[Zurück]

E. Gruber, G. Kowarik, F. Ladinig, Johannes Waclawek, D. Schrempf, F. Aumayr, R. Bereczky, K. Tökési, P. Gunacker, T. Schweigler, C. Lemell, J. Burgdörfer:
"Temperature control of ion guiding through insulating capillaries";
Physical Review A, 86 (2012), S. 0629011 - 0629018.

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 insulatingmaterial. 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.

http://dx.doi.org/10.1103/PhysRevA.86.062901