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Dispersion‐equation approach to obtaining complex optical potentials for electron scattering
Author(s) -
Valone Steven M.,
Thirumalai Devarajan,
Truhlar Donald G.
Publication year - 2009
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560200836
Subject(s) - scattering , electron , inelastic scattering , dispersion relation , polarization (electrochemistry) , dispersion (optics) , physics , mott scattering , electron scattering , range (aeronautics) , elastic scattering , light scattering , computational physics , atomic physics , optics , chemistry , materials science , quantum mechanics , small angle neutron scattering , neutron scattering , composite material
The absorption part of a local optical potential for electron‐He scattering is obtained from an energy‐dependent polarization potential by numerically solving the dispersion relation relating the real and imaginary parts of the optical potential. The resulting optical model, with no empirical parameters, yields reasonably accurate total scattering cross sections for elastic plus inelastic scattering at impact energies in the 30–100 eV range.