Electrohydrodynamically driven, large‐area liquid metal ion source for inertial confinement fusion
| Autor: | Arian L. Pregenzer |
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| Rok vydání: | 1990 |
| Předmět: | |
| Zdroj: | Review of Scientific Instruments. 61:571-573 |
| ISSN: | 1089-7623 0034-6748 |
| DOI: | 10.1063/1.1141920 |
| Popis: | Analysis of the electrohydrodynamic (EHD) equations of motion of a planar liquid‐lithium surface in the presence of a normal electric field suggest that liquid lithium may provide a large‐area ion source for intense ion‐beam diodes. Such sources are being developed for the Particle Beam Fusion Accelerator II at Sandia National Laboratories. In this paper, theoretical and experimental studies of the planar EHD ion source will be reviewed. When a planar liquid surface is subjected to an electric field of sufficient magnitude, EHD instabilities produce an array of cusps on the surface. The electric field enhancement at the apex of each cusp is sufficient to permit field evaporation of ions. The time delay between application of the electric field and ion emission depends on the magnitude and rate of increase of the applied electric field, and on the initial amplitude of the surface perturbation. Above 10 MV/cm, theory indicates that field emission will occur on a nanosecond time scale and that the characteristic spacing of emitters will be |
| Databáze: | OpenAIRE |
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