Article ID Journal Published Year Pages File Type
1686215 Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 2011 4 Pages PDF
Abstract

The statistical distributions of the number of simultaneously forward-emitted secondary electrons (SEs) from a thin carbon foil have been measured with H0 and H+ projectiles of 0.5–3.5 MeV in coincidence with the foil-transmitted protons, irrespective of projectile incident charge state. From these results, the probabilities of the simultaneous emission of nn electrons and the SE yields by loss electrons have been evaluated. At energies of 2.5–3.5 MeV, the obtained emission probabilities and the SE yields induced by loss electrons are larger than the corresponding ones by protons of the same velocity. Furthermore, the material parameter is found to be almost constant and is slightly larger than that for the protons. On the other hand, the forward SE yields by loss electrons is decreasing to zero with decreasing the incident energy. This behavior is consistent with the range-energy relation of electrons in carbon.

Related Topics
Physical Sciences and Engineering Materials Science Surfaces, Coatings and Films
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