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Figure 6
(a) Laser on and laser off XAS spectra (solid line) at 200 ps and transient XAS spectra at 10 (blue dots) and 200 ps (magenta dots) along with a reference (gray dots). The left axis shows the normalized absorption; the right axis, to which the red circle and arrow refer, shows the number of fluorescence photons recorded per pulse. The transient signals were multiplied by five and relate to the right axis. (b) Time-dependent transient XAS signal recorded in a 1.5 eV window at the B feature, binned to 50 fs (black open circles), compared with data measured at the LCLS (solid black square) and SLS slicing source (blue open circle). The red curve represents a fit of the FemtoMAX data.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 5| September 2026|
https://doi.org/10.1107/S1600577526006363
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