Pulsed-Field Electron-Ion Imaging

  • Craig S. SlaterEmail author
Part of the Springer Theses book series (Springer Theses)


This chapter presents a new method of extracting and velocity-mapping both the ions and electrons resulting from photoionisation onto a single detector in each acquisition cycle. It is demonstrated that it is possible to maintain a high velocity resolution using this approach through the simultaneous imaging of the photoelectrons and photoions resulting from the (\(3+2\)) resonantly enhanced multi-photon ionisation of Br atoms produced following the photodissociation of Br\(_{2}\) at 446.41 nm. Pulsed ion extraction represents a substantial simplification in experimental design over conventional photoelectron-photoion coincidence (PEPICO) imaging spectrometers and is an important step towards performing coincidence experiments using a conventional ion imaging apparatus coupled with a fast imaging detector. The performance of the PImMS camera in this application is investigated, and a new method for the determination of the photofragment detection efficiencies based on a statistical fitting of the coincident photoelectron and photoion data is presented.


Rise Time Extraction Potential Extraction Field Pulse Extraction High Velocity Resolution 
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© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Physical and Theoretical Chemistry LaboratoryUniversity of OxfordOxfordUK

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