Effect of the chemical state of uranium atom on the energy of spin-orbital splitting of its inner orbitals
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| 024 | 7 | 0 | |a 10.1524/ract.92.2.73.27465 |2 doi |
| 035 | |a (NATIONALLICENCE)gruyter-10.1524/ract.92.2.73.27465 | ||
| 245 | 0 | 0 | |a Effect of the chemical state of uranium atom on the energy of spin-orbital splitting of its inner orbitals |h [Elektronische Daten] |c [Yuri F. Batrakov, Andrey G. Krivitsky, Oleg V. Pospelov, Elena V. Puchkova] |
| 520 | 3 | |a Chemical shifts (ChSh) of nine emission lines of the uranium L-series in uranium oxides UO2+x (x=0-1) with respect to UO2 were studied by using a precise crystal-diffraction X-ray spectrometer. ChSh of Lα1,α2 uranium and thorium lines in solid solutions yUO2·(1-y )ThO2 (y=0:1) were measured with respect to UO2 and ThO2, respectively. The changes in energy of spin-orbital splitting (SOS) — Δδnl± of inner nl-orbitals of the uranium atom were calculated from the data of ChSh of spin-doublet lines. For UO2+x oxides, a linear decrease in Δδnl± values with increasing degree of uranium oxidation was found. Sign inversion of Δδnl± for uranium levels was found on passing to solid solutions. No change in the SOS energy of inner thorium levels was detected. The values of Δδnl± were found to correlate with the experimental values of the effective magnetic moment of uranium in oxides. On the basis of the comparison of experimental Δδnl± values with Dirac-Hartree-Fock atomic calculations, it was concluded that the observed variations in Δδnl± values are due to the redistribution of electron and spin density between the 5f7/2- and 5f5/2-levels of the fine structure of the uranium atom without changes in atomic charge state. On the basis of the hypothesis of intraatomic relativistic U5f7/2↔U5f5/2 transition, a model of paramagnetic moment formation on the uranium atom in uranium dioxide was proposed. | |
| 540 | |a © 2004 Oldenbourg Wissenschaftsverlag GmbH | ||
| 690 | 7 | |a Laboratory techniques, experiments |2 nationallicence | |
| 690 | 7 | |a Analytical chemistry |2 nationallicence | |
| 690 | 7 | |a Inorganic chemistry |2 nationallicence | |
| 700 | 1 | |a Batrakov |D Yuri F. |4 aut | |
| 700 | 1 | |a Krivitsky |D Andrey G. |4 aut | |
| 700 | 1 | |a Pospelov |D Oleg V. |4 aut | |
| 700 | 1 | |a Puchkova |D Elena V. |4 aut | |
| 773 | 0 | |t Radiochimica Acta/International journal for chemical aspects of nuclear science and technology |d Oldenbourg Wissenschaftsverlag GmbH |g 92/2/2004(2004-02-01), 73-80 |x 0033-8230 |q 92:2/2004<73 |1 2004 |2 92 |o ract | |
| 856 | 4 | 0 | |u https://doi.org/10.1524/ract.92.2.73.27465 |q text/html |z Onlinezugriff via DOI |
| 908 | |D 1 |a research article |2 jats | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1524/ract.92.2.73.27465 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Batrakov |D Yuri F. |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Krivitsky |D Andrey G. |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Pospelov |D Oleg V. |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Puchkova |D Elena V. |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Radiochimica Acta/International journal for chemical aspects of nuclear science and technology |d Oldenbourg Wissenschaftsverlag GmbH |g 92/2/2004(2004-02-01), 73-80 |x 0033-8230 |q 92:2/2004<73 |1 2004 |2 92 |o ract | ||
| 900 | 7 | |b CC0 |u http://creativecommons.org/publicdomain/zero/1.0 |2 nationallicence | |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-gruyter | ||