title: Attosecond Electron-Nuclear Dynamics in Photodissociation of H2 and D2
creator: Shobeiry, Farshad
subject: ddc-500
subject: 500 Natural sciences and mathematics
subject: ddc-530
subject: 530 Physics
description: In this work the dynamics of molecular hydrogen (H 2 ) and molecular deuterium (D 2 ) are investigated in a series of kinematically complete experiments on an attosecond time scale using the RABBIT technique. To achieve this, a high-repetition rate attosecond beamline has been designed and constructed. A Mach-Zehnder interferometer konfiguration is used to perform pump-probe XUV+IR experiments with the help of a sub-8-fs 150-kHz fiber laser to produce XUV light using high harmonic generation. The beamline is combined with a state-of-the-art reaction microscope and coincident electron and ion detection is used to uncover the molecular fragmentation dynamics. The electron localization in the molecular frame of reference in photodissociation of H2 and D2 is demonstrated. A semi-classical simulation supports the observed phenomena. The localization of the electron can be manipulated by the number of absorbed photons in the system as well as the delay between the pump and probe pulses. Moreover, phases of the electronic wavepackets in the vicinity of resonant doubly-excited states are extracted, and isotope effects are presented.
date: 2021
type: Dissertation
type: info:eu-repo/semantics/doctoralThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/29521/1/Shobeiry-Thesis.pdf
identifier: DOI:10.11588/heidok.00029521
identifier: urn:nbn:de:bsz:16-heidok-295217
identifier:   Shobeiry, Farshad  (2021) Attosecond Electron-Nuclear Dynamics in Photodissociation of H2 and D2.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/29521/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng