Many applications in materials processing, medical treatment, and imaging involv

Question

Many applications in materials processing, medical treatment, and imaging involve having a
narrow beam of charged particles impinge on a target. Assume for this application that you want
to have a current of I amps carried in an R=10-3 m radius beam of sulfur ions (S+2). Assume that
the sulfurs have been accelerated from a high potential (104 V) plasma region through a potential
difference of -104 V to the first aperture plate, which has a circular aperture of R=1mm. (The
aperture plates are grounded.) The beam traverses a vacuum space of one meter in the

Explanation / Answer

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