Electron stripping and re-attachment at atomic centers using attosecond half-cycle pulses

Details Electron stripping and re-attachment at atomic centers using attosecond half-cycle pulses Electron stripping and re-attachment at atomic centers using attosecond half-cycle pulses

2008-04-29

arxiv.org/abs/0804.4610v1

Physics

Atomic Physics

Scientific paper

10.1103/PhysRevA.77.063416

We investigate the response of two three-body Coulomb systems when driven by attosecond half-cycle pulses: The hydrogen molecular ion and the helium atom. Using very short half-cycle pulses (HCPs) which effectively deliver ``kicks'' to the electrons, we first study how a carefully chosen sequence of HCPs can be used to control to which of one of the two fixed atomic centers the electron gets re-attached. Moving from one electron in two atomic centers to two electrons in one atomic center we then study the double ionization from the ground state of He by a sequence of attosecond time-scale HCPs, with each electron receiving effectively a ``kick'' from each HCP. We investigate how the net electric field of the sequence of HCPs affects the total and differential ionization probabilities.

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