Partial cross sections and correlation effects inB3+-He collisions

Total and partial cross sections are calculated for single-electron capture in ${\mathrm{B}}^{3+\mathrm{-}}$He collisions for projectile energies from 1.0 to 500 keV. Results for a one-electron model and a full two-electron treatment of the electronic wave function are compared. Both procedures compare well with experimental data for total cross sections. However, the two-electron model, which incorporates correlation and relaxation effects, compares most favorably, particularly when partial cross sections are considered. The total single-capture cross sections for higher velocities (v≊2–8 a.u.) decay in average according to a ${\mathit{v}}^{\mathrm{-}7.2}$ behavior, close to the ${\mathit{v}}^{\mathrm{-}7}$ behavior expected from the Bohr-Lindhard model. The discussion focuses on the role of correlation effects during the collision.