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Plasma diagnostics by antenna impedance measurements
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Pound, E. Swenson, C. M. Jensen, M. D. Baker, K. D. |
| Copyright Year | 1993 |
| Description | The impedance of an electrically short antenna immersed in a plasma provides an excellent in situ diagnostic tool for electron density and other plasma parameters. By electrically short we mean that the wavelength of the free-space electromagnetic wave that would be excited at the driving frequency is much longer than the physical size of the antenna. Probes using this impedance technique have had a long history with sounding rockets and satellites, stretching back to the early 1960s. This active technique could provide information on composition and temperature of plasmas for comet or planetary missions. Advantages of the impedance probe technique are discussed and two classes of instruments built and flown by SDL-USU for determining electron density (the capacitance and plasma frequency probes) are described. |
| File Size | 144971 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930019631 |
| Archival Resource Key | ark:/13960/t78s9nc7q |
| Language | English |
| Publisher Date | 1993-01-01 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Impedance Measurement Plasma Composition Plasma Diagnostics Electron Density Concentration Rocket-borne Instruments Plasma Frequencies Plasma Temperature Impedance Probes Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
