Magnetospheric ion sputtering and water ice grain size at Europa

We present the first calculation of Europa's sputtering (ion erosion) rate as a function of position on Europa's surface. We find a global sputtering rate of 2×1027H2O s−1, some of which leaves the surface in the form of O2 and H2. The calculated O2 production rate is 1×1026O2 s−1, H2 prod...

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Veröffentlicht in:	Planetary and space science 2013-03, Vol.77, p.64-73
Hauptverfasser:	Cassidy, T.A., Paranicas, C.P., Shirley, J.H., Dalton III, J.B., Teolis, B.D., Johnson, R.E., Kamp, L., Hendrix, A.R.
Format:	Artikel
Sprache:	eng
Schlagworte:	Apexes Erosion rate Estimates Europa Galileo NIMS Data Analysis Grain size Hemispheres Magnetospheres Mathematical analysis Regolith Sputtering Water Ice Sputtering Yields
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