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@ARTICLE{Kittel:611426,
      author       = {Kittel, Christoph and Sarracini, Antoine and Augustin, Sven
                      and Yang, Ningchen and Haddad, Andre Al and Knopp, Gregor
                      and Ferrari, Eugenio and Knurr, Jonas and Morillo-Candas,
                      Ana Sofia and Swiderska, Iwona and Prat Costa, Eduard and
                      Sammut, Nicholas and Schmidt, Thomas and Bostedt, Christoph
                      and Calvi, Marco and Schnorr, Kirsten},
      title        = {{D}emonstration of full polarization control of soft
                      {X}-ray pulses with {A}pple {X} undulators at {S}wiss{FEL}
                      using recoil ion momentum spectroscopy},
      journal      = {Journal of synchrotron radiation},
      volume       = {31},
      number       = {5},
      issn         = {1600-5775},
      address      = {[Erscheinungsort nicht ermittelbar]},
      publisher    = {Wiley-Blackwell},
      reportid     = {PUBDB-2024-04912},
      pages        = {1134-1145},
      year         = {2024},
      abstract     = {The ability to freely control the polarization of X-rays
                      enables measurement tech- niques relying on circular or
                      linear dichroism, which have become indispensable tools for
                      characterizing the properties of chiral molecules or
                      magnetic structures. Therefore, the demand for polarization
                      control in X-ray free-electron lasers is increasing to
                      enable polarization-sensitive, dynamical studies on
                      ultrafast time scales. The soft X-ray branch Athos of
                      SwissFEL was designed with the aim of providing freely
                      adjustable and arbitrary polarization by building its
                      undulator solely from modules of the novel Apple X type. In
                      this paper, we study the mag- netic model of the linear
                      inclined and circular Apple X polarization schemes. We
                      characterize the polarization by measuring the angular
                      electron emission distri- butions of helium for various
                      polarizations using cold target recoil ion momen- tum
                      spectroscopy. We demonstrate the generation of fully linear
                      polarized light of arbitrary angle, as well as elliptical
                      polarizations of varying degree.},
      cin          = {MPY},
      ddc          = {550},
      cid          = {I:(DE-H253)MPY-20120731},
      pnm          = {621 - Accelerator Research and Development (POF4-621) /
                      PSI-FELLOW-III-3i - International, Interdisciplinary $\&$
                      Intersectoral Postdoctoral Fellowships at the Paul Scherrer
                      Institut (884104)},
      pid          = {G:(DE-HGF)POF4-621 / G:(EU-Grant)884104},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:39120914},
      UT           = {WOS:001362324700016},
      doi          = {10.1107/S1600577524006325},
      url          = {https://bib-pubdb1.desy.de/record/611426},
}