Single ionization of helium by 102 eV electron impact: three-dimensional images for electron emission
Creators
- 1. Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany)
- 2. ARC Centre for Antimatter-Matter Studies, Murdoch University, Perth, WA 6150 (Australia)
- 3. Laboratory of Atomic and Molecular Research, University of Missouri-Rolla, Rolla, MO 65409 (United States)
- 4. Department of Physics and Astronomy, Drake University, Des Moines, IA 50311 (United States)
Description
Single ionization of helium by 102 eV electron impact has been studied by measuring the momentum vectors of all final-state particles, i.e., two electrons and the He+ ion, with an advanced reaction microscope. Fully differential cross sections for asymmetric scattering geometry, which have been normalized to an absolute scale, have been obtained covering a large range of emission angles for the emitted low-energy (E ≤ 15 eV) electron and different scattering angles for the fast electron. Strong electron emission out of the projectile scattering plane is confirmed for electron impact, as was observed before for heavy-ion impact ionization. The data are compared with theoretical predictions from a three-Coulomb wavefunction model, first-order and second-order distorted-wave approaches, as well as a convergent close-coupling calculation
Availability note (English)
Available online at http://stacks.iop.org/0953-4075/39/4097/b6_20_008.pdf or at the Web site for the Journal of Physics. B, Atomic, Molecular and Optical Physics (ISSN 1361-6455) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0953-4075/39/4097/b6_20_008.pdf; http://www.iop.org/;
- DOI
- 10.1088/0953-4075/39/20/008;
- PII
- S0953-4075(06)28882-5;
Publishing Information
- Journal Title
- Journal of Physics. B, Atomic, Molecular and Optical Physics
- Journal Volume
- 39
- Journal Issue
- 20
- Journal Page Range
- p. 4097-4111
- ISSN
- 0953-4075
- CODEN
- JPAPEH
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38014529
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ASYMMETRY; COUPLING; DIFFERENTIAL CROSS SECTIONS; DISTORTED WAVE THEORY; ELECTRON EMISSION; ELECTRON-MOLECULE COLLISIONS; ELECTRONS; EV RANGE; GEOMETRY; HELIUM; HELIUM IONS; IONIZATION; SCATTERING; THREE-DIMENSIONAL CALCULATIONS; VECTORS; WAVE FUNCTIONS
- Descriptors DEC
- CHARGED PARTICLES; COLLISIONS; CROSS SECTIONS; ELECTRON COLLISIONS; ELEMENTARY PARTICLES; ELEMENTS; EMISSION; ENERGY RANGE; FERMIONS; FLUIDS; FUNCTIONS; GASES; IONS; LEPTONS; MATHEMATICS; MOLECULE COLLISIONS; NONMETALS; RARE GASES; TENSORS