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Sulfur Ion Implantations Into Condensed CO2: Implications for Europa

Mifsud, Duncan V., Kaňuchová, Zuzana, Herczku, Péter, Juhász, Zoltán, Kovács, Sándor T. S., Lakatos, Gergo, Rahul, K.K., Rácz, Richárd, Sulik, Béla, Biri, Sándor, and others. (2022) Sulfur Ion Implantations Into Condensed CO2: Implications for Europa. Geophysical Research Letters, 49 (24). Article Number GL100698. ISSN 0094-8276. (doi:10.1029/2022GL100698) (KAR id:99228)

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The ubiquity of sulfur ions within the Jovian magnetosphere has led to suggestions that the implantation of these ions into the surface of Europa may lead to the formation of SO2. However, previous studies on the implantation of sulfur ions into H2O ice (the dominant species on the Europan surface) have failed to detect SO2 formation. Other studies concerned with similar implantations into CO2 ice, which is also known to exist on Europa, have offered seemingly conflicting results. In this letter, we describe the results of a study on the implantation of 290 keV S+ ions into condensed CO2 at 20 and 70 K. Our results demonstrate that SO2 is observed after implantation at 20 K, but not at the Europa-relevant temperature of 70 K. We conclude that this process is likely not a reasonable mechanism for SO2 formation on Europa, and that other mechanisms should be explored instead.

Item Type: Article
DOI/Identification number: 10.1029/2022GL100698
Uncontrolled keywords: Planets, MAGNETOSPHERIC PHYSICS, Magnetosphere interactions with satellites and rings, PLANETARY SCIENCES: COMETS AND SMALL BODIES, Ices, Radiation and chemistry, PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS, Jovian satellites, Europa, Research Letter, SO2, sulfur ions, radiation chemistry, astrochemistry, planetary science
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Q Science > QB Astronomy > QB651 Planets, Minor
Q Science > QC Physics > QC807 Geophysics (for Applied Geophysics see TN269)
Q Science > QD Chemistry
Q Science > QE Geology > QE515 Geochemistry
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Funders: European Union (
Royal Society (
Hungarian Academy of Sciences (
Depositing User: Duncan Mifsud
Date Deposited: 17 Dec 2022 20:32 UTC
Last Modified: 31 Jan 2023 09:29 UTC
Resource URI: (The current URI for this page, for reference purposes)

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