Collision dynamics in electron-capture processes with excitation

Abstract

We have measured the projectile scattering-angle dependency for various electronic final states for single-electron capture in $\text{p}+\text{He}$ and ${^{3}\text{H}\text{e}}^{+}+\text{He}$ collisions at incident energies between 60 and 630 keV/u. We find pronounced peak structures in the scattering-angle dependence of some of the ratios of different capture channels. We interpret this as experimental evidence that an excitation process of the target is caused by a transverse momentum transfer that leads to an additional projectile deflection.