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Figure 6
Fitting solvent background (#4, Table 3[link]). Modelled attenuation of the background absorbers using the experimental geometry and respective densities. The path-length of two layers of silicone adhesive used on the Kapton windows was fitted, while attenuations of all other identified absorbers were in good agreement with their estimated values. An excellent fit was obtained for the solvent path-length required to determine the accuracy of the XAS from the solutions. Interestingly, the data could easily distinguish between errors of one component of the background path compared with another, despite all representing smooth and largely featureless curves. The slopes and curvatures are significantly different. The final XAS of the isomers were determined by dividing the attenuations [[{{\mu}/{\rho}}][\rho t]] by the path-length [[\rho t]_{\rm{SV}}]. This allows estimation of accurate uncertainty [\sigma_{\mu t}/[\rho t]_{\rm{SV}}] of the absolute XAS.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 22| Part 4| July 2015| Pages 1008-1021
https://doi.org/10.1107/S1600577515006190
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