Our previous differential cross section measurements on argon were extended to impact energies of 120 eV and krypton was used as an alternative target gas. Some distinctive features were observed in the cross sections of the transfer and transfer-ionization reaction channel which await a theoretical explanation. The narrow feature at 45 • , observed for the transfer-ionization reaction Ar(e + , Ps e − )Ar 2+ at 75 eV, does not persist at 90 eV and could not be observed with krypton. Therefore, a connection to Thomas scattering (45 • is the Thomas angle for Ps formation) is not supported.