Simulation Inference of Plasma Parameters From Langmuir Probe Measurements
Abstract A novel approach is presented to infer plasma parameters from Langmuir probe measurements. Three‐dimensional kinetic simulations capable of accounting for multiple physical processes and realistic measurement conditions, are used to construct synthetic data sets, or solution libraries, cons...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
American Geophysical Union (AGU)
2021-03-01
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| Series: | Earth and Space Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2020EA001344 |
| _version_ | 1818573825009254400 |
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| author | Pedro Alberto Resendiz Lira Richard Marchand |
| author_facet | Pedro Alberto Resendiz Lira Richard Marchand |
| author_sort | Pedro Alberto Resendiz Lira |
| collection | DOAJ |
| description | Abstract A novel approach is presented to infer plasma parameters from Langmuir probe measurements. Three‐dimensional kinetic simulations capable of accounting for multiple physical processes and realistic measurement conditions, are used to construct synthetic data sets, or solution libraries, consisting of computed probe collected currents, with corresponding plasma environment parameters. Applying the Swarm standard data analysis procedure to infer density and temperatures, and comparing them with values used in the simulations, provides an assessment of the uncertainties resulting from these procedures. A significant source of discrepancy is found to come from the neglect of minority light ions, and the effect of the sheath of the nearby satellite. An empirical relation is constructed, which reproduces the plasma density within 5%, given probe voltages and collected currents, and known temperatures, effective masses, plasma flow speeds, and the satellite floating potential. This relation is presented as a useful constraint between these several variables; not all of which being measured or estimated accurately in situ. |
| first_indexed | 2024-12-15T00:18:04Z |
| format | Article |
| id | doaj.art-f4689c295e814e27bc713511ccdaedee |
| institution | Directory Open Access Journal |
| issn | 2333-5084 |
| language | English |
| last_indexed | 2024-12-15T00:18:04Z |
| publishDate | 2021-03-01 |
| publisher | American Geophysical Union (AGU) |
| record_format | Article |
| series | Earth and Space Science |
| spelling | doaj.art-f4689c295e814e27bc713511ccdaedee2022-12-21T22:42:24ZengAmerican Geophysical Union (AGU)Earth and Space Science2333-50842021-03-0183n/an/a10.1029/2020EA001344Simulation Inference of Plasma Parameters From Langmuir Probe MeasurementsPedro Alberto Resendiz Lira0Richard Marchand1Theoretical Division Los Alamos National Laboratory Los Alamos NM USAUniversity of Alberta Edmonton AB CanadaAbstract A novel approach is presented to infer plasma parameters from Langmuir probe measurements. Three‐dimensional kinetic simulations capable of accounting for multiple physical processes and realistic measurement conditions, are used to construct synthetic data sets, or solution libraries, consisting of computed probe collected currents, with corresponding plasma environment parameters. Applying the Swarm standard data analysis procedure to infer density and temperatures, and comparing them with values used in the simulations, provides an assessment of the uncertainties resulting from these procedures. A significant source of discrepancy is found to come from the neglect of minority light ions, and the effect of the sheath of the nearby satellite. An empirical relation is constructed, which reproduces the plasma density within 5%, given probe voltages and collected currents, and known temperatures, effective masses, plasma flow speeds, and the satellite floating potential. This relation is presented as a useful constraint between these several variables; not all of which being measured or estimated accurately in situ.https://doi.org/10.1029/2020EA001344kinetic simulationsLangmuir probesspace plasma physicsswarm satellite |
| spellingShingle | Pedro Alberto Resendiz Lira Richard Marchand Simulation Inference of Plasma Parameters From Langmuir Probe Measurements Earth and Space Science kinetic simulations Langmuir probes space plasma physics swarm satellite |
| title | Simulation Inference of Plasma Parameters From Langmuir Probe Measurements |
| title_full | Simulation Inference of Plasma Parameters From Langmuir Probe Measurements |
| title_fullStr | Simulation Inference of Plasma Parameters From Langmuir Probe Measurements |
| title_full_unstemmed | Simulation Inference of Plasma Parameters From Langmuir Probe Measurements |
| title_short | Simulation Inference of Plasma Parameters From Langmuir Probe Measurements |
| title_sort | simulation inference of plasma parameters from langmuir probe measurements |
| topic | kinetic simulations Langmuir probes space plasma physics swarm satellite |
| url | https://doi.org/10.1029/2020EA001344 |
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