J. Phys. IV France 7 (1997) C2-233-C2-234
Elements of a Model Function for the Atomic Absorption Background in EXAFS SpectraI. Arčon1, 2 and A. Kodre1, 2
1 Jozef Stefan Institute, Jamova 39, P.P. 3000, 1001 Ljubljana, Slovenia
2 Dept. of Physics, University of Ljubljana, Slovenia
From the study of multielectron photoexcitations in atoms, a specific ansatz for the EXAFS atomic background is derived, to improve or replace the conventional spline approximation. The elements of the ansatz describe multielectron resonances, edges and shake-off features at proper theoretical energies. The approach is tested on the atomic background of Rb ion and on EXAFS-free absorption spectra of rubidium vapor and krypton.
© EDP Sciences 1997