A1 Refereed original research article in a scientific journal
Ion momentum mapping in photodissociation and Coulomb explosion events using ion time-of-flight analyzers
Authors: Kukk, Edwin
Publisher: IOP Publishing
Publishing place: BRISTOL
Publication year: 2025
Journal: Journal of Physics B: Atomic, Molecular and Optical Physics
Journal name in source: Journal of Physics B: Atomic, Molecular and Optical Physics
Journal acronym: J PHYS B-AT MOL OPT
Article number: 065101
Volume: 58
Issue: 6
Number of pages: 10
ISSN: 0953-4075
eISSN: 1361-6455
DOI: https://doi.org/10.1088/1361-6455/adaf87
Web address : https://doi.org/10.1088/1361-6455/adaf87
Abstract
Modern light sources such as free electron lasers allow tracking photoinduced events with unprecedented accuracy. Ion spectroscopy is a particularly useful tool, revealing for example momentum correlations in dissociation and Coulomb explosion patterns. Therefore, determining ion momenta and their relationship with the highest achievable accuracy is very valuable. Here, we develop a systematic approach to accurate ion momentum determination in Wiley-McLaren type ion time-of-flight spectrometers taking into account also field penetration effects. The developed analytical formulae at various levels of approximation are compared with ray tracing simulations and the effects are also illustrated in an experimental example.
Modern light sources such as free electron lasers allow tracking photoinduced events with unprecedented accuracy. Ion spectroscopy is a particularly useful tool, revealing for example momentum correlations in dissociation and Coulomb explosion patterns. Therefore, determining ion momenta and their relationship with the highest achievable accuracy is very valuable. Here, we develop a systematic approach to accurate ion momentum determination in Wiley-McLaren type ion time-of-flight spectrometers taking into account also field penetration effects. The developed analytical formulae at various levels of approximation are compared with ray tracing simulations and the effects are also illustrated in an experimental example.
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