Temperature control of ion guiding through insulating capillaries

E. Gruber, G. Kowarik, F. Ladinig, J. P. Waclawek, D. Schrempf, F. Aumayr, R. J. Bereczky, K. Tokési, P. Gunacker, T. Schweigler, C. Lemell, J. Burgdörfer

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Abstract

Guiding of highly charged ions through tilted capillaries promises to develop into a tool to efficiently collimate and focus low-energy ion beams to sub-micrometer spot size. One control parameter to optimize guiding is the residual electrical conductivity of the insulating material. Its strong, nearly exponential temperature dependence is the key to transmission control and can be used to suppress transmission instabilities arising from flux fluctuations of incident ions which otherwise would lead to Coulomb blocking of the capillary. We demonstrate the strong dependence of transmission of Ar7+ ions through a single macroscopic glass capillary on temperature and ion flux. Results in the regime of dynamical equilibrium can be described by balance equations in the linear-response regime.

Original languageEnglish
Article number062901
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume86
Issue number6
DOIs
Publication statusPublished - Dec 4 2012

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Gruber, E., Kowarik, G., Ladinig, F., Waclawek, J. P., Schrempf, D., Aumayr, F., Bereczky, R. J., Tokési, K., Gunacker, P., Schweigler, T., Lemell, C., & Burgdörfer, J. (2012). Temperature control of ion guiding through insulating capillaries. Physical Review A - Atomic, Molecular, and Optical Physics, 86(6), [062901]. https://doi.org/10.1103/PhysRevA.86.062901