Ion source technology needed to produce large area, high current, and uniform ion beams is reviewed from a view-point of industrial application of the fusion technology.First, an outline is given of the structure and the features of magnetic multipole ion sources, which were developed in the area of fusion research.Then, the production of high current ion beams of various gas species from a magnetic multipole ion source is described.Finally, techniques to produce a uniform distribution of the beam intensity are briefly explained.
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