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By using a three-dimensional particle-in-cell code, this paper reports on the electron-beam propagation behavior in a drift tube under two situations. First, it investigated the influence of the acceleration potential on the beam trajectory when using a periodic permanent magnet (PPM) focusing structure upon keeping constant either the electric current or the beam perveance. Next, taking for granted...
By using a 2.5 and 3-D particle-in-cell code, this paper reports on the electron beam propagation behavior, in a drift tube, under different acceleration potentials ranging from 15 kV to 125 kV in a PPM (periodic-permanent magnet) focusing structure. The investigation is carried out under two approaches. First, an electron beam with a constant electric current of Iomicron = 24 A is injected into a...
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