Fig. 1: TR-SFX data collection and dataset summary.

A Schematic representation of effects that could alter the laser power density transmitted to crystals in a TR-SFX experiment. The average path length in the crystals used was 7 μm. B Laser power range and X-ray Free Electron Lasers were used to derive the K-intermediate structures we compare in our study. All laser power densities have been calculated based on direct experimental parameters without taking uncertain factors into account. All datasets discussed in our study were recorded at a time delay where bR is expected to be in the K-intermediate. The next intermediate, L, appears later in the photocycle and becomes visible in datasets recorded at 290 ns¹¹.