Electron Scattering Cross Sections from Thiazole for Impact Energies Ranging from 1 to 1000 eV

Area of Science:

• Atomic and Molecular Physics
• Quantum Chemistry

Background:

• Experimental data for total electron scattering cross sections (TCSs) are crucial for understanding electron-matter interactions.
• Previous experimental TCS data for the measured energy range are scarce, limiting validation of theoretical models.

Purpose of the Study:

• To experimentally measure TCSs for electron scattering in a specific energy range.
• To identify and characterize electron attachment resonances.
• To theoretically extend TCS calculations to higher energies and determine other cross sections.

Main Methods:

• High-resolution magnetically confined electron transmission spectroscopy was employed for measurements.
• Analysis of local maxima in TCS data identified electron attachment resonances.
• A screening-corrected additivity rule (IAM-SCAR + I) was used for theoretical calculations.

Main Results:

• Experimental TCS data were obtained with ±5% uncertainty for energies between 1-100 eV.
• Several electron attachment resonances, indicative of transient negative ion formation, were observed for the first time below 20 eV.
• Theoretical calculations extended TCS values up to 1000 eV and provided integral elastic, electronic excitation, and ionization cross sections with ~10% uncertainty.

Conclusions:

• The study presents novel experimental TCS data and identifies previously unobserved electron attachment resonances.
• The theoretical method successfully extended the applicability of TCS calculations and provided additional cross-section data.
• This work contributes significantly to the fundamental understanding of electron scattering processes.