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@ARTICLE{Frost:605543,
      author       = {Frost, Mungo and McWilliams, R. Stewart and Bykova, Elena
                      and Bykov, Maxim and Husband, Rachel J. and
                      Andriambariarijaona, Leon M. and Khandarkhaeva, Saiana and
                      Massani, Bernhard and Appel, Karen and Baehtz, Carsten and
                      Ball, Orianna B. and Cerantola, Valerio and Chariton, Stella
                      and Choi, Jinhyuk and Cynn, Hyunchae and Duff, Matthew J.
                      and Dwivedi, Anand and Edmund, Eric and Fiquet, Guillaume
                      and Graafsma, Heinz and Hwang, Huijeong and Jaisle, Nicolas
                      and Kim, Jaeyong and Konôpková, Zuzana and Laurus, Torsten
                      and Lee, Yongjae and Liermann, Hanns-Peter and McHardy,
                      James D. and McMahon, Malcolm I. and Morard, Guillaume and
                      Nakatsutsumi, Motoaki and Nguyen, Lan Anh and Ninet, Sandra
                      and Prakapenka, Vitali B. and Prescher, Clemens and Redmer,
                      Ronald and Stern, Stephan and Strohm, Cornelius and
                      Sztuk-Dambietz, Jolanta and Turcato, Monica and Wu, Zhongyan
                      and Glenzer, Siegfried H. and Goncharov, Alexander F.},
      title        = {{D}iamond precipitation dynamics from hydrocarbons at icy
                      planet interior conditions},
      journal      = {Nature astronomy},
      volume       = {8},
      number       = {2},
      issn         = {2397-3366},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {PUBDB-2024-01494},
      pages        = {174-181},
      year         = {2024},
      abstract     = {The pressure and temperature conditions at which
                      precipitation of diamond occurs from hydrocarbon mixtures is
                      important for modelling the interior dynamics of icy
                      planets. However, there is substantial disagreement from
                      laboratory experiments, with those using dynamic compression
                      techniques finding much more extreme conditions are required
                      than in static compression. Here we report the time-resolved
                      observation of diamond formation from statically compressed
                      polystyrene, (C$_8$H$_8$)$_n$, heated using the 4.5 MHz
                      X-ray pulse trains at the European X-ray Free Electron Laser
                      facility. Diamond formation is observed above 2,500 K from
                      19 GPa to 27 GPa, conditions representative of
                      Uranus’s and Neptune’s shallow interiors, on 30 μs to
                      40 μs timescales. This is much slower than may be
                      observed during the ∼10 ns duration of typical dynamic
                      compression experiments, revealing reaction kinetics to be
                      the reason for the discrepancy. Reduced pressure and
                      temperature conditions for diamond formation has
                      implications for icy planetary interiors, where diamond
                      subduction leads to heating and could drive convection in
                      the conductive ice layer that has a role in their magnetic
                      fields.},
      cin          = {DOOR ; HAS-User / FS-HIBEF / $XFEL_E1_HED$ / CFEL-DRD /
                      $XFEL_DO_DD_DET$},
      ddc          = {520},
      cid          = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)FS-HIBEF-20240110
                      / $I:(DE-H253)XFEL_E1_HED-20210408$ /
                      I:(DE-H253)CFEL-DRD-20160910 /
                      $I:(DE-H253)XFEL_DO_DD_DET-20210408$},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631) / 6G3 - PETRA III (DESY) (POF4-6G3)},
      pid          = {G:(DE-HGF)POF4-631 / G:(DE-HGF)POF4-6G3},
      experiment   = {EXP:(DE-H253)P-P02.2-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001138168700001},
      doi          = {10.1038/s41550-023-02147-x},
      url          = {https://bib-pubdb1.desy.de/record/605543},
}