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Pic code modeling of spacecraft charging potential during electron beam injection into a background of neutral gas and plasma, part 1
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Koga, J. K. Lin, C. S. Winglee, R. M. |
| Copyright Year | 1989 |
| Description | Injections of nonrelativistic electron beams from an isolated equipotential conductor into a uniform background of plasma and neutral gas were simulated using a 2-D electrostatic particle code. The ionization effects on spacecraft charging are examined by including interactions of electrons with neutral gas. The simulations show that the conductor charging potential decreases with increasing neutral background density due to the production of secondary electrons near the conductor surface. In the spacecraft wake, the background electrons accelerated towards the charged spacecraft produce an enhancement of secondary electrons and ions. Simulations run for longer times indicate that the spacecraft potential is further reduced and short wavelength beam-plasma oscillations appear. The results are applied to explain the spacecraft charging potential measured during the SEPAC experiments from Spacelab 1. |
| File Size | 1305517 |
| Page Count | 48 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19900012476 |
| Archival Resource Key | ark:/13960/t4rj9bv6w |
| Language | English |
| Publisher Date | 1989-01-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Design, Testing And Performance Neutral Gases Beam Injection Spacelab Sepac Payload Plasmas Physics Conductors Electron Beams Spacecraft Charging Particle Interactions Ionization Near Wakes Equipotentials Electrostatics 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 |
