Laser-field-induced modifications of electron-transfer processes in ion-atom collisions

摘要

Electron transfer in the presence of a laser field is explored for the prototype collision system He2+-H(1s) on the basis of a quantum-mechanical calculation. At collision energies E(P)greater than or equal to2 keV/amu the capture probabilities are found to be conisderably enhanced or suppressed depending on the exact synchronization of the time-dependent projectile and laser interactions. At lower collision energies the total capture cross section is strongly enhanced irrespective of the relative phase between both fields. This enhancement should be directly observable in future experiments.