Core-level transient absorption spectroscopy as a probe of electron hole relaxation in photoionized H+(H2O)n

Zheng Li, Mohamed Madjet, Oriol Vendrell, Robin Santra

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

There is fundamental interest in understanding the coupled nuclear and electronic dynamics associated with charge transfer processes in complex molecules and materials, which are often mediated by electron, electron hole or proton motion. With dramatic improvements in the techniques to generate extreme ultraviolet (XUV) and X-ray femtosecond pulses, it now becomes possible to trigger and probe these kinds of processes in real time. Here we study the dynamics of an electron hole created by photoionization in the valence shell of protonated water clusters H+(H2O)n. We demonstrate that the electron hole is strongly correlated with the protons forming the hydrogen bond network. We show that it is possible to probe key aspects of the valence electron hole dynamics and the coupled nuclear motion with femtosecond time resolution by resonantly exciting K-shell 1s electrons to fill the electron hole. This represents an opportunity for X-ray transient absorption spectroscopy.

Original languageEnglish
Pages (from-to)457-470
Number of pages14
JournalFaraday Discussions
Volume171
DOIs
Publication statusPublished - 1 Jan 2014

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Core levels
Absorption spectroscopy
absorption spectroscopy
Electrons
probes
valence
Protons
protons
X rays
Photoionization
photoionization
electrons
x rays
actuators
charge transfer
Ultrashort pulses
hydrogen bonds
Charge transfer
Hydrogen bonds
pulses

Cite this

Core-level transient absorption spectroscopy as a probe of electron hole relaxation in photoionized H+(H2O)n . / Li, Zheng; Madjet, Mohamed; Vendrell, Oriol; Santra, Robin.

In: Faraday Discussions, Vol. 171, 01.01.2014, p. 457-470.

Research output: Contribution to journalArticle

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