Two-photon above-threshold ionization of atoms

Giovanni P. Arrighini, N. Durante, Carla Guidotti

Adila Dodhy, R. N. Compton, John A. D. Stockdale

Photoelectron angular distributions have been measured for nonresonant two-photon ionization of cesium and rubidium atoms just above the ionization threshold. The photoelectron energies ranged from 25 to 100 meV. The results are compared with theoretical estimates based on nonrelativistic atomic wave functions. Initial results are also presented for above-threshold ionization in cesium.

Giovanni P. Arrighini, Carla Guidotti, N. Durante

Alexander V. Glushkov, О. Yu. Khetselius, Andrey V. Loboda +1 more

A P Jayadevan, R. B. Thayyullathil

An alternative method is presented for the evaluation of the two-photon ionization transition amplitude and transition rates of atomic hydrogen in the ground state above the one-photon ionization threshold. In this approach it is straightforward to calculate the angular distribution of the emitted electrons. These angular distributions are plotted and calculated transition rates are compared with the previously reported results.

L. F. Vitushkin, А. И. Михайлов