Systematic trends in the237neptunium Mössbauer isomer shift: Overlap of IV,V and VI neptunium oxidation states and correlation between isomer shift and crystal structure |
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| Authors: | J Jové A Cousson H Abazli A Tabuteau T Thévenin M Pagès |
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| Institution: | (1) Institut Curie, Section de Physique et Chimie, Physicochimie des Eléments Transuraniens (UA 448 CNRS), 11 rue Pierre et Marie Curie, F-75231 Paris Cedex 05, France |
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| Abstract: | The influence of the neptunium ion environment on the237Np Mössbauer isomer shifts has been studied in various metal coordination complexes: fluorides, oxides, oxide fluorides and polycarboxylates. A linear dependence between the isomer shift and the mean neptunium-ligand distance in a series of hexavalent Np compounds has been evidenced and the feasibility of overlapped isomer shift areas, namely Np(IV), Np(V) and Np(VI) has been established. |
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