Abstract
The energy spectrum of electrons produced by multiphoton ionization of xenon atoms has been analyzed with a retarding potential technique. We have shown that the discrete absorption of photons above the six-photon ionization threshold was observable under specified conditions. A simple model based upon inverse bremsstrahlung gives a resonable agreement with the experiments.
- Received 29 January 1979
DOI:https://doi.org/10.1103/PhysRevLett.42.1127
©1979 American Physical Society
