Deviation of the binary encounter electron energy from simple conservation laws in ion-atom and in ion-solid collisions

Kroneberger, K.; Kuzel, M.; Maier, Robert R. J.; Schosnig, M.; Fiedler, C.; Tobisch, M.; Jung, Matthias; Suárez, S.; Groeneveld, K. O.

doi:10.1016/0168-583x(94)95679-0

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…Therefore, the observed distribution of BEE at fixed angle is not a δ-function as described by equation ( 1), but a distribution centred on v BE which reflects the initial onedimensional momentum distribution of the bound electrons of the target atom (projected onto the axis of the projectile trajectory), called the 'Compton profile' (Bell et al 1983, Bell andBöckl 1984). Both the momentum distribution and the binding energy cause a slight shift of the BEE peak (Kroneberger et al 1994).…”

Section: Introductionmentioning

confidence: 99%

Solid state effects in binary-encounter electron emission from collisions with C, Al, Cu and Au foils

Rothard

Jakubaßa-Amundsen

Billebaud

1998

J. Phys. B: At. Mol. Opt. Phys.

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We have studied binary-encounter electron ejection from thin solid foils (C, Al, Cu, Au) with highly charged swift heavy Ar 17+ ions at 13.6 MeV u −1 both experimentally and theoretically. The theory, based on the electron impact approximation describes the shape and the angular dependence well for very thin targets only (for example C less than 260 Å). For thicker targets, solid state effects (in particular, electron transport) influence the shape of the binary-encounter electron peak initially given by the target atom Compton profile. Such effects have to be taken into account in atomic collision experiments even if single-collision conditions for the primary interaction (e.g. ionization) are fulfilled. Not only may the electronic structure be different for free atoms and atoms bound in solids, but also the observable spectra of, for example, electrons may be different from the primary ones due to transport effects in condensed matter.

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Section: Introductionmentioning

confidence: 99%