Origin of Species Dependence of High-Energy Plateau Photoelectron Spectra
We analysed the energy and momentum distributions of high-energy 'plateau' photoelectrons. These electrons, with energies above 4Up (Up is the ponderomotive energy), have been understood qualitatively as due to the backscattering of laser-induced returning electrons by the target ion. Here, we establish a quantitative rescattering (QRS) theory to show that the species and laser-intensity dependence of the 'flatness' of the plateau electrons is entirely determined by the energy and angular dependence of the elastic scattering cross sections between target ions with free electrons. This accurate QRS theory can be used to obtain energy and momentum distributions of plateau electrons without the need of solving the time-dependent Schrödinger equation.
Z. Chen et al., "Origin of Species Dependence of High-Energy Plateau Photoelectron Spectra," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 42, no. 6, IOP Publishing Ltd., Mar 2009.
The definitive version is available at https://doi.org/10.1088/0953-4075/42/6/061001
Keywords and Phrases
Atoms; Laser Theory; Photoelectron Spectroscopy; Photoionization; Photons, Angular Dependences; Dinger Equations; Elastic Scattering Cross Sections; Free Electrons; High Energies; Intensity Dependences; Laser-Induced; Momentum Distributions; Photoelectron Spectrum; Ponderomotive Energies; Rescattering; Target Ions; Time Dependents, Electrons
International Standard Serial Number (ISSN)
Article - Journal
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