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Dynamical (e, 2e) studies using tetrahydrofuran as a DNA analog.

C J Colyer¹, S M Bellm, B Lohmann

¹ARC Centre of Excellence for Antimatter-Matter Studies, The University of Adelaide, Adelaide, South Australia 5005, Australia.

The Journal of Chemical Physics

|October 5, 2010

Summary

Electron-impact ionization of tetrahydrofuran was studied using the (e, 2e) technique. Experimental data were compared to the molecular three-body distorted wave model, aiding understanding of electron-driven molecular processes.

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Area of Science:

Atomic and Molecular Physics
Quantum Chemistry
Biophysics

Background:

Understanding electron-molecule interactions is crucial for various scientific fields.
Tetrahydrofuran (THF) is a significant molecule in chemistry and biology.
Electron-driven processes impact biological systems and material science.

Purpose of the Study:

To measure triple differential cross sections for electron-impact ionization of THF's outer valence orbital.
To compare experimental findings with theoretical predictions.
To enhance the understanding of electron-molecule collisions at a fundamental level.

Main Methods:

Utilized the (e, 2e) coincidence spectroscopy technique.
Employed coplanar asymmetric kinematics.

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Conducted measurements at an incident electron energy of 250 eV and ejected electron energy of 10 eV.

Main Results:

Experimental triple differential cross sections were obtained for electron-impact ionization of THF.
Comparison with the molecular three-body distorted wave (M3BWD) model provided insights into the ionization dynamics.
The study validated the M3BWD model for describing electron-molecule interactions.

Conclusions:

The study provides valuable experimental data for electron-impact ionization of tetrahydrofuran.
Results contribute to the theoretical understanding of electron-driven processes in molecules.
Findings are relevant for modeling energy deposition in biological tissues.