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Fringing fields for electrostatic sector fields are defined by the command:
5 F(RINGING) F(IELD) <table#>
<entrance or exit angle
<curvature
of effective field boundary>
[example: F F 3 0 0.09819 ;]
[F F 1 0 0 ;]
For the entrance
angle
only ``0'' is allowed up to now.
The fringing-field integrals are taken from GIOSFF.DAT, if this mode
is active; the coefficients are taken from GICOFF.DAT otherwise.
Note that
-
is a coordinate perpendicular to the effective field boundary
and that
- G0 is the half electrode gap.
- Note further that all integrals must be taken from
outside to
inside
the main-field region.
Note that
is positive or negative for a convex or a concave field boundary, respectively.
KPII
1999-10-20