Abstract
Low-energy (< 20 eV) free electrons produced in above-threshold ionization have been scattered by an intense optical standing wave (the Kapitza-Dirac effect). At intensities of to W/ there is very high momentum transfer between the standing-wave "lattice" and the electrons (). In this regime, the scattering rate approaches the optical frequency, and the electron motion is most easily analyzed by classical mechanics.
- Received 26 May 1988
DOI:https://doi.org/10.1103/PhysRevLett.61.1182
©1988 American Physical Society