Indistinguishability in Electron-Impact Excitation-Ionization of Helium
We present fully differential cross section (FDCS) calculations for electron-impact excitation-ionization of helium using the four-body distorted wave-exchange (4DWE) model. This model includes both the direct and exchange amplitudes, which account for the indistinguishability of the free electrons in the final state. The results of the 4DWE model are compared with absolute experimental results, and we find that the exchange amplitude has a minimal impact in determining the shape and magnitude of the FDCS.
A. L. Harris et al., "Indistinguishability in Electron-Impact Excitation-Ionization of Helium," Physical Review A - Atomic, Molecular, and Optical Physics, vol. 84, no. 5, American Physical Society (APS), Nov 2011.
The definitive version is available at https://doi.org/10.1103/PhysRevA.84.052718
Keywords and Phrases
Electron-impact; Final state; Free electron; Fully differential cross sections; Indistinguishability; Automobile drivers; Helium; Impact ionization
International Standard Serial Number (ISSN)
Article - Journal
© 2011 American Physical Society (APS), All rights reserved.