{
  "annotation_id": "fe4f820c-336a-4b36-853b-5eecf71c595e",
  "date_created": "2026-03-02T18:00:49.902000Z",
  "date_modified": "2026-03-02T18:00:49.902000Z",
  "file_hash": "a38e9658ef274d954f9df7db4948cd21a5fc868d5476b62fad7cdee7947945f4",
  "private": false,
  "record": {
    "abstract": "A new phasing algorithm has been used to determine the phases of diffuse\nelastic X-ray scattering from a non-periodic array of gold balls of 50 nm\ndiameter. Two-dimensional real-space images, showing the charge-density\ndistribution of the balls, have been reconstructed at 50 nm resolution from\ntransmission diffraction patterns recorded at 550 eV energy. The reconstructed\nimage fits well with scanning electron microscope (SEM) image of the same\nsample. The algorithm, which uses only the density modification portion of the\nSIR2002 program, is compared with the results obtained via the\nGerchberg-Saxton-Fienup HIO algorithm. In this way the relationship between\ndensity modification in crystallography and the HiO algorithm used in signal\nand image processing is elucidated.",
    "arxiv_id": "physics/0404073",
    "authors": [
      "B. Carrozzini",
      "G. L. Cascarano",
      "L. De Caro",
      "C. Giacovazzo",
      "S. Marchesini",
      "H. N. Chapman",
      "H. He",
      "M. R. Howells",
      "J. S. Wu",
      "U. Weierstall",
      "J. C. H. Spence"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1107/S0108767304012395",
    "journal_ref": "Acta Cryst. A60, 331-338 (2004).",
    "title": "Phasing diffuse scattering. Application of the SIR2002 algorithm to the   non-crystallographic phase problem",
    "url": "https://arxiv.org/abs/physics/0404073"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ce0cdf43-6c78-4fce-8b28-5e7891013b96",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}