Charge exchange in cometary coma: Discovery of H- ions in the solar wind close to comet 67P/Churyumov-Gerasimenko
Publisher DOI
Abstract
As Rosetta was orbiting comet 67P/Churyumov-Gerasimenko, the Ion and Electron Sensor detected negative particles with angular distributions like those of the concurrently measured solar wind protons but with fluxes of only about 10% of the proton fluxes and energies of about 90% of the proton energies. Using well-known cross sections and energy-loss data, it is determined that the fluxes and energies of the negative particles are consistent with the production of H- ions in the solar wind by double charge exchange with molecules in the coma.
Date Issued
2015
Publication Type
Article
Subject(s)
Language(s)
en
Author(s)
Burch, J. L. | |
Cravens, T. E. | |
Llera, K. | |
Goldstein, R. | |
Mokashi, P. | |
Broiles, T. |
Additional Credits
Journal
Geophysical Research Letters
Publisher
American Geophysical Union
ISSN
0094-8276
Access(Rights)
open.access