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

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.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-4637-B Version Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-4639-7
Genre: Thesis

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Bachelorarbeit_Ding.pdf (Publisher version), 3MB
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 Creators:
Ding, Thomas1, Author           
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1Thomas Pfeifer - Independent Junior Research Group, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society, ou_907555              

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 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.

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 Dates: 2011-03-282011
 Publication Status: Issued
 Pages: VIII, 45 S. : Ill., graph. Darst.
 Publishing info: Heidelberg, Germany : Ruprecht-Karls-Universität
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 Degree: Bachelor

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