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Stabilization of helium in intense xuv laser fields

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 Schrödinger equation from first principles. Although we observe a decrease in the total ionization yield at high field strengths, the...

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Published in:	Physical review letters 2010-04, Vol.104 (16), p.163002-163002, Article 163002
Main Authors:	Birkeland, T, Nepstad, R, Førre, M
Format:	Article
Language:	English
Subjects:	CHARGED PARTICLES CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CORRELATIONS DIFFERENTIAL EQUATIONS ELECTROMAGNETIC RADIATION ELECTRON CORRELATION ELECTRON-ELECTRON INTERACTIONS ELEMENTS EQUATIONS EXTREME ULTRAVIOLET RADIATION FLUIDS GASES HELIUM INTERACTIONS IONIZATION IONS LASER RADIATION LEPTON-LEPTON INTERACTIONS NONMETALS ONE-DIMENSIONAL CALCULATIONS PARTIAL DIFFERENTIAL EQUATIONS PARTICLE INTERACTIONS PULSES RADIATIONS RARE GASES SCHROEDINGER EQUATION STABILIZATION TIME DEPENDENCE ULTRAVIOLET RADIATION WAVE EQUATIONS YIELDS
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creator	Birkeland, T Nepstad, R Førre, M
description	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 Schrödinger 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.
doi_str_mv	10.1103/physrevlett.104.163002
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source	American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects	CHARGED PARTICLES CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CORRELATIONS DIFFERENTIAL EQUATIONS ELECTROMAGNETIC RADIATION ELECTRON CORRELATION ELECTRON-ELECTRON INTERACTIONS ELEMENTS EQUATIONS EXTREME ULTRAVIOLET RADIATION FLUIDS GASES HELIUM INTERACTIONS IONIZATION IONS LASER RADIATION LEPTON-LEPTON INTERACTIONS NONMETALS ONE-DIMENSIONAL CALCULATIONS PARTIAL DIFFERENTIAL EQUATIONS PARTICLE INTERACTIONS PULSES RADIATIONS RARE GASES SCHROEDINGER EQUATION STABILIZATION TIME DEPENDENCE ULTRAVIOLET RADIATION WAVE EQUATIONS YIELDS
title	Stabilization of helium in intense xuv laser fields
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