010. Vol. 82, no 052901
Physical Sciences Atom and Molecular Physics and Optics
Research subject Physics
IdentifiersURN: urn:nbn:se:su:diva-42180DOI: 10.1103/PhysRevA.82.052901ISI: 000283838000005OAI: oai:DiVA.org:su-42180DiVA: diva2:344264