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Transmission of highly charged ions through mica nanocapillaries of rectangular cross-section
Stockholm University, Faculty of Science, Department of Physics. Lanzhou University, China.
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
Number of Authors: 3
2017 (English)In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, E-ISSN 1872-9584, Vol. 408, 61-66 p.Article in journal (Refereed) Published
Abstract [en]

We investigated the transmission of 7-keV Ne7+ ions through nanocapillaries of rectangular cross-section in phlogopite mica both by experiments and computer simulations. In the experiment, the role of the deposited charge in the transmitted ion intensity and angular distribution was studied. It is found that the rhombic angular profile is degraded during the process of rearrangement of the deposited charge on the capillary walls. Trajectory simulations are performed to understand the shaping of ion beam by the image force at tilt angles within the geometrical opening angle, as well as the degrading of the shaping due to the deposited charge when the tilt angle is larger than the geometrical opening angle. This reveals the interplay of the deposited charge and the image charge on the shaping of the ion beams when transmitting them through nanocapillaries of various geometrical cross sections.

Place, publisher, year, edition, pages
2017. Vol. 408, 61-66 p.
Keyword [en]
Nanocapillaries, Guiding effect, Highly charged ions
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-147929DOI: 10.1016/j.nimb.2017.03.126ISI: 000411773400014OAI: oai:DiVA.org:su-147929DiVA: diva2:1149827
Conference
18th International Conference on the Physics of Highly Charged Ions (HCI), Kielce, Poland, September 11-16, 2016
Available from: 2017-10-17 Created: 2017-10-17 Last updated: 2017-10-17Bibliographically approved

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