Numerical Calculation of the Potential Distribution in Ion Slit Lens Systems II

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Abstract
The potential distribution is computed in certain ion slit lens systems, consisting of three parallel slits in three parallel electrodes. In a previous paper 1 the case was treated where the slit widths were smaller than the distances to the neighbouring electrodes. In the present paper this requirement has been dropped; for the sake of simplicity, however, the computations are confined to the case, where the central electrode represents a plane of symmetry. Various approximation and iteration methods are given to find the necessary parameters to perform the SCHWARZ-CHRISTOFFEL transformation. Several typical examples are given.

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