Preprint Article Version 1 This version is not peer-reviewed

Multidimensional Analysis of Time-Resolved Charged Particle Imaging Experiments

Version 1 : Received: 13 June 2018 / Approved: 14 June 2018 / Online: 14 June 2018 (09:44:38 CEST)

How to cite: Loriot, V.; Bañares, L.; de Nalda, R. Multidimensional Analysis of Time-Resolved Charged Particle Imaging Experiments. Preprints 2018, 2018060228 (doi: 10.20944/preprints201806.0228.v1). Loriot, V.; Bañares, L.; de Nalda, R. Multidimensional Analysis of Time-Resolved Charged Particle Imaging Experiments. Preprints 2018, 2018060228 (doi: 10.20944/preprints201806.0228.v1).

Abstract

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.

Subject Areas

femtochemistry; VMI (velocity map imaging); multidimensional analysis

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