Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5396950 | Journal of Electron Spectroscopy and Related Phenomena | 2007 | 6 Pages |
Abstract
Fast, 1âkeV electron-helium collisions performed in an intense (4Ã1012âW/cm2), non-resonant laser field were investigated realizing the first experiment for laser-assisted ionization. The resulting double- and triple-differential cross-sections for the single ionization show significant differences in comparison to the field-free cross-sections. Our quantum-mechanical calculation, using a First-Born approximation (FBA) to describe the collision and Volkov states for the continuum electrons, cannot explain the measured cross-sections.
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Authors
C. Höhr, A. Dorn, B. Najjari, D. Fischer, C.D. Schröter, J. Ullrich,