Determination of site occupancies of atoms with neibouring atomic numbers.

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  • 隣接原子番号をもつ原子の識別と席占有率（Ｐｂ／（Ｐｂ＋Ｂｉ））の決定
  • リンセツ ゲンシ バンゴウ オ モツ ゲンシ ノ シキベツ ト セキ センユウ

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Atoms with neibouring atomic numbers such as Pb and Bi cannot be distinguished with each other by the conventional X-ray. The crystal structure of lillianite (3PbS·Bi2S3) was determined by MoKα radiation, but the site occupancies in cation sites have been left unknown.<BR>By means of synchrotron radiation applied to the structure analysis of the material using a four-circle diff ractometer set up at the BL-10A of the Photon Factory, the usual manner of refinement based on the data including anomalous dispersion effect of both atoms has been successfully performed with the result of site occupancies.

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