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- W2078142764 abstract "Space charge effects in a self-magnetically insulated pinch diode have been studied numerically using the electromagnetic time-independent BFCPIC code (Particle-In-Cell code based on Boundary-Fitted Coordinates). The influence of the eigenfields on the electromagnetic system and in particular on the focusing properties will be discussed in detail. In the case of a bipolar flow of electrons and ions about 77% of the electrons reach the anode near the rotational axis. Due to accumulating space charge a potential hill is established in a region close to the rotational axis. The corresponding radial electric field slows down the electrons, causing them to lose most of their kinetic energy, before they are accelerated almost perpendicular to the anode. The angle between the normal to the anode and the current density of the electrons lies between 15 and 30° which is confirmed by experimental results from Maron [Phys. Rev. Lett. 45 (1980) 1849]. It will be demonstrated that the focusing properties of the pinch diode are influenced by this effect dramatically: As a consequence of the large electric field near the axis the ions from the lower region of the diode are defocused as experimentally observed by Goldstein et al. [Phys. Rev. Lett. 40 (1978) 1504]." @default.
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- W2078142764 date "1990-05-01" @default.
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- W2078142764 title "Space charge effects in a self-magnetically insulated pinch diode" @default.
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- W2078142764 doi "https://doi.org/10.1016/0168-9002(90)90573-o" @default.
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