Figure 3
The experimental concept for investigating ultrafast charge transfer processes in CH3I. An 800 nm NIR pulse dissociates the molecule. The X-ray pulse arrives after a certain delay, and thus molecular separation, and creates charge predominantly at the I atom. At short delays (a), the charge is shared between the two fragments. In the intermediate regime (b), the charge distribution between the fragments depends on the interatomic distance. At long delays (c), the interatomic distance is too large and charge transfer becomes negligible. Figure reprinted with permission from Erk et al. (2014). |