title: Uranium oligomerization in chloride-based high temperature melts: in situ XAS studies.
abstract: In situ EXAFS spectroscopic studies of uranium compounds in high temperature alkali chloride melts indicate the presence of oligomeric species. An investigation into UCl(3) and UCl(4) dissolved in LiCl reveals long range ordering of uranium atoms in the molten state which is not maintained on quenching. Studies of uranium dioxide dissolved in LiCl-KCl eutectic with HCl exhibit long range ordering in both molten and quenched states, and the EXAFS data can be modeled using multiple coordination shells.
authors.affiliation: Centre for Radiochemistry Research, Department of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
authors.forename: Anand I
authors.initials: AI
authors.lastname: Bhatt
authors.forename: Erwan
authors.initials: E
authors.lastname: du Fou de Kerdaniel
authors.forename: Hajime
authors.initials: H
authors.lastname: Kinoshita
authors.forename: Francis R
authors.initials: FR
authors.lastname: Livens
authors.forename: Iain
authors.initials: I
authors.lastname: May
authors.forename: Ilya B
authors.initials: IB
authors.lastname: Polovov
authors.forename: Clint A
authors.initials: CA
authors.lastname: Sharrad
authors.forename: Vladimir A
authors.initials: VA
authors.lastname: Volkovich
authors.forename: John M
authors.initials: JM
authors.lastname: Charnock
authors.forename: Robert G
authors.initials: RG
authors.lastname: Lewin