Title of article
Extremely high reflection of solar wind protons as neutral hydrogen atoms from regolith in space
Author/Authors
Wieser، نويسنده , , Martin and Barabash، نويسنده , , Stas and Futaana، نويسنده , , Yoshifumi and Holmstrِm، نويسنده , , Mats and Bhardwaj، نويسنده , , Anil and Sridharan، نويسنده , , R. and Dhanya، نويسنده , , M.B. and Wurz، نويسنده , , Peter and Schaufelberger، نويسنده , , Audrey and Asamura، نويسنده , , Kazushi، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
3
From page
2132
To page
2134
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.
Keywords
moon , Chandrayaan-1 , Sub-keV Atom Reflecting Analyzer , Solar wind interaction with regolith , Energetic Neutral Atoms
Journal title
PLANETARY AND SPACE SCIENCE
Serial Year
2009
Journal title
PLANETARY AND SPACE SCIENCE
Record number
2309543
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