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Electron impact ionization dynamics of para-benzoquinone
1School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia.
The Journal of Chemical Physics
|November 3, 2016
Summary
This study reports triple differential cross sections for electron impact ionization of para-benzoquinone. Experimental results show marginal agreement with molecular 3-body distorted wave theory calculations.
Area of Science:
- Atomic and Molecular Physics
- Quantum Chemistry
- Electron-Matter Interactions
Background:
- Para-benzoquinone is a molecule with significant electronic properties.
- Understanding electron impact ionization is crucial for various fields.
- Previous studies have explored ionization of similar molecules.
Purpose of the Study:
- To experimentally determine triple differential cross sections (TDCS) for electron impact ionization of para-benzoquinone.
- To investigate the ionization of the four highest occupied molecular orbitals (HOMOs).
- To compare experimental findings with theoretical predictions.
Main Methods:
- Measurements were conducted using an asymmetric coplanar electron impact ionization geometry.
- Scattered electrons were detected at specific angles (-7.5°, -10.0°, -12.5°, -15.0°).
- Theoretical calculations were performed using the molecular 3-body distorted wave (M3BWDW) approximation.
Main Results:
- Triple differential cross sections (TDCS) for electron impact ionization of para-benzoquinone were reported.
- Experimental data exhibited marginal agreement with M3BWDW theoretical calculations.
- Calculated momentum profiles of ionized orbitals offered qualitative interpretation of TDCS angular distributions.
Conclusions:
- The study provides valuable experimental data for electron impact ionization of para-benzoquinone.
- The observed marginal agreement highlights areas for theoretical refinement.
- Momentum profiles offer insights into the nature of electron ionization processes in molecules.
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