First observation of intra-5f fluorescence from an actinyl center: Np(VI) near-IR emission in Cs{sub 2}U(Np)O{sub 2}Cl{sub 4}
- Chemistry Division, Los Alamos National Laboratory, Post Office Box 1663 Mail Stop J565, Los Alamos, NM 87545-1663 (United States)
- Nuclear Materials and Technology Division, Los Alamos National Laboratory, Los Alamos, NM (United States)
Fluorescence from an excited 5f state of Np(VI) has been observed in the doped impurity system Cs{sub 2}U(Np)O{sub 2}Cl{sub 4}. This is the first intra-5f fluorescence transition that has been detected at room temperature in a condensed-phase system with an actinyl (An(VI)O{sub 2}{sup 2+}) core, and it is a rare example of fluorescence of any kind from non-uranyl ions of this type. The emission originates from an excited state approximately 6890cm{sup -1} above the ground state. Its emission spectrum and fluorescence lifetime at 295K will be discussed. Vibronic structure in the emission spectrum is assigned based on comparison with the detailed analysis of the absorption spectra published by Denning et al.
- OSTI ID:
- 20721769
- Journal Information:
- Journal of Solid State Chemistry, Vol. 178, Issue 2; Other Information: DOI: 10.1016/j.jssc.2004.07.049; PII: S0022-4596(04)00430-X; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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