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

Adi Natan, Aviad Schori, Grace Owolabi, James P. Cryan, James M. Glownia, Philip H. Bucksbaum

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

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.

Original languageEnglish
Pages (from-to)123-138
Number of pages16
JournalFaraday Discussions
Volume228
DOIs
StatePublished - 27 May 2021
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2021 The Royal Society of Chemistry.

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