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| 001 | 612496 | ||
| 005 | 20240731211439.0 | ||
| 024 | 7 | _ | |a 10.11588/HEIDOK.00035166 |2 doi |
| 024 | 7 | _ | |a urn:nbn:de:bsz:16-heidok-351662 |2 URN |
| 037 | _ | _ | |a PUBDB-2024-05349 |
| 041 | _ | _ | |a English |
| 100 | 1 | _ | |a Magunia, Alexander |0 P:(DE-H253)PIP1029644 |b 0 |e Corresponding author |g male |
| 245 | _ | _ | |a Time-and-Energy–Resolved Electron Dynamics in Atoms and Molecules with Intense Short-Wavelength Light |f 2021-07-19 - 2024-07-19 |
| 260 | _ | _ | |c 2024 |b Heidelberg University Library |
| 300 | _ | _ | |a 136 |
| 336 | 7 | _ | |a Output Types/Dissertation |2 DataCite |
| 336 | 7 | _ | |a DISSERTATION |2 ORCID |
| 336 | 7 | _ | |a PHDTHESIS |2 BibTeX |
| 336 | 7 | _ | |a Thesis |0 2 |2 EndNote |
| 336 | 7 | _ | |a Dissertation / PhD Thesis |b phd |m phd |0 PUB:(DE-HGF)11 |s 1722414954_2787637 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a doctoralThesis |2 DRIVER |
| 502 | _ | _ | |a Dissertation, Heidelberg University, 2024 |c Heidelberg University |b Dissertation |d 2024 |o 2024-07-19 |
| 520 | _ | _ | |a This thesis investigates the interaction of ultrashort, extreme-ultraviolet (XUV) and soft x-ray laser pulses with atoms and molecules in the gas phase. In total, the subject is explored from four different perspectives, which are all based on the short- lived–coherent electronic responses to the laser pulses, and measured with transient absorption spectroscopy. First, a theoretical study reveals how transient energy shifts of electronic dressed states in atoms driven by an intense XUV Free-Electron Laser (FEL) lead to temporal dipole phase shifts and absorption-line changes. Second, a follow-up study investigates the electronic-population Rabi-cycles corresponding to the absorption-line changes of the first study. A convolutional neural network is employed to reconstruct the temporal population dynamics from the simulated spectral absorption modifications. The inversion from an absorption to an emission line is described and a potential experimental demonstration in helium is discussed. Third, dense gas targets enable amplification of the otherwise improbable, non-linear process of stimulated resonant inelastic x-ray scattering (RIXS), as well as x-ray FEL propagation-based spatial-spectral reshaping. To this end, a new experimental setup is built and utilized in an x-ray FEL driven RIXS experiment in dense neon gas. Fourth, a novel experiment combining XUV pulses from high-order harmonic generation (HHG) and XUV-FEL pulses is demonstrated by time-resolving a photochemical reaction in molecular oxygen. An FEL pulse initiates coupled nuclear-electronic dissociation pathways from molecular oxygen ions, which are time-resolved on femto- and picosecond time scales by identifying the reaction products in the time-delayed HHG absorption spectra. A FEL-photon-energy–resolved study of the fragments is performed to compare findings from absorption spectroscopy with kinetic energy release spectra recorded in parallel with a reaction microscope. |
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| 588 | _ | _ | |a Dataset connected to DataCite |
| 650 | _ | 7 | |a 530 Physics |2 Other |
| 693 | _ | _ | |a FLASH2 |f FLASH2 Beamline FL26 |1 EXP:(DE-H253)FLASHII-20150901 |0 EXP:(DE-H253)F-FL26-20150901 |6 EXP:(DE-H253)F-FL26-20150901 |x 0 |
| 700 | 1 | _ | |a Pfeifer, Thomas |0 P:(DE-H253)PIP1010834 |b 1 |e Thesis advisor |
| 700 | 1 | _ | |a Oberthaler, Markus |0 P:(DE-HGF)0 |b 2 |e Thesis advisor |
| 773 | _ | _ | |a 10.11588/HEIDOK.00035166 |
| 856 | 4 | _ | |u https://bib-pubdb1.desy.de/record/612496/files/PhDthesisAlexanderMagunia.pdf |y Restricted |
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| 910 | 1 | _ | |a Max-Planck-Gesellschaft zur Förderung der Wissenschaften |0 I:(DE-588b)2019024-4 |k MPG |b 0 |6 P:(DE-H253)PIP1029644 |
| 910 | 1 | _ | |a External Institute |0 I:(DE-HGF)0 |k Extern |b 0 |6 P:(DE-H253)PIP1029644 |
| 910 | 1 | _ | |a European XFEL |0 I:(DE-588)1043621512 |k XFEL.EU |b 0 |6 P:(DE-H253)PIP1029644 |
| 910 | 1 | _ | |a External Institute |0 I:(DE-HGF)0 |k Extern |b 1 |6 P:(DE-H253)PIP1010834 |
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