% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Budewig:610668,
      author       = {Budewig, Laura and Son, Sang-Kil and Santra, Robin},
      title        = {{E}lectron-cloud alignment dynamics induced by an intense
                      {X}-ray free-electron laser pulse: a case study on atomic
                      argon},
      journal      = {Communications Physics},
      volume       = {7},
      number       = {1},
      issn         = {2399-3650},
      address      = {London},
      publisher    = {Springer Nature},
      reportid     = {PUBDB-2024-04674},
      pages        = {363},
      year         = {2024},
      abstract     = {In an intense X-ray free-electron laser (XFEL) pulse, atoms
                      are sequentially ionised by multiple X-ray photons.
                      Photoionisation generally induces an alignment of the
                      electron cloud of the produced atomic ion regarding its
                      orbital-angular-momentum projections. However, how the
                      alignment evolves during sequential X-ray multi-photon
                      ionisation accompanied by decay processes has been
                      unexplored. Here we present a theoretical prediction of the
                      time evolution of the electron-cloud alignment of argon ions
                      induced by XFEL pulses. To this end, we calculate
                      state-resolved ionisation dynamics of atomic argon
                      interacting with an intense linearly polarised X-ray pulse,
                      which generates ions in a wide range of charge states with
                      non-zero orbital- and spin-angular momenta. Employing
                      time-resolved alignment parameters, we predict the existence
                      of non-trivial alignment dynamics during intense XFEL
                      pulses. This implies that even if initially the atomic
                      electron cloud is perfectly spherically symmetric, X-ray
                      multi-photon ionisation can lead to noticeable reshaping of
                      the electron cloud.},
      cin          = {CFEL-DESYT / FS-CFEL-3},
      ddc          = {530},
      cid          = {I:(DE-H253)CFEL-DESYT-20160930 /
                      I:(DE-H253)FS-CFEL-3-20120731},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631) / HIDSS-0002 - DASHH: Data Science in Hamburg -
                      Helmholtz Graduate School for the Structure of Matter
                      $(2019_IVF-HIDSS-0002)$},
      pid          = {G:(DE-HGF)POF4-631 / $G:(DE-HGF)2019_IVF-HIDSS-0002$},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001351613500001},
      doi          = {10.1038/s42005-024-01852-x},
      url          = {https://bib-pubdb1.desy.de/record/610668},
}