Electron scattering cross section calculations for polar molecules over a broad energy range
1Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 113-bis, 28006 Madrid, Spain.
Summary
This study calculates electron scattering cross sections for HCN and pyrimidine molecules. The computational results align well with existing experimental data across a wide energy spectrum.
Area of Science:
- Chemical Physics
- Atomic and Molecular Physics
- Computational Chemistry
Background:
- Electron scattering studies are crucial for understanding molecular interactions.
- Accurate cross-section data is essential for various applications, including plasma physics and radiation chemistry.
- Polar molecules like HCN and pyrimidine present unique challenges in scattering calculations.
Purpose of the Study:
- To compute integral and differential electron scattering cross sections for HCN and pyrimidine.
- To cover a broad energy range from low to high energies (up to 10,000 eV).
- To validate computational methods by comparing with experimental data.
Main Methods:
- Employed the single-centre expansion (ePOLYSCAT) and R-matrix methods for low-energy scattering.
- Utilized a corrected independent-atom approximation (IAM-SCAR) for higher energies.
- Performed comprehensive computational analysis for electron-molecule interactions.
Main Results:
- Generated complete sets of integral electron scattering cross sections for both molecules.
- Obtained cross-section data across a wide energy range.
- Demonstrated good agreement between calculated and previously reported experimental results.
Conclusions:
- The applied computational methods provide reliable cross-section data for electron scattering by polar molecules.
- The study contributes valuable data for theoretical and experimental investigations in electron-molecule interactions.
- Validated computational approaches for electron scattering by HCN and pyrimidine.
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