General theory of photoexcitation induced photoelectron circular dichroism
arXiv:1802.08662 · doi:10.1063/1.5040476
Abstract
The photoionization of chiral molecules prepared in a coherent superposition of excited states can give access to the underlying chiral coherent dynamics in a procedure known as photoexcitation induced photoelectron circular dichroism (PXECD). This exclusive dependence on coherence can also be seen in a different part of the angular spectrum, where it is not contingent on the chirality of the molecule, thus allowing extension of PXECD's sensitivity to tracking coherence to non-chiral molecules. Here we present a general theory of PXECD based on angular momentum algebra and derive explicit expressions for all pertinent asymmetry parameters which arise for arbitrary polarisation of pump and probe pulses. The theory is developed in a way that clearly and simply separates chiral and non-chiral contributions to the photoelectron angular distribution, and also demonstrates how PXECD and PECD-type contributions, which may be distinguished by whether pump or ionizing probe enables chiral response, are mixed when arbitrary polarization is used.
References in corpus (5)
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- Generalized perspective on chiral measurements without magnetic interactions
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Cited by in corpus (5)
- Highly selective chiral discrimination in high harmonic generation by dynamical symmetry breaking spectroscopy
- Molecular chirality and its monitoring by ultrafast X-ray pulses
- Probing molecular chirality via laser-induced electronic fluxes
- Strong chiral dichroism in above threshold ionization and ionization rates from locally-chiral light
- Unravelling inter-channel quantum interference in below-threshold nonsequential double ionization with statistical measures