Above threshold ionization beyond the high harmonic cutoff

doi:10.1103/PhysRevLett.70.1599

Above threshold ionization beyond the high harmonic cutoff

We present high sensitivity electron energy spectra for xenon in a strong 50 ps, 1.053 μみゅーm laser field. The above threshold ionization distribution is smoothly decreasing over the entire kinetic energy range (0-30 eV), with no abrupt changes in the slope. This is in direct contrast to the sharp cutoff observed in xenon optical harmonic generation spectra. Calculations using the single active electron approximation show excellent agreement with the observed electron distributions. These results directly address the unresolved relationship between the electron and photon emission from an atom in an intense field.

Publication:

Physical Review Letters

Pub Date:

March 1993

DOI:

10.1103/PhysRevLett.70.1599

Bibcode:

1993PhRvL..70.1599S

Keywords:

31.90.+s;
32.80.Fb;
32.80.Rm;
Other topics in the theory of the electronic structure of atoms and molecules;
Photoionization of atoms and ions;
Multiphoton ionization and excitation to highly excited states

NASA/ADS

Above threshold ionization beyond the high harmonic cutoff

Abstract