Imaging Internuclear Separation of H₂⁺ in Configuration Space: Reduced Dimensionality Model

We present a method for obtaining the internuclear separation of diatomic molecular ion H₂⁺ irradiated by attosecond-duration laser pulse, by computing the probability flux of wavefunction pattern of photoelectron in configuration space. In contrast to earlier means of attosecond-scale time-gating or taking ratio of image data in momentum space, our alternative is characterized by experimental feasibility. The numerical results of a reduced-dimensionality model on hydrogenic ions corroborated our method are obtained and can be generalized to more complex molecular systems for inferring bond length or bond angle information.