Phys. Rev. Lett. 81, 461–464 (1998)Atomic Scattering from Single Adsorbates: What Can We Learn from the Gas Phase?Received 11 February 1998; published in the issue dated 13 July 1998 Numerically exact studies of atomic scattering from single adsorbates on a flat surface are based on a soft potential closely approximating a hemisphere geometry, and on the ideal, hard and soft hemisphere models. The hard wall model cannot fit any of the five interference maxima of the angular distribution. In contrast, the soft hemisphere model perfectly predicts the first three interference peaks. Moreover, the first interference peak is revealed as the well-known gas phase rainbow arising from the van der Waals interaction between the scatterer and the adsorbate. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.461
DOI:
10.1103/PhysRevLett.81.461
PACS:
79.20.Rf, 34.10.+x, 34.50.Dy
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