Abstract

In a beam foil experiment the angular distributions ≤ |±6°| of convoy electrons and of the protons were measured for ion energies between 100 and 300 keV. Al foils of 50 nm thickness were used. It was found that the number of emitted convoy electrons depends only weakly on the exit angle while the ion current decreases by more than two orders of magnitude with increasing scattering angle. By coincidence measurements for different emission directions a low correlation between ions and electrons was observed. Therefore, it was concluded that most of the convoy electrons are scattered away from the ion beam and do not form pairs with the ions.

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