Wieser, Martin ; Barabash, Stas ; Futaana, Yoshifumi ; Holmström, Mats ; Bhardwaj, Anil ; Sridharan, R. ; Dhanya, M.B. ; Wurz, Peter ; Schaufelberger, Audrey ; Asamura, Kazushi (2009) Extremely high reflection of solar wind protons as neutral hydrogen atoms from regolith in space Planetary and Space Science, 57 (14-15). pp. 2132-2134. ISSN 0032-0633
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.pss.2009.09.012
Abstract
We report on measurements of extremely high reflection rates of solar wind particles from regolith-covered lunar surfaces. Measurements by the Sub-keV Atom Reflecting Analyzer (SARA) instrument on the Indian Chandrayaan-1 spacecraft in orbit around the Moon show that up to 20% of the impinging solar wind protons are reflected from the lunar surface back to space as neutral hydrogen atoms. This finding, generally applicable to regolith-covered atmosphereless bodies, invalidates the widely accepted assumption that regolith almost completely absorbs the impinging solar wind.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Solar Wind Interaction with Regolith; Energetic Neutral Atoms; Moon; Chandrayaan-1; Sub-keV Atom Reflecting Analyzer |
| ID Code: | 64249 |
| Deposited On: | 07 Oct 2011 13:10 |
| Last Modified: | 12 Apr 2012 06:20 |
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