Coplanar symmetric (e, 2e) Cross Sections for Krypton 4s Ionization
Abstract
The triple-differential cross section for electron impact ionization of the 4s orbital of krypton (binding energy 27.5 eV) has been measured in coplanar symmetric kinematics. The experimental results are presented for outgoing electron energies of 85, 50, 20, 10 and 4 eV. The results are compared with two distorted wave Born approximation calculations; the influence of post-collision interaction (PCI) on the cross sections is investigated by incorporating correct final state boundary conditions in one of the calculations. The influence of PCI is found to be very important at the lower energies. Inclusion of the three-body final state boundary conditions improves the agreement between theory and experiment, but there are still significant discrepancies, indicating that additional physical effects (such as higher-order interactions) are important at lower energies.
Recommended Citation
M. A. Haynes et al., "Coplanar symmetric (e, 2e) Cross Sections for Krypton 4s Ionization," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 36, no. 5, pp. 811 - 815, Institute of Physics - IOP Publishing, Mar 2003.
The definitive version is available at https://doi.org/10.1088/0953-4075/36/5/302
Department(s)
Physics
Keywords and Phrases
Approximation theory; Binding energy; Boundary conditions; Electronic density of states; Electrons; Impact ionization; Kinematics; Krypton; Coplanar symmetric cross section; Atomic physics
International Standard Serial Number (ISSN)
0953-4075
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2003 Institute of Physics - IOP Publishing, All rights reserved.
Publication Date
01 Mar 2003