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Braz. J. Phys. vol.39 número1

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FIG. 1: Triode extraction system: (a) Triode extraction system de- de-signed mechanically: (1) Plasma electrode; (2) Insulator (Macor), (3) Acceleration electrode and (4) Deceleration electrode
FIG. 4: Influence of the acceleration voltage on ion beam emittance for various curvatures of convex plasma shapes without space charge.
FIG. 5: Ion beam emittance as a function of the curvatures of plasma meniscus at V acc = − 2000 volt.
FIG. 9: Influence of space charge on ion beam emittance for different curvatures of convex plasma shapes

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