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- W4221161429 abstract "Scattering of a tightly focused electron beam by an atom forms one of the bases of modern electron microscopy. A fundamental symmetry breaking occurs when the target atom is displaced from the beam center. This displacement results in an asymmetry in the angular distribution of the scattered electrons. Here we propose a concept to control the sign and magnitude of the asymmetry by shaping the incident high-energy electron wave packet in momentum space on the atto- to picosecond time scale. The shaping controls the ultrafast real-space dynamics of the wave packet, shifting the balance between two competing contributions of the impact-parameter-dependent quantum interference and the momentum distribution of the wave packet on the target. We find a strong sensitivity of the scattering on the wave packet properties, an effect that opens promising new avenues for ultrafast electron microscopy." @default.
- W4221161429 created "2022-04-03" @default.
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- W4221161429 date "2022-03-24" @default.
- W4221161429 modified "2023-09-26" @default.
- W4221161429 title "Scattering-asymmetry control with ultrafast electron wave packet shaping" @default.
- W4221161429 doi "https://doi.org/10.48550/arxiv.2203.13425" @default.
- W4221161429 hasPublicationYear "2022" @default.
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