Multielectron Transitions Induced by Neutron Impact on Helium
| Autor: | Johannes Feist, Joachim Burgdörfer, Stefan Nagele, Matthias Liertzer |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Physics
Atomic Physics (physics.atom-ph) FOS: Physical sciences General Physics and Astronomy Electron Photoionization Neutron scattering 01 natural sciences Charged particle Spectral line Physics - Atomic Physics 010305 fluids & plasmas 13. Climate action Ionization Excited state 0103 physical sciences Physics::Atomic and Molecular Clusters Neutron Physics::Atomic Physics Atomic physics 010306 general physics |
| Zdroj: | Physical Review Letters. 109 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.109.013201 |
| Popis: | We explore excitation and ionization by neutron impact as a novel tool for the investigation of electron-electron correlations in helium. We present single and double ionization spectra calculated in accurate numerical ab-initio simulations for incoming neutrons with kinetic energies of up to 150 keV. The resulting electron spectra are found to be fundamentally different from photoioniza- tion or charged particle impact due to the intrinsic many-body character of the interaction. In particular, doubly excited resonances that are strongly suppressed in electron or photon impact become prominent. The ratio of double to single ionization is found to differ significantly from those of photon and charged particle impact. 5 pages, 5 figures |
| Databáze: | OpenAIRE |
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