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We have designed and constructed a compact duoPIGatron-type ion source, for possible use in ion implanters, in which ions are extracted from a side aperture in contrast to conventional duoPIGatron sources with axial ion extraction. The size of the side extraction aperture is 1 x 40 mm(2). The ion source was developed to study physical and technological(More)
Let P be a simple polygon with m edges, which is the disjoint union of k simple polygons , all monotone in a common direction u, and let Q be another simple polygon with n edges, which is the disjoint union of ℓ simple polygons, all monotone in a common direction v. We show that the combinatorial complexity of the Minkowski sum P ⊕ Q is O(kℓmnα(min{m, n})).(More)
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