Electron-impact cross sections and coherence parameters for the 6s2p1P1transition in neutral barium

Integral and differential cross sections and electron-impact coherence parameters have been calculated for the 6$s^2$ ${}_{}{}^1{}_{}{}^{}\mathrm{p}$ ${}_{}{}^1{}_{}{}^{}\mathrm{P}$ transition in neutral barium using both the distorted-wave approximation and first-order many-body theory. Target-state wave functions have been calculated using Hartree-Fock orbitals along with configuration-interaction and intermediate-coupling mixing. Results are presented for electron-impact energies of 5, 10, 15, 20, 30, 40, 60, 80, and 100 eV. The cross sections are compared to available experimental and theoretical results.