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Updated: Nov 2, 2025

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
All-Optical Three-Dimensional Electron Momentum Imaging
Emmanuel Orunesajo1, Gihan Basnayake1, Yasashri Ranathunga1
1Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States.
Abstract:
We report a new implementation of three-dimensional (3D) momentum imaging for electrons, employing a two-dimensional (2D) imaging detector and a silicon photomultiplier tube (siPMT). To achieve the necessary time resolution for 3D electron imaging, a poly(p-phenylene)-dye-based fast scintillator (Exalite 404) was used in the imaging detector instead of conventional phosphors. The system demonstrated an electron time-of-flight resolution comparable with that of electrical MCP pick-off (tens of picoseconds), while achieving an unprecedented dead time reduction (∼0.48 ns) when detecting two electrons.
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