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Volume 228, 2021

Ultraintense, ultrashort pulse X-ray scattering in small molecules

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Abstract

We examine X-ray scattering from an isolated organic molecule from the linear to nonlinear absorptive regime. In the nonlinear regime, we explore the importance of both the coherent and incoherent channels and observe the onset of nonlinear behavior as a function of pulse duration and energy. In the linear regime, we test the sensitivity of the scattering signal to molecular bonding and electronic correlation via calculations using the independent atom model (IAM), Hartree–Fock (HF) and density functional theory (DFT). Finally, we describe how coherent X-ray scattering can be used to directly visualize femtosecond charge transfer and dissociation within a single molecule undergoing X-ray multiphoton absorption.

Graphical abstract: Ultraintense, ultrashort pulse X-ray scattering in small molecules

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Submitted
14 Sep 2020
Accepted
23 Nov 2020
First published
12 Jan 2021

Faraday Discuss., 2021,228, 139-160
Article type
Paper

Ultraintense, ultrashort pulse X-ray scattering in small molecules

P. J. Ho, A. E. A. Fouda, K. Li, G. Doumy and L. Young, Faraday Discuss., 2021, 228, 139 DOI: 10.1039/D0FD00106F

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