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10.1038/ncomms10970 http://scihub22266oqcxt.onion/10.1038/ncomms10970 C4793081!4793081!26972122     free     free     free Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Nat+Commun 2016 ; 7 (ä): ä Nephropedia Template TP {{tp|p=26972122|t=2016. Nanosecond formation of diamond and lonsdaleite by shock compression of graphite |pdf=|usr=}}{{26972122}} gab.com Text Nanosecond formation of diamond and lonsdaleite by shock compression of graphite JO: Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=26972122 #FOAvip The shock-induced transition from graphite to diamond has been of great scientific and technological interest since the discovery of microscopic diamonds in remnants of explosively driven graphite. Furthermore, shock synthesis of diamond and lonsdaleite, a speculative hexagonal carbon polymorph with unique hardness, is expected to happen during violent meteor impacts. Here, we show unprecedented in situ X-ray diffraction measurements of diamond formation on nanosecond timescales by shock compression of pyrolytic as well as polycrystalline graphite to pressures from 19?GPa up to 228?GPa. While we observe the transition to diamond starting at 50?GPa for both pyrolytic and polycrystalline graphite, we also record the direct formation of lonsdaleite above 170?GPa for pyrolytic samples only. Our experiment provides new insights into the processes of the shock-induced transition from graphite to diamond and uniquely resolves the dynamics that explain the main natural occurrence of the lonsdaleite crystal structure being close to meteor impact sites. Twit Text FOAVip Nanosecond formation of diamond and lonsdaleite by shock compression of graphite ????Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=26972122 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=26972122 #FOAvip English Wikipedia <ref>{{Cite pmid|26972122}}</ref> Nanosecond formation of diamond and lonsdaleite by shock compression of graphite #MMPMID26972122 Kraus D; Ravasio A; Gauthier M; Gericke DO; Vorberger J; Frydrych S; Helfrich J; Fletcher LB; Schaumann G; Nagler B; Barbrel B; Bachmann B; Gamboa EJ; Göde S; Granados E; Gregori G; Lee HJ; Neumayer P; Schumaker W; Döppner T; Falcone RW; Glenzer SH; Roth M Nat Commun 2016[]; 7 (ä): ä PMID26972122show ga The shock-induced transition from graphite to diamond has been of great scientific and technological interest since the discovery of microscopic diamonds in remnants of explosively driven graphite. Furthermore, shock synthesis of diamond and lonsdaleite, a speculative hexagonal carbon polymorph with unique hardness, is expected to happen during violent meteor impacts. Here, we show unprecedented in situ X-ray diffraction measurements of diamond formation on nanosecond timescales by shock compression of pyrolytic as well as polycrystalline graphite to pressures from 19?GPa up to 228?GPa. While we observe the transition to diamond starting at 50?GPa for both pyrolytic and polycrystalline graphite, we also record the direct formation of lonsdaleite above 170?GPa for pyrolytic samples only. Our experiment provides new insights into the processes of the shock-induced transition from graphite to diamond and uniquely resolves the dynamics that explain the main natural occurrence of the lonsdaleite crystal structure being close to meteor impact sites. äNanosecond formation of diamond and lonsdaleite by shock compression o(epmc).pdf DeepDyve Pubget Overpricing