Abstract:Measurements of the circular polarization of Balmer-u radiation emitted by excited hydrogen atoms, following the transmission of (20 -50)-keV protons through thin, tilted amorphous carbon foils, exhibit markedly unexpected behavior as a function of exposure of the foil to the proton beam. Specifically, the circular polarization changes from an initially well understood tilt-angle dependence to a behavior which, for low tilt angles, gives the opposite handedness of circular polarization from that predicted. In … Show more
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