Classical Aspects in Above-Threshold Ionization with a Midinfrared Strong Laser Field
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Lin, Z.
Wu, M.
Kang, H.
Liu, H.
Liu, X.
Chen, J.
Liu, J.
He, X.
Chen, S.
Xiong, H.
Guo, L.
Xu, H.
Fu, Y.
Cheng, Ya
Xu, Zhizhan
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Abstract
We present high resolution photoelectron energy spectra of noble gas atoms from high intensity above-threshold ionization (ATI) at midinfrared wavelengths. An unexpected structure at the very low-energy portion of the spectra, in striking contrast to the prediction of the simple-man theory, has been revealed. A semiclassical model calculation is able to reproduce the experimental feature and suggests the prominent role of the Coulomb interaction of the outgoing electron with the parent ion in producing the peculiar structure in long wavelength ATI spectra.
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Physical Review Letters
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103
Issue
9
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Atomic and Molecular Physics
Nonlinear Optics and Spectroscopy
Mathematical Sciences
Physical Sciences
Engineering