The parallel plates of a microchannel plate electron multiplier are segmented into conducting strips of width b so the potential can be fixed on the strips at staggered values. We model this using infinite-area plates, a finite portion of which is shown below. Find the potential φ(x, y) between the plates and sketch representative field lines and equipotentials. Note the orientation of the x- and y-axes.

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8=2 p=1 X p=0 b 9=-1 6=-2