6533b836fe1ef96bd12a1311
RESEARCH PRODUCT
The effect of dynamical screening on helium (e, 3e) differential cross-sections
Josephine P. BriggsMichael WalterJ R Götzsubject
PhysicsDynamic screeningHelium atomchemistry.chemical_elementElectronCondensed Matter PhysicsAtomic and Molecular Physics and Opticschemistry.chemical_compoundchemistryBasso continuoAtomic physicsBorn approximationElectron ionizationHeliumdescription
A simplified derivation of dynamic screening in the case of three Coulomb-interacting particles in the continuum is given and applied to describe the shapes of multi-differential cross-sections for the (e, 3e) process on the helium atom in which the incident fast electron is treated in first-order Born approximation. A very good agreement with experimental multi-differential cross-sections is obtained for two slow ejected electrons (specifically both electrons have 5 eV) but the strategy appears to be breaking down at intermediate emission energies.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-05-09 | Journal of Physics B: Atomic, Molecular and Optical Physics |