Figure 5
Comparison of the incident X-ray energy with (red squares) and without (black triangles) the feedback loop to the monochromator. (a) The absorption factor of the standard Se sample at the inflection point was measured at ∼1 min intervals over the lifetime of the beam. (b) The absorption edge of elemental Se, by which the recorded absorption factor was converted to the energy of the incident beam. (c) Energy fluctuation of the incident beam calculated based on (a) and (b). |