Answer Happy

3. a) Explain how X-ray absorption spectroscopy can be used to gain information about a materials fine structure? a b) Fig. 1 shows pair distribution function or radial distribution function data for CaSiAIONF glasses. Using the data given in Table 1, assign the first three arrowed peaks in the black lined spectra to length scales associated with EXAFS effects (i.e. coordination lengths). c) What information would you expect to be able to get from electron energy loss spectroscopy which would confirm or augment that you suggested in part (a) of this question?
w 3 Relative intensity chun Hampshire-NF Tr Hampshire-N Tr1 Hampshire-0 Tr2 2 3 r(A) 4 5 Fig. 1 Pair distribution function or radial distribution function for Ca-Si-A1-O, Ca-Si-Al- O-N and Ca-Si-Al-O-N-F glasses obtained by Wakihara using glasses prepared at the University of Limerick (Hanifi, Pomeroy & Hampshire)