Extended Data Fig. 1: Attosecond soft-X-ray pulse spectrum and absorbance of silane.
From: Decoherence and revival in attosecond charge migration driven by non-adiabatic dynamics

The black dotted and solid lines are the measured probe-pulse spectra before and after the silane is introduced into the target gas cell, respectively. The absorbance of the unpumped silane gas can therefore be calculated and is shown as the purple line. As the CCD detector is made of silicon, its quantum efficiency drops by a factor of two above ~ 100 eV which is evident in the black lines. This effect is eliminated when calculating the absorbance and, therefore, does not affect the results shown in all other figures, including the main text.