Neutron diffraction studies of NaUO3.

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概要

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• Neutron diffraction studies have been made on a powdered NaUO<SUB>3</SUB> sample. It has been shown that an octahedron composed of six oxygen atoms around pentavalent uranium in this compound is distorted and four of six oxygen atoms are much closer to an uranium atom (U-O distance of 2.15 Å) than the other two (U-O distance of 2.24 Å). A unit of the UO<SUB>2</SUB><SUP>+</SUP> ion does not exist in the crystal, though the pentavalent uranium has been expected to be in the form of UO<SUB>2</SUB><SUP>+</SUP> as in the case of UO<SUB>2</SUB><SUP>2+</SUP> of a hexavalent uranium ion. A neutron diffraction pattern at temperature of liquid helium has shown no appreciable difference from that at tem-perature of liquid nitrogen.

• 一般社団法人 日本原子力学会の論文

著者

• Miyake Chie

  Department Of Nuclear Engineering Faculty Of Engineering Osaka University

• Imoto Shosuke

  Department Of Nuclear Engineering Faculty Of Engineering

• Kawano Shinji

  Research Reactor Institute Kyoto Uniersity

• ANADA Hiroyuki

  Department of Nuclear Engineering Osaka University

• KANAMARU Moriyoshi

  Department of Nuclear Engineering, Osaka University

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