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Ion Thruster Accelerator Grids 235 0 20 40 60 80 100 120 Fig. 5-28. CEX-3D results showing the XIPS third grid almost eliminates pits and grooves erosion evident in the NSTAR thruster (from [52]). XIPS NSTAR results more quickly. CEX-2D and CEX-3D use the same algorithms for the discharge chamber plasma and for beam ion trajectories. The codes have been benchmarked with each other, and for round beamlets that can be handled by CEX-2D, their results are within a few percent. References [1] H. R. Kaufman, “Technology of Electron-Bombardment Ion Thrusters,” in Advances in Electronics and Electron Physics, vol. 36, edited by L. Marton, New York: Academic Press, 1974. [2] A. T. Forrester, Large Ion Beams, New York: John Wiley and Sons, 1988. [3] G. R. Brewer, Ion Propulsion Technology and Applications, New York: Gordon and Breach, 1970. [4] J. R. Brophy, I. Katz, J. E. Polk, and J. R. Anderson, “Numerical Simulations of Ion Thruster Accelerator Grid Erosion,” AIAA-2002- 4261, 38th Joint Propulsion Conference, July 7–10, 2002. [5] V. J. Friedly and P. J. Wilbur, “High Current Hollow Cathode Phenomena,” Journal of Propulsion and Power, vol. 8, no. 3, pp. 635– 643, 1992. [6] I. Kameyama and P. J. Wilbur, “Measurement of Ions from High Current Hollow Cathodes Using Electrostatic Energy Analyzer,” Journal of Propulsion and Power, vol. 16, no. 3, pp. 529–535, 2000. Erosion Rate ( m/khr)PDF Image | Fundamentals of Electric Propulsion: Ion and Hall Thrusters
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