Matches in SemOpenAlex for { <https://semopenalex.org/work/W2990505877> ?p ?o ?g. }
Showing items 1 to 91 of
91
with 100 items per page.
- W2990505877 abstract "The electronic energy levels of ${mathrm{U}}^{4+}$ in ZrSi${mathrm{O}}_{4}$ have been obtained from the absorption spectra of oriented single crystals. This host was chosen because of the relatively high (${D}_{2d}$) symmetry of the ${mathrm{Zr}}^{4+}$ site occupied by the ${mathrm{U}}^{4+}$ ion. Spectra were obtained at a number of temperatures between 4 and 300ifmmode^circelsetextdegreefi{}K. By means of polarization selection rules, electronic energy levels were identified according to their irreducible representations; then the Slater integrals ${F}_{k}$, the spin-orbit parameter ${ensuremath{zeta}}_{5f}$, and the crystal-field parameters were determined by a least-squares fit. Because of the large crystal field, it was necessary to diagonalize all these interactions within the $5{f}^{2}$ configuration. In all, 30 levels up to 24 000 ${mathrm{cm}}^{ensuremath{-}1}$ have been fitted to an average deviation of 110 ${mathrm{cm}}^{ensuremath{-}1}$ by adjusting nine parameters. The results in ${mathrm{cm}}^{ensuremath{-}1}$, are ${F}_{2}=185.3$, ${F}_{4}=37.1$, ${F}_{6}=3.67$, ${ensuremath{zeta}}_{5f}=1780$, $A_{2}^{}{}_{}{}^{0}〈{r}^{2}〉=ensuremath{-}349$, $A_{4}^{}{}_{}{}^{0}〈{r}^{4}〉=400$, $A_{4}^{}{}_{}{}^{4}〈{r}^{4}〉=770$, $A_{6}^{}{}_{}{}^{0}〈{r}_{6}〉=ensuremath{-}435$, and $A_{6}^{}{}_{}{}^{4}〈{r}_{6}〉=5.7$. The first four free-ion parameters are in good agreement with those determined for U$mathrm{Cl}_{6}^{}{}_{}{}^{=}$ complexes. The ratios of the crystal-field parameters show large deviations from those calculated on a point-charge model, presumably because of the contribution of the polarization of the ligands." @default.
- W2990505877 created "2019-12-05" @default.
- W2990505877 creator A5042860202 @default.
- W2990505877 creator A5087160773 @default.
- W2990505877 creator A5088571250 @default.
- W2990505877 date "1967-03-10" @default.
- W2990505877 modified "2023-09-26" @default.
- W2990505877 title "Absorption Spectrum ofU4+in Zircon (ZrSiO4)" @default.
- W2990505877 cites W1982072956 @default.
- W2990505877 cites W1982738703 @default.
- W2990505877 cites W1988726578 @default.
- W2990505877 cites W2005068009 @default.
- W2990505877 cites W2031466370 @default.
- W2990505877 cites W2032413989 @default.
- W2990505877 cites W2035072765 @default.
- W2990505877 cites W2043154369 @default.
- W2990505877 cites W2050504122 @default.
- W2990505877 cites W2055516727 @default.
- W2990505877 cites W2055907274 @default.
- W2990505877 cites W2076494068 @default.
- W2990505877 cites W2093972725 @default.
- W2990505877 cites W2132328420 @default.
- W2990505877 cites W2148578208 @default.
- W2990505877 cites W53159116 @default.
- W2990505877 doi "https://doi.org/10.1103/physrev.155.262" @default.
- W2990505877 hasPublicationYear "1967" @default.
- W2990505877 type Work @default.
- W2990505877 sameAs 2990505877 @default.
- W2990505877 citedByCount "66" @default.
- W2990505877 countsByYear W29905058772012 @default.
- W2990505877 countsByYear W29905058772013 @default.
- W2990505877 countsByYear W29905058772014 @default.
- W2990505877 countsByYear W29905058772016 @default.
- W2990505877 countsByYear W29905058772018 @default.
- W2990505877 countsByYear W29905058772020 @default.
- W2990505877 countsByYear W29905058772023 @default.
- W2990505877 crossrefType "journal-article" @default.
- W2990505877 hasAuthorship W2990505877A5042860202 @default.
- W2990505877 hasAuthorship W2990505877A5087160773 @default.
- W2990505877 hasAuthorship W2990505877A5088571250 @default.
- W2990505877 hasConcept C119824511 @default.
- W2990505877 hasConcept C121332964 @default.
- W2990505877 hasConcept C145148216 @default.
- W2990505877 hasConcept C184779094 @default.
- W2990505877 hasConcept C185592680 @default.
- W2990505877 hasConcept C186370098 @default.
- W2990505877 hasConcept C199360897 @default.
- W2990505877 hasConcept C2781285689 @default.
- W2990505877 hasConcept C41008148 @default.
- W2990505877 hasConcept C4839761 @default.
- W2990505877 hasConcept C62520636 @default.
- W2990505877 hasConcept C8010536 @default.
- W2990505877 hasConceptScore W2990505877C119824511 @default.
- W2990505877 hasConceptScore W2990505877C121332964 @default.
- W2990505877 hasConceptScore W2990505877C145148216 @default.
- W2990505877 hasConceptScore W2990505877C184779094 @default.
- W2990505877 hasConceptScore W2990505877C185592680 @default.
- W2990505877 hasConceptScore W2990505877C186370098 @default.
- W2990505877 hasConceptScore W2990505877C199360897 @default.
- W2990505877 hasConceptScore W2990505877C2781285689 @default.
- W2990505877 hasConceptScore W2990505877C41008148 @default.
- W2990505877 hasConceptScore W2990505877C4839761 @default.
- W2990505877 hasConceptScore W2990505877C62520636 @default.
- W2990505877 hasConceptScore W2990505877C8010536 @default.
- W2990505877 hasLocation W29905058771 @default.
- W2990505877 hasOpenAccess W2990505877 @default.
- W2990505877 hasPrimaryLocation W29905058771 @default.
- W2990505877 hasRelatedWork W1547954049 @default.
- W2990505877 hasRelatedWork W1564022199 @default.
- W2990505877 hasRelatedWork W1839775070 @default.
- W2990505877 hasRelatedWork W1962055747 @default.
- W2990505877 hasRelatedWork W1977279324 @default.
- W2990505877 hasRelatedWork W1984903330 @default.
- W2990505877 hasRelatedWork W1992105013 @default.
- W2990505877 hasRelatedWork W1993478031 @default.
- W2990505877 hasRelatedWork W2005068009 @default.
- W2990505877 hasRelatedWork W2012636347 @default.
- W2990505877 hasRelatedWork W2022716705 @default.
- W2990505877 hasRelatedWork W2030481018 @default.
- W2990505877 hasRelatedWork W2039962354 @default.
- W2990505877 hasRelatedWork W2043081750 @default.
- W2990505877 hasRelatedWork W2050504122 @default.
- W2990505877 hasRelatedWork W2059755823 @default.
- W2990505877 hasRelatedWork W2066406888 @default.
- W2990505877 hasRelatedWork W2093972725 @default.
- W2990505877 hasRelatedWork W2132328420 @default.
- W2990505877 hasRelatedWork W2342640905 @default.
- W2990505877 isParatext "false" @default.
- W2990505877 isRetracted "false" @default.
- W2990505877 magId "2990505877" @default.
- W2990505877 workType "article" @default.