{
  "annotation_id": "404aa3ba-7e00-4b04-b533-cfabbea5bf72",
  "date_created": "2026-03-02T18:01:56.671000Z",
  "date_modified": "2026-03-02T18:01:56.671000Z",
  "file_hash": "8d08f330970239bac8eb6520a9512b79ecf0d2688388d5c2c32c4e37431a6679",
  "private": false,
  "record": {
    "abstract": "We present first experimental data on the high energy behavior of helium\natoms quantum reflecting from the nanoscopically disordered surface of a quartz\ncrystal. The use of the light, stable and inert He atom not only opens the\nunique possibility of measuring quantum reflectivity in the thusfar\ninaccessible limit of high energies, but also allows the determination of the\ngas-solid interaction potential. The specularly reflected intensity from the\nrough surface shows a change of 5 orders of magnitude within an incident\nangular range of less than 6 degrees. By separating out the influence of\nsurface disorder the quantum reflection coefficient for the smooth surface is\ndeduced. Firstly, the data confirm the high energy asymptotic behavior of the\nreflection, defined by the non-retarded attractive van der Waals potential. The\nexperiment shows very good agreement with our calculations covering the entire\nenergy region, in which also Casimir forces play a role. Parameters for the\ngas-solid interaction perfectly match those reported in literature in the\nvicinity of the potential minimum.",
    "arxiv_id": "quant-ph/0212076",
    "authors": [
      "V. Druzhinina",
      "M. DeKieviet"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.91.193202",
    "title": "Experimental Observation of Quantum Reflection in the High Energy Limit",
    "url": "https://arxiv.org/abs/quant-ph/0212076"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "dafd9889-bba6-43d9-bfd9-2ae996318566",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}