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Topical Review: Extracting Molecular Frame Photoionization Dynamics from Experimental Data
  • Paul Hockett,
  • Varun Makhija
Paul Hockett

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Varun Makhija
University of Mary Washington
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Methods for experimental reconstruction of molecular frame (MF) photoionization dynamics, and related properties - specifically MF photoelectron angular distributions (PADs) and continuum density matrices - are outlined and discussed. General concepts are introduced for the non-expert reader, and experimental and theoretical techniques are further outlined in some depth. Particular focus is placed on a detailed example of numerical reconstruction techniques for matrix-element retrieval from time-domain experimental measurements making use of rotational-wavepackets (i.e. aligned frame measurements) - the ``bootstrapping to the MF" methodology - and a matrix-inversion technique for direct MF-PAD recovery. Ongoing resources for interested researchers are also introduced, including sample data, reconstruction codes (the Photoelectron Metrology Toolkit, written in python, and associated Quantum Metrology with Photoelectrons platform/ecosystem), and literature via online repositories; it is hoped these resources will be of ongoing use to the community.