Dynamics of the direct double ionization of helium by two XUV photons
(2008) Journal of Physics Conference Series — Vol. 141, n° 1, p. 12013 (2008)
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- Authors
- Abstract
- As a highly correlated process, direct two-photon double onization of helium represents a very challenging theoretical problem. A wide rande of computational methods have been used to evaluate generalized cross sections. However, despite considerable efforts, a quantitative agreement between all calculations has not been reached. In this contribution, we address several issues regarding the origin of the discrepancies in the total cross section and the behaviour of this cross section close to the sequential regime. Our ab initio calculations are based on the numerical solution of the time-dependent Schrödinger equation by means of a spectral method combined with Jacobi-matrix calculations. This method which, in principle, takes fully into account electron correlations, provides also a consistent physical picture of the double escape mechanism.
- Affiliations
Université de Bordeaux I-CNRS-CEA Centre des Lasers Intenses et Applications (CELIA)
Citations
Piraux, B., Foumouo, E., Antoine, P., & Bachau, H. (2008). Dynamics of the direct double ionization of helium by two XUV photons. Journal of Physics Conference Series, 141(1), 12013. https://doi.org/10.1088/1742-6596/141/1/012013 (Original work published 2008)