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@PHDTHESIS{Usenko:317657,
      author       = {Usenko, Sergey},
      othercontributors = {Laarmann, Tim},
      title        = {{I}nterferometry on small quantum systems at short
                      wavelength},
      issn         = {1435-8085},
      school       = {Universität Hamburg},
      type         = {Dissertation},
      address      = {Hamburg},
      publisher    = {Verlag Deutsches Elektronen-Synchrotron},
      reportid     = {PUBDB-2017-00827, DESY-THESIS-2017-002},
      series       = {DESY-THESIS},
      pages        = {138},
      year         = {2017},
      note         = {Dissertation, Universität Hamburg, 2016},
      abstract     = {The present work concentrates on prototypical studies of
                      light-induced correlated manybodydynamics in complex
                      systems. In its course a reflective split-and-delay unit
                      (SDU)for phase-resolved one-color pump-probe experiments
                      with gas phase samples using VUV–XUV laser pulses was
                      built. The collinear propagation of pump and probe pulses is
                      ensuredby the special geometry of the SDU and allows to
                      perform phase-resolved (coherent)autocorrelation
                      measurements. The control of the pump-probe delay with
                      attosecondprecision is established by a specially developed
                      diagnostic tool based on an in-vacuumwhite light
                      interferometer that allows to monitor the relative
                      displacement of the SDU reflectorswith nanometer resolution.
                      Phase-resolved (interferometric) pump-probe experimentswith
                      developed SDU require spatially-resolved imaging of the
                      ionization volume.For this an electron–ion coincidence
                      spectrometer was built. The spectrometer enablescoincident
                      detection of photoionization products using velocity map
                      imaging (VMI) techniquefor electrons and VMI or spatial
                      imaging for ions. In first experiments using thedeveloped
                      SDU and the spectrometer in the ion spatial-imaging mode
                      linear field autocorrelationof free-electron laser pulses at
                      the central wavelength of 38 nm was recorded.A further focus
                      of the work were energy- and time-resolved resonant
                      two-photonionization experiments using short tunable UV
                      laser pulses on C60 fullerene. The experimentsdemonstrated
                      that dipole-selective excitation on a timescale faster than
                      thecharacteristic intramolecular energy dissipation limits
                      the number of accessible excitationpathways and thus results
                      in a narrow resonance. Time-dependent one-color
                      pumpprobestudy showed that nonadiabatic (vibron) coupling is
                      the dominant energy dissipationmechanism for high-lying
                      electronic excited states in C60.},
      cin          = {FS-PS},
      cid          = {I:(DE-H253)FS-PS-20131107},
      pnm          = {6211 - Extreme States of Matter: From Cold Ions to Hot
                      Plasmas (POF3-621) / PHGS, VH-GS-500 - PIER Helmholtz
                      Graduate School $(2015_IFV-VH-GS-500)$},
      pid          = {G:(DE-HGF)POF3-6211 / $G:(DE-HGF)2015_IFV-VH-GS-500$},
      experiment   = {EXP:(DE-H253)F-PG2-20150101},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
      doi          = {10.3204/PUBDB-2017-00827},
      url          = {https://bib-pubdb1.desy.de/record/317657},
}