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&CELL: PERIODICITY


direction

The direction in which the cell is infinitely repeated. Repetition in r is not permitted because of the method used to calculate the potentials in cylindrical geometry.

Cylindrical geometries are handled via a conformal mapping onto a Cartesian coordinate system. An r-periodicity would becomes an x-periodicity with non-constant intervals, which is technically difficult to deal with. Contact the author if there is a need for such a periodicity.


length

The length of one full period in cm for x and y periodicities and in degrees for periodicity in phi.
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Formatted on 0103-05-16 at 14:04.