Channel-closing-induced resonances in the above-threshold ionization plateau
G. G. PaulusMax-Planck-Institut für Quantenoptik, 85748 Garching bei München, GermanyF. GrasbonMax-Planck-Institut für Quantenoptik, 85748 Garching bei München, GermanyH. WaltherMax-Planck-Institut für Quantenoptik, 85748 Garching bei München, GermanyR. KopoldMax-Planck-Institut für Quantenoptik, 85748 Garching bei München, GermanyW. BeckerMax-Planck-Institut für Quantenoptik, 85748 Garching bei München, Germany
2001en
ABI
Abstract
Multiphoton resonances with ponderomotively upshifted Rydberg states are believed to have dramatic effects on the plateau of high-order above-threshold ionization. For short pulses and intense laser fields, individual Rydberg states lose their physical significance. Under these conditions, on the basis of experimental and theoretical investigation of the dependence of the photoelectron spectra on the laser intensity, we propose that the observed effects can be largely understood in terms of the channel closings that are characteristic of a short-range model potential.
Identifiers
Citations and references
Cited by 20 references