Electron-photon angular correlation in atomic physics

Igor Sokolov, Evgenii Dmitrievich Trifonov

Грызлова Елена Владимировна, A N Grum-Grzhimailo, S. Fritzsche +1 more

Angular correlations between two emitted photoelectrons in the sequential two-photon double ionization (TPDI) of atoms are theoretically considered. The general expression for the angular correlation function is analysed and some particular geometries of possible experiments are discussed. The concept of true angular correlations is introduced in contrast to the angular dependence of the two-electron emission from two uncorrelated ionization events. The case of a pure LS coupling description of the TPDI is considered in detail and compared with the general case. As an example, calculations of the angular correlation functions are performed and discussed for sequential TPDI from the 4p valence shell of krypton.

Stephen J. Smith, Gerd Leuchs

Грызлова Елена Владимировна, A N Grum-Grzhimailo, S. Fritzsche +1 more

Angular correlations between photoelectrons in sequential triple three-photon ionization of noble gas atoms are calculated and analyzed. Angular distributions of first-, second- and third-step electrons are obtained. Preferential experimental geometries to observe the angular correlations are proposed.

Грызлова Елена Владимировна, A N Grum-Grzhimailo, N M Kabachnik +1 more

A theoretical description of the sequential three-photon triple atomic ionization is given within a model of stepwise ionization with emphasis on the angular distributions and angular correlations of the emitted electrons. The theory is applied to the photoionization of neon atom at 90.5 eV, corresponding to the experiment performed at the Free electron LASer in Hamburg (FLASH) by A. Rouzee et al (Phys. Rev. A 83 031401(R) (2011)).

Alain Aspect