8118 20260521112728.0 10.1103/wdx6-mrvm DOI SCART-2026-0142 Guichard, Pierre Fast Hydrogen Atom Diffraction through Monocrystalline Graphene 2025 We report fast atom diffraction through single-layer graphene using hydrogen atoms at kinetic energies from 150 to 1200 eV. High-resolution images reveal overlapping hexagonal patterns from coexisting monocrystalline domains. Time-of-flight tagging confirms negligible energy loss, making the method suitable for matter-wave interferometry. The diffraction is well described by the eikonal approximation, with accurate modeling requiring the full 3D interaction potential from density functional theory. Simpler models fail to reproduce the data, highlighting the exceptional sensitivity of diffraction patterns to atom-surface interactions and their potential for spectroscopic applications. NO Atomic Physics Quantum Mechanics Dochain, Arnaud Marion, Raphaël de Picquendaele, Pauline de Crombrugghe Lejeune, Nicolas Hackens, Benoît Hervieux, Paul-Antoine Urbain, Xavier Physical Review Letters 135 2025 26 263403 raphael.marion@ksb-orb.be https://link.aps.org/doi/10.1103/wdx6-mrvm published in REFERD