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Modellatom mit zwei Elektronen in jeweils einer Raumdimension in Wechselwirkung mit XUV- und IR-Laserfeldern

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons37854

Ding,  Thomas
Thomas Pfeifer - Independent Junior Research Group, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

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Bachelorarbeit_Ding.pdf
(Publisher version), 3MB

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Citation

Ding, T. (2011). Modellatom mit zwei Elektronen in jeweils einer Raumdimension in Wechselwirkung mit XUV- und IR-Laserfeldern. Bachelor Thesis, Ruprecht-Karls-Universität, Heidelberg, Germany.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-4637-B
Abstract
In this work a quantum mechanical model for the interaction of a two-electron atom with XUV- and intense IR-laserfields is described. The system is treated with full electron correlation via a repulsive electron-electron interaction. The eigenstates were determined numerically by solving the time-dependent Schrödinger equation on a spatial grid. The electron motion is limited to one dimension for each electron due to computation time restraints. Using a time-resolved Fourier analysis the Rydberg-Series of singly excited states and those of doubly excited states were identified. By means of XUV-laserpulses the two-electron atom was excited to autoionizing states and the typical asymmetric line shapes of Fano resonances were observed. Furthermore a computer experiment is presented, where the autoionization dynamics of doubly excited states in a perturbating few-cycle IR-field were followed in realtime. Broadening and inversion of Fano line shapes has been observed.