Spacecraft surface charging within geosynchronous orbit observed by the Van Allen Probes: SPACECRAFT CHARGING ON VAN ALLEN PROBES
Abstract
Using the Helium Oxygen Proton Electron (HOPE) and Electric Field and Waves (EFW) instruments from the Van Allen Probes, we explored the relationship between electron energy fluxes in the eV and keV ranges and spacecraft surface charging. We present statistical results on spacecraft charging within geosynchronous orbit by L and MLT. An algorithm to extract the H+ charging line in the HOPE instrument data was developed to better explore intense charging events. Also, this study explored how spacecraft potential relates to electron number density, electron pressure, electron temperature, thermal electron current, and low-energy ion density between 1 and 210 eV. It is demonstrated that it is imperative to use both EFW potential measurements and the HOPE instrument ion charging line for examining times of extreme spacecraft charging of the Van Allen Probes. The results of this study show that elevated electron energy fluxes and high-electron pressures are present during times of spacecraft charging but these same conditions may also occur during noncharging times. Furthermore, we also show noneclipse significant negative charging events on the Van Allen Probes.
- Authors:
-
- Department of Climate and Space Engineering, University of Michigan, Ann Arbor Michigan USA
- Los Alamos National Laboratory, Los Alamos New Mexico USA
- School of Physics and Astronomy, University of Minnesota, Minneapolis Minnesota USA
- Planetary Science Institute, Tucson Arizona USA
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1239696
- Alternate Identifier(s):
- OSTI ID: 1239697; OSTI ID: 1247675
- Report Number(s):
- LA-UR-15-27864
Journal ID: ISSN 1542-7390
- Grant/Contract Number:
- NAS5-01072; LA-UR-15-27864; 967399; NWX11AO60G; NWX144AC02G; AGS-1102863; AC52-06NA25396
- Resource Type:
- Published Article
- Journal Name:
- Space Weather (Online)
- Additional Journal Information:
- Journal Name: Space Weather (Online) Journal Volume: 14 Journal Issue: 2; Journal ID: ISSN 1542-7390
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Sarno-Smith, Lois K., Larsen, Brian A., Skoug, Ruth M., Liemohn, Michael W., Breneman, Aaron, Wygant, John R., and Thomsen, Michelle F. Spacecraft surface charging within geosynchronous orbit observed by the Van Allen Probes: SPACECRAFT CHARGING ON VAN ALLEN PROBES. United States: N. p., 2016.
Web. doi:10.1002/2015SW001345.
Sarno-Smith, Lois K., Larsen, Brian A., Skoug, Ruth M., Liemohn, Michael W., Breneman, Aaron, Wygant, John R., & Thomsen, Michelle F. Spacecraft surface charging within geosynchronous orbit observed by the Van Allen Probes: SPACECRAFT CHARGING ON VAN ALLEN PROBES. United States. https://doi.org/10.1002/2015SW001345
Sarno-Smith, Lois K., Larsen, Brian A., Skoug, Ruth M., Liemohn, Michael W., Breneman, Aaron, Wygant, John R., and Thomsen, Michelle F. Sat .
"Spacecraft surface charging within geosynchronous orbit observed by the Van Allen Probes: SPACECRAFT CHARGING ON VAN ALLEN PROBES". United States. https://doi.org/10.1002/2015SW001345.
@article{osti_1239696,
title = {Spacecraft surface charging within geosynchronous orbit observed by the Van Allen Probes: SPACECRAFT CHARGING ON VAN ALLEN PROBES},
author = {Sarno-Smith, Lois K. and Larsen, Brian A. and Skoug, Ruth M. and Liemohn, Michael W. and Breneman, Aaron and Wygant, John R. and Thomsen, Michelle F.},
abstractNote = {Using the Helium Oxygen Proton Electron (HOPE) and Electric Field and Waves (EFW) instruments from the Van Allen Probes, we explored the relationship between electron energy fluxes in the eV and keV ranges and spacecraft surface charging. We present statistical results on spacecraft charging within geosynchronous orbit by L and MLT. An algorithm to extract the H+ charging line in the HOPE instrument data was developed to better explore intense charging events. Also, this study explored how spacecraft potential relates to electron number density, electron pressure, electron temperature, thermal electron current, and low-energy ion density between 1 and 210 eV. It is demonstrated that it is imperative to use both EFW potential measurements and the HOPE instrument ion charging line for examining times of extreme spacecraft charging of the Van Allen Probes. The results of this study show that elevated electron energy fluxes and high-electron pressures are present during times of spacecraft charging but these same conditions may also occur during noncharging times. Furthermore, we also show noneclipse significant negative charging events on the Van Allen Probes.},
doi = {10.1002/2015SW001345},
journal = {Space Weather (Online)},
number = 2,
volume = 14,
place = {United States},
year = {Sat Feb 27 00:00:00 EST 2016},
month = {Sat Feb 27 00:00:00 EST 2016}
}
https://doi.org/10.1002/2015SW001345
Web of Science
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