Details

Autor(en) / Beteiligte

• Grimberg, Ansgar
• Baur, Heinrich
• Bochsler, Peter
• Bühler, Fritz
• Burnett, Donald S
• Hays, Charles C
• Heber, Veronika S
• Jurewicz, Amy J.G
• Wieler, Rainer

Titel

Solar Wind Neon from Genesis: Implications for the Lunar Noble Gas Record

Ist Teil von

• Science (American Association for the Advancement of Science), 2006-11, Vol.314 (5802), p.1133-1135

Ort / Verlag

Washington, DC: American Association for the Advancement of Science

Erscheinungsjahr

2006

Link zum Volltext

Quelle

Science Online_科学在线

Beschreibungen/Notizen

• Lunar soils have been thought to contain two solar noble gas components with distinct isotopic composition. One has been identified as implanted solar wind, the other as higher-energy solar particles. The latter was puzzling because its relative amounts were much too large compared with present-day fluxes, suggesting periodic, very high solar activity in the past. Here we show that the depth-dependent isotopic composition of neon in a metallic glass exposed on NASA's Genesis mission agrees with the expected depth profile for solar wind neon with uniform isotopic composition. Our results strongly indicate that no extra high-energy component is required and that the solar neon isotope composition of lunar samples can be explained as implantation-fractionated solar wind.