Ionization of lithium by impact of fast bare ions - art. no. 012705

Double differential and total cross sections (DDCS and TCS) for ionization of Li by fast bare ions, namely, H+, He2+, N7+, and Ar18+, calculated withi n the continuum distorted wave eikonal-initial-state approximation employin g several static atomic potentials. Both the DDCS and the TCS cross section s, calculated using optimized potential method and X-alpha(alpha = 0.781) p otentials, are nearly equivalent, but one pseudopotential tested, already s uccessfully used in other branches of physics and chemistry, led to the wro ng angular dependence and could present serious problems for fast ion-atom collision study.