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Updated: Sep 11, 2025

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Photoelectron momentum distributions by an inhomogeneous polarization-gated pulse
Abstract:
We theoretically investigate the photoelectron momentum distributions (PMDs) of the argon atom by using an inhomogeneous polarization-gated pulse. The numerical results show that the symmetry of the PMDs is disrupted and a vertical interference stripe appears as the inhomogeneity parameters increase. We illustrate that the interference mechanisms of these vertical interference stripes are different from traditional interference mechanisms, which are interference between direct electrons ionized in the same quarter-cycle. In addition, by analyzing the electron trajectories, we find that the breakdown of symmetry is due to the strong suppression of the positive deviation of electrons along the x-axis by the inhomogeneous PG pulse.
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