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An electrostatic lens is a device that assists in the transport of charged particles. Electrostatic lenses can focus, and also accelerate or decelerate charged particles by creating an electric field that exerts a force on the charged particles. For instance, they are widely used in the extraction and acceleration of electron or ion beams Systems of electrostatic lenses can be designed in the same way as optical lenses, so electrostatic lenses easily magnify or converge the charged particle trajectories. As the focusing properties are

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