On a site-selective exafs experiment using optical emission |
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| Authors: | José Goulon Pascal Tola Marc Lemonnier Jeannette Dexpert-Ghys |
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| Institution: | E.R.A. (CNRS) No. 22, “Interactions moléculaires”, Université de Nancy I, B.P. 239, 54506 Vandoeuvre les Nancy Cedex, France;LURE (L.P.-CNRS), Université de Paris-Sud, Bâtiment 209C, 91405 Orsay, France;E.R.A. (CNRS) No. 22, “Interactions moléculaires”, Université de Nancy 1, B.P. 239, 54506 Vandoeuvre les Nancy Cedex, France;LURE (L.P.-CNRS), Université de Paris-Sud, Bâtiment 209C, 91405 Orsay, France;E.R. (CNRS) No. 60210, “Eléments de transition dans les solides”, 1 place A. Briand, 92190 Meudon - Belleuve, France |
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| Abstract: | X-ray-excited optical luminescence (XEOL) is known to offer an alternative detection scheme of EXAFS spectra. Although this secondary emission appears restricted to a rather limited number of systems, we show that it can afford, under appropriate circumstances, an interesting property of site selectivity. The case of a ZnO + ZnTPP mixture was chosen as an illustrative example. The relevant formulation of the phenomenon for powdered samples is developed and the requirements for site selectivity are discussed. |
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