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@MASTERSTHESIS{Faatz:349915,
      author       = {Faatz, Nicolas},
      title        = {{S}imulations of the occupation numbers of hyperfine
                      substates passing external fields},
      school       = {RWTH Aachen},
      type         = {Masterarbeit},
      reportid     = {GSI-2024-00515},
      pages        = {100},
      year         = {2023},
      note         = {Masterarbeit, RWTH Aachen, 2023},
      abstract     = {Since the beginning of the early quantum mechanics, devices
                      have been built to detect as wellas to manipulate spins of
                      atoms. Those have been investigated as beams, samples or
                      used astargets. Key tools for manipulating spins are
                      external fields with which excitations are possible.To get a
                      better understanding on how this process happens and how to
                      use their final properties,simulations are needed. Those are
                      produced out of theoretical quantum mechanical
                      calculations.Therefore, this thesis deals with the topic of
                      simulating occupation numbers of hyperfine substatesin the
                      presence of external fields. In particular the simulations
                      of already existing devices such asa spin filter or a Sona
                      transition unit are done. As the experimental set-up works
                      with metastable$2S_{1/2}$ hydrogen atoms, the main part of
                      this thesis describes the results for those kind of atoms.
                      Inthe final part, a general description for any kind of
                      hyperfine substates inside the Sona transitionunit is
                      taken.},
      cin          = {FFN},
      cid          = {I:(DE-Ds200)FFN-20210302OR452},
      pnm          = {612 - Cosmic Matter in the Laboratory (POF4-612)},
      pid          = {G:(DE-HGF)POF4-612},
      experiment   = {$EXP:(DE-Ds200)External_experiment-20200803$},
      typ          = {PUB:(DE-HGF)19},
      url          = {https://repository.gsi.de/record/349915},
}