Excitation of Lithium by Electron Impact Using the Glauber Theory

The Glauber approximation has been applied to calculate the excitation cross section for the $2s-2p$ transition in lithium by electron impact using the frozen-core approximation. The integrated inelastic cross section has been compared with other theoretical calculations and with the experimental data. With this frozen-core, effectively one-electron formulation of electron-lithium excitation, it is found that the Glauber approximation provides better agreement with experimental data than the Born approximation.