Journal
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
Volume 122, Issue 1, Pages -Publisher
WILEY
DOI: 10.1002/qua.26815
Keywords
elastic scattering; electron; ion; multi-configuration wave functions; relativistic
Categories
Funding
- Ministry of Human Resources and Development (MHRD)
- SERB-DST, New Delhi
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This study investigates the elastic scattering of electrons from various ions using a model potential approach. By calculating and analyzing the potential energies, the differential cross sections obtained show prominent interference structures and good agreement with experimental results in selected energy ranges.
A study is presented on the elastic scattering of electrons from Nq+ (q = 1-3), Na+, Arq+ (q = 1-3, 7-8), Xeq+ (q = 2-6, 8) to understand the available experimental differential cross section results. A model potential approach has been utilized to describe the scattering process. The model potential includes the static, exchange, polarization and absorption potentials. The static potentialis obtained through the charge density calculated by obtaining ionic wave functions using multi-configuration Dirac-Fock (MCDF) approximation. Thereafter, the static potential is added to the suitable exchange, polarisation and absorption potentials to construct the spherically averaged complex optical potential. Using the obtained potential in the Dirac equations,these are solved with the partial wave phase shift analysis method and the differential cross sections are calculated. Results for different ions exhibit prominent interference structures in the energy versus cross section curves and show good agreement on comparison with the experimental results available in the selected energy ranges.
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