Abstract:The paper describes experiments on the generation and transport of a low energy ͑70-120 keV͒, high intensity ͑10-30 A/cm 2 ͒ microsecond duration H ϩ ion beam ͑IB͒ in vacuum and plasma. The IB was generated in a magnetically insulated diode ͑MID͒ with an applied radial B field and an active hydrogen-puff ion source. The annular IB, with an initial density of j i ϳ10-20 A/cm 2 at the anode surface, was ballistically focused to a current density in the focal plane of 50-80 A/cm 2. The postcathode collimation and… Show more
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