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@ARTICLE{Semerikova:599033,
      author       = {Semerikova, Anna and Chanyshev, Artem and Glazyrin,
                      Konstantin and Pakhomova, Anna and Kurnosov, Alexander and
                      Litasov, Konstantin and Dubrovinsky, Leonid and Fedotenko,
                      Timofey and Koemets, Egor and Rashchenko, Sergey},
      title        = {{D}oes {I}t “{R}ain” {D}iamonds on {N}eptune and
                      {U}ranus?},
      journal      = {ACS earth and space chemistry},
      volume       = {7},
      number       = {3},
      issn         = {2472-3452},
      address      = {Washington, DC},
      publisher    = {ACS Publications},
      reportid     = {PUBDB-2023-07117},
      pages        = {582 - 588},
      year         = {2023},
      note         = {Waiting for fulltext},
      abstract     = {The methane phase diagram is extremely important to
                      understand the physical properties of the ice
                      giants─Uranus and Neptune. Several experimental studies
                      using diamond anvil cells (DACs) combined with laser heating
                      have reported the formation of diamond from methane at
                      pressures of 10–80 GPa and temperatures above 2000 K,
                      corresponding to the interiors of these planets. These
                      results, however, are probably affected by the presence of
                      metallic heat absorbers, widely used in all previously
                      reported experiments and interacting with hydrogen at high
                      pressure. In the present work, the effect of metallic heat
                      absorbers on the decomposition of methane into diamond was
                      studied at 20–95 GPa and 1300–3700 K using laser-heated
                      DACs with platinum (as hydride-forming) and gold (as
                      non-hydride-forming) metals. In the case of a platinum heat
                      absorber, diamond formation was observed from 50 to 95 GPa
                      near 2000 K simultaneously with platinum hydride formation.
                      In contrast, in the case of a gold heat absorber, diamond
                      formation was not observed below 95 GPa and 3700 K. Thus,
                      the hypothesis of diamond precipitation in the Uranus and
                      Neptune interiors should be reconsidered, taking into
                      account the effect of metallic heater reactivity on the
                      experimentally observed reactions.},
      cin          = {DOOR ; HAS-User / FS-PETRA-D},
      ddc          = {550},
      cid          = {I:(DE-H253)HAS-User-20120731 /
                      I:(DE-H253)FS-PETRA-D-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:000931726600001},
      doi          = {10.1021/acsearthspacechem.2c00343},
      url          = {https://bib-pubdb1.desy.de/record/599033},
}