Volume 228, 2021

Resolving multiphoton processes with high-order anisotropy ultrafast X-ray scattering

Abstract

We present the first results on experimentally measured ultrafast X-ray scattering of strongly driven molecular iodine and analysis of high-order anisotropic components of the scattering signal. We discuss the technical details of retrieving high fidelity high-order anisotropy components from the measured scattering data and outline a method to analyze such signals using Legendre decomposition. We describe how anisotropic motions can be extracted from the various Legendre orders using simulated anisotropic scattering signals and Fourier analysis. We implement the method on the measured signal and observe a multitude of dissociation and vibration motions simultaneously arising from various multiphoton transitions occurring in the sample. We use the anisotropic scattering information to disentangle the different processes and assign their dissociation velocities on the Angstrom and femtosecond scales de novo.

Graphical abstract: Resolving multiphoton processes with high-order anisotropy ultrafast X-ray scattering

Associated articles

Article information

Article type
Paper
Submitted
11 Nov 2020
Accepted
17 Dec 2020
First published
21 Dec 2020

Faraday Discuss., 2021,228, 123-138

Resolving multiphoton processes with high-order anisotropy ultrafast X-ray scattering

A. Natan, A. Schori, G. Owolabi, J. P. Cryan, J. M. Glownia and P. H. Bucksbaum, Faraday Discuss., 2021, 228, 123 DOI: 10.1039/D0FD00126K

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