Stabilization of Helium in Intense xuv Laser Fields

Autor:	Morten Førre, T. Birkeland, Raymond Nepstad
Rok vydání:	2010
Předmět:	Physics Electronic correlation Double ionization General Physics and Astronomy chemistry.chemical_element Electron Laser law.invention Ion chemistry law Ionization Extreme ultraviolet Physics::Atomic Physics Atomic physics Helium
Zdroj:	Physical Review Letters. 104
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.104.163002
Popis:	We investigate the impact of electron-electron correlation on the ionization dynamics of helium in intense, high-frequency laser fields by solving the time-dependent Schr\"odinger equation from first principles. Although we observe a decrease in the total ionization yield at high field strengths, the hallmark of atomic stabilization, the repulsion between the electrons has a detrimental effect on the degree of stabilization, in particular for short pulses. Investigation of the ion channel yields reveals that the double ionization process is less prone to two-electron effects, and consequently exhibits the most distinct signature of stabilization. We also find that commonly used one-dimensional models tend to overestimate the effect of correlation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1252100ab95788122f11e17e549eb0e https://doi.org/10.1103/physrevlett.104.163002 Zobrazit plný text záznamu