K. Kroneberger et al., DEVIATION OF THE BINARY ENCOUNTER ELECTRON-ENERGY FROM SIMPLE CONSERVATION-LAWS IN ION-ATOM AND IN ION-SOLID COLLISIONS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 93(2), 1994, pp. 142-148
We have measured electron energy spectra from fast (0.4-2.0 MeV/u) lig
ht projectiles (H+, He+, H-2+, H-3+, H-0) impinging on gaseous (He, Ar
and Kr) and solid (C, Cu, Au, 600 angstrom) targets under observation
angles of O-degrees less-than-or-equal-to THETA less-than-or-equal-to
50-degrees and THETA = 110-degrees, 120-degrees, 180-degrees. Major i
nterest was directed upon the position of the binary encounter and ele
ctron loss peaks, which are commonly assumed to follow simple kinemati
cs. However, our measurements confirm recent results which show that t
he peaks are significantly shifted towards lower energies. For compari
son we calculated double differential electron emission cross sections
with different theoretical approaches.