Frédéric Allegrini installs IMAP-Hi conversion foils onto their testing plate.Conversion foils are very thin carbon foils used to ionize the neutral atoms that IMAP-Hi will measure. Converting neutrals to ions allows IMAP-Hi to then use electric fields to characterize them. In this picture, Frédéric Allegrini prepares 8 foils for testing. Credit: NASA/SwRI/Angèle Pontoni
Space PhysicsPrinceton, New Jersey 08544USA
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