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Van Allen Probes Bibliography is from August 2012 through September 2021
Found 2 entries in the Bibliography.
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The effects of magnetic fields on photoelectron-mediated spacecraft potential fluctuations
Previously, we have experimentally studied photoelectron-mediated spacecraft potential fluctuations associated with time-dependent external electric fields. In this paper, we investigate the effects of magnetic fields on such spacecraft potential fluctuations. A magnetic field is created above the UV-illuminated surface of a spacecraft model to alter the escape rate of photoelectrons. The packet of the observed potential oscillations becomes less positive with increasing magnetic field strength because more of the emitted ph ...
Wang, X.; Malaspina, D.; Hsu, H.-W.; Ergun, R.; M., Hor\;
Published by: Journal of Geophysical Research: Space Physics Published on: 09/2014
YEAR: 2014   DOI: 10.1002/jgra.v119.910.1002/2014JA019923
chorus waves; magnetic fields; photoelectrons; spacecraft potential fluctuations; Van Allen Probes
Photoelectron-mediated spacecraft potential fluctuations
Electric field fluctuations such as those due to plasma waves in Earth\textquoterights magnetosphere may modulate photoelectrons emitted from spacecraft surface, causing fluctuations in spacecraft potential. We experimentally investigate such photoelectron-mediated spacecraft potential fluctuations. The photoelectric charge of a spacecraft model is found to increase with increasing applied electric field as more photoelectrons escape the spacecraft model surface and dissipates with a decrease in the electric field through co ...
Wang, X.; Malaspina, D.; Ergun, R.; M., Hor\;
Published by: Journal of Geophysical Research: Space Physics Published on: 02/2014
YEAR: 2014   DOI: 10.1002/2013JA019502
chorus waves; electric field; Magnetosphere; photoelectrons; plasma density; spacecraft potential fluctuations