Language selection

Government of Canada / Gouvernement du Canada

Search

Complete 3D photoelectron momentum vector reconstruction from time-position charged particle imaging

DOIResolve DOI: https://doi.org/10.1088/1361-6455/ada652
AuthorSearch for: 1, 2; Search for: 1, 2ORCID identifier: https://orcid.org/0009-0005-8704-5088; Search for: 1, 2ORCID identifier: https://orcid.org/0009-0000-7262-6393; Search for: 2ORCID identifier: https://orcid.org/0009-0000-1323-7291; Search for: 2; Search for: 3; Search for: 4ORCID identifier: https://orcid.org/0000-0002-4975-4888; Search for: 1, 2, 5ORCID identifier: https://orcid.org/0000-0002-8447-3678
Affiliation
  1. University of Ottawa
  2. National Research Council Canada. Quantum and Nanotechnologies
  3. Helmholtz-Zentrum Berlin für Materialien und Energie
  4. University of Mary Washington
  5. University of Ottawa-NRC Joint Centre for Extreme Photonics
FunderSearch for: Canada Foundation for Innovation; Search for: Canada Research Chairs; Search for: National Research Council Canada; Search for: Natural Sciences and Engineering Research Council of Canada; Search for: NRC-uOttawa Joint Centre for Extreme Photonics
FormatText, Article
Subjectvelocity map imaging; photoelectron spectroscopy; photoelectron angular distribution; nitric oxide; 3D charged particle imaging; momentum vector reconstruction
Abstract
Many charged particle imaging techniques exist which directly measure, at a detector, the transverse position (x, y) and time-of-flight (t) of individual events in order to obtain a full set of 3D coordinates. Where curved velocity-mapping electric field lines are implemented, as in the case of 3D Velocity Map Imaging (3D VMI) and certain COLTRIMS (Cold Target Recoil Ion Momentum Spectroscopy) instruments, the general transformation of (x, y, t)-data into initial 3D recoil momentum vectors (px , py , pz ) is challenging and has not yet been fully addressed. Here we present a detailed and general method for this transformation, illustrated using our 3D VMI spectrometer and the well-known narrow-band photoionization of nitric oxide, for which we demonstrate quantitative agreement with reported values. We additionally show how to measure and correct (i) small errors in the laser polarization axis alignment at the interaction region of a 3D charged particle imaging spectrometer, and (ii) the spatial variation of gain on a microchannel plate (MCP) detector. Improvements to and characterization of our 3D VMI spectrometer yield an electron time-of-flight resolution of 72 ps across the full 40 mm MCP, in combination with pixel-level spatial resolution.
Publication date
PublisherIOP Publishing
Copyright statement
  • © 2025 IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.
In
  • Journal of Physics B: Atomic, Molecular and Optical Physics 58, no. 3, 035101 (24 January 2025): 1–15.
LanguageEnglish
Peer reviewedYes
Export citationExport as RIS
Report a correctionReport a correction (opens in a new tab)
Record identifier7f6a8243-50f7-4cf2-94f0-806a2a7364a5
Record created2026-01-23
Record modified2026-02-25

Page details

From:

Date modified: