Related Experiment Video
Updated: May 24, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
A momentum imaging microscope for dissociative electron attachment
H Adaniya1, D S Slaughter, T Osipov
1Lawrence Berkeley National Laboratory, Chemical Sciences, Berkeley, California 94720, USA.
Abstract:
We describe an experimental approach to image the three-dimensional (3D) momentum distribution of the negative ions arising from dissociative electron attachment (DEA). The experimental apparatus employs a low energy pulsed electron gun, an effusive gas source and a 4π solid-angle ion momentum imaging spectrometer consisting of a pulsed ion extraction field, an electrostatic lens, and a time- and position-sensitive detector. The time-of-flight and impact position of each negative ion are measured event by event in order to image the full 3D ion momentum sphere. The system performance is tested by measuring the anion momentum distributions from two DEA resonances, namely H(-) from H(2)O(-) ((2)B(1)) and O(-) from O(2)(-) ((2)Π(u)). The results are compared with existing experimental and theoretical data.
Related Concept Videos
Transmission Electron Microscopy
Overview of Electron Microscopy
Overview of Microscopy Techniques
Electron Microscope Tomography and Single-particle Reconstruction
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Scanning Electron Microscopy
Fundamental Principles
Accelerated...
Three-Dimensional Microscopy in Microbiology
