I am planning XEOL measurements and I have a doubt. 
My system is Nd coordinated to Eosin, tetrabromofluorescein. I want to measure XEOL exciting on the Br K-edge (13.4keV) and the Nd L3-edge(6.2keV) and measure the emission spectra of the dye and the Nd. I just measured the emission of the Nd exciting at 530nm and it worked perfectly.
My question is, I have access to Nd K-edge, is it worthy to measure XEOL at the K-edge? I am in the time limit to request an extra shift.
I would appreciate some bibliography.
Best regards.