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Progress in next ion optics modeling
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Boyd, Iain D. Emhoff, Jerold W. |
| Copyright Year | 2004 |
| Description | Results are presented from an ion optics simulation code applied to the NEXT ion thruster geometry. The error in the potential field solver of the code is characterized, and methods and requirements for reducing this error are given. Results from a study on electron backstreaming using the improved field solver are given and shown to compare much better to experimental results than previous studies. Results are also presented on a study of the beamlet behavior in the outer radial apertures of the NEXT thruster. The low beamlet currents in this region allow over-focusing of the beam, causing direct impingement of ions on the accelerator grid aperture wall. Different possibilities for reducing this direct impingement are analyzed, with the conclusion that, of the methods studied, decreasing the screen grid aperture diameter eliminates direct impingement most effectively. |
| File Size | 845920 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20040110839 |
| Archival Resource Key | ark:/13960/t6qz76937 |
| Language | English |
| Publisher Date | 2004-08-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Propulsion And Power Propulsion System Performance Impingement Xenon Ion Propulsion Ion Engines Propulsion System Configurations Ion Optics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
