Triple differential cross section in (e, 2e) collisions for sodium in a coplanar symmetric geometry

► Our DWBA results with MSCEP better agree with the experiment than those with SASEP. ► This agreement is owing to further considering local momentum of bound electron. ► The variations of shape and ratio of two scattering peaks depend on impact energy. ► These variations show the competitions among different collision mechanisms. ► Small hump observed is due to interaction among electron and passive p electrons.