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@MASTERSTHESIS{Kunkel:911460,
      author       = {Kunkel, Lukas},
      othercontributors = {Engels, Ralf W.},
      title        = {{S}uche nach systematischen {E}ffekten bei magnetisch
                      induzierten Übergängen zwischen
                      {H}yperfeinstruktur-{U}nterzuständen},
      school       = {University of Applied Science Aachen, Campus Jülich},
      type         = {Bachelorarbeit},
      address      = {Jülich},
      publisher    = {Forschungszentrum},
      reportid     = {FZJ-2022-04732},
      pages        = {87},
      year         = {2022},
      note         = {Bachelorarbeit, University of Applied Science Aachen,
                      Campus Jülich, 2022},
      abstract     = {The states caused by the interaction of nuclear and
                      electron spin are also called hyperfine structure. In a
                      magnetic field, the states of the hyperfine structure split
                      according to their possible magnetic projections, into the
                      so-called Zeeman states. The splitting of these energy
                      levels in a hydrogen-like atom by an applied magnetic field
                      is described by the Breit-Rabi formula. In this thesis, the
                      transitions between different hyperfine energy levels of
                      excited atoms (such as hydrogen and deuterium) in a magnetic
                      field are studied. The main objective is to investigate the
                      influences that can be taken on these transitions. At the
                      Institute for Nuclear Physics of Forschungszentrum Jülich,
                      measurements of the hyperfine structure and its substates
                      are performed using a Lambshift polarimeter and a novel Sona
                      transition unit. Here, a static magnetic field in the form
                      of a harmonic oscillation is used to generate photons in the
                      inertial system of the through-going particle to induce
                      transitions between Zeeman states of the hyperfine structure
                      in an atomic beam. It is important to note that the relative
                      velocity of the photons corresponds to the relative velocity
                      of the atoms in the beam. For hydrogen, this simultaneously
                      exchanges the occupation numbers of the α1 and β3 states
                      according to the principle of P.G. Sona, since their
                      precession cannot follow the magnetic field and the magnetic
                      moment reverses its orientation relative to the applied
                      field of the quantization axis after the zero crossing. In a
                      Spinfilter behind the Sona region, the states can be
                      filtered again, leaving only one atoms in a single state in
                      the beam. Atoms in the remaining excited states are
                      converted to the ground state by a static electric field at
                      the end of the beam path in the quench chamber. During this
                      process, Lyman-α photons are emitted that are then
                      converted into an electrical signal in a photomultiplier.
                      This signal is proportional to the number of excited atoms
                      and, thus, allows conclusions about the rearrangement of the
                      various states during the transitions. This thesis deals
                      with the evaluation of the measurement setup and its
                      influences on the measurement. Furthermore, a model with two
                      transition possibilities was developed to explain the
                      oscillations, and for the first time, a scaling of the
                      measurement result in the energy image was performed.},
      cin          = {IKP-2 / PGI-6},
      cid          = {I:(DE-Juel1)IKP-2-20111104 / I:(DE-Juel1)PGI-6-20110106},
      pnm          = {612 - Cosmic Matter in the Laboratory (POF4-612)},
      pid          = {G:(DE-HGF)POF4-612},
      typ          = {PUB:(DE-HGF)2},
      url          = {https://juser.fz-juelich.de/record/911460},
}