Figure 7
Sudden changes appearing in the intensity versus energy plots (sharp dips) in (a) the fluorescence spectra and (b) incident intensities I0 are monochromator glitches or from mirror tuning or detuning. About 90% of the glitches disappear after normalization. Remaining glitches can be due to uncompensated beam crashes, beam filling, motor slips and a change of I0 loading. Partially corrected or uncorrected glitches after normalization were removed by deleting the corresponding channels. (c) The fluorescence spectra after removing monochromator glitches. |