Abstract
With a view to increasing the intensity of charged particle beams, a combined electrostatic lens consisting of three coaxial cylinders has been theoretically studied. The proposed lens is capable of focusing both paraxial beams (by an axisymmetric lens) and nonparaxial beams (by a coaxial cylindrical lens). The parameters of this combined lens have been evaluated by numerical methods. The gain in the beam intensity provided by the proposed lens in comparison to the widely used single axisymmetric lens is determined.
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Original Russian Text © T.Ya. Fishkova, 2009, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2009, Vol. 35, No. 9, pp. 31–36.
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Fishkova, T.Y. A combined electrostatic lens. Tech. Phys. Lett. 35, 404–406 (2009). https://doi.org/10.1134/S1063785009050058
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DOI: https://doi.org/10.1134/S1063785009050058