Geodesic
Synchrotron radiation XANES spectra for oxygen and magnesium in MgO (periclase)
Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali, Série 8, Tome 82 (1988) no. 3, pp. 527-531 
Davoli, Ivan; Paris, Eleonora; Mottana, Annibale. Synchrotron radiation XANES spectra for oxygen and magnesium in MgO (periclase). Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali, Série 8, Tome 82 (1988) no. 3, pp. 527-531. http://geodesic.mathdoc.fr/item/RLINA_1988_8_82_3_a15/
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     title = {Synchrotron radiation {XANES} spectra for oxygen and magnesium in {MgO} (periclase)},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali},
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The X-ray absorption edges for O and Mg in MgO(periclase) have been measured using the GS line of PULS at ADONE synchrotron facility. With the available set-up, the edge for Mg (in the energy range 75 to 100 eV) is very blurred due to an exceedingly low signal to background ratio. However, the O edge (in the 520 to 580 eV range) is rather well resolved. The edge occurs at 543.5 eV and is followed by a main feature at 562.0 eV ( ± 0.5 eV). In addition, two weak features at 553.2 and $\approx$ 556 eV and a shoulder at $\approx$ 573 are present. XANES results are discussed on the basis of the known NaCl-type structure of periclase: the edge features are related to second-shell interaction effects.

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