Loriot, V.; Bañares, L.; de Nalda, R. Multidimensional Analysis of Time-Resolved Charged Particle Imaging Experiments. Appl. Sci.2018, 8, 1227.
Loriot, V.; Bañares, L.; de Nalda, R. Multidimensional Analysis of Time-Resolved Charged Particle Imaging Experiments. Appl. Sci. 2018, 8, 1227.
We present a tutorial to realize a multidimensional fitting procedure capable of extracting all the relevant information contained in a sequence of charged particle images acquired as a function of time in femtosecond pump-probe experiments. The images are reproduced using a 3D fitting method, which provides the velocity (or center-of-mass kinetic energy) and angular distributions contained in the images and their time evolution. A detailed example of the method is shown through the analysis of the time-resolved predissociation dynamics of CH3I on the B-band origin [Gitzinger et al., J. Chem. Phys. 133, 234313 (2010)]. We show that the multidimensional approach is essential for the analysis of complex images that contain several overlapping contributions where reduced dimensionality analyses cannot provide a reliable description of the features present in the image sequence. This methodology can be generalized to many types of multidimensional data analysis.
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