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Title: Ion-momentum imaging of dissociative attachment of electrons to molecules

Journal Article · · Journal of Physics. B, Atomic, Molecular and Optical Physics
 [1];  [1];  [2];  [1];  [1]
  1. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Chemical Sciences
  2. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Chemical Sciences; Univ. of California, Davis, CA (United States). Dept. of Chemistry

Here, we present an overview of experiments and theory relevant to dissociative electron attachment studied by momentum imaging. We describe several key examples of characteristic transient anion dynamics in the form of small polyatomic electron-molecule systems. In each of these examples the so-called axial recoil approximation is found to break down due to correlation of the electronic and nuclear degrees of freedom of the transient anion. Guided by anion fragment momentum measurements and predictions of the electron scattering attachment probability in the molecular frame, we demonstrate that accurate predictions of the dissociation dynamics can be achieved without a detailed investigation of the surface topology of the relevant electronic states or the fragment trajectories on those surfaces.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1436602
Journal Information:
Journal of Physics. B, Atomic, Molecular and Optical Physics, Journal Name: Journal of Physics. B, Atomic, Molecular and Optical Physics Journal Issue: 22 Vol. 49; ISSN 0953-4075
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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