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Ramp compression of diamond to five terapascals.
Smith, R F; Eggert, J H; Jeanloz, R; Duffy, T S; Braun, D G; Patterson, J R; Rudd, R E; Biener, J; Lazicki, A E; Hamza, A V; Wang, J; Braun, T; Benedict, L X; Celliers, P M; Collins, G W.
Afiliación
  • Smith RF; Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA.
  • Eggert JH; Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA.
  • Jeanloz R; Department of Earth and Planetary Science, Department of Astronomy and Miller Institute for Basic Research in Science, University of California, Berkeley, California 94720, USA.
  • Duffy TS; Department of Geosciences, Princeton University, Princeton, New Jersey 08544, USA.
  • Braun DG; Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA.
  • Patterson JR; Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA.
  • Rudd RE; Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA.
  • Biener J; Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA.
  • Lazicki AE; Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA.
  • Hamza AV; Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA.
  • Wang J; Department of Earth and Planetary Science, Department of Astronomy and Miller Institute for Basic Research in Science, University of California, Berkeley, California 94720, USA.
  • Braun T; Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA.
  • Benedict LX; Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA.
  • Celliers PM; Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA.
  • Collins GW; Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA.
Nature ; 511(7509): 330-3, 2014 Jul 17.
Article en En | MEDLINE | ID: mdl-25030170
ABSTRACT
The recent discovery of more than a thousand planets outside our Solar System, together with the significant push to achieve inertially confined fusion in the laboratory, has prompted a renewed interest in how dense matter behaves at millions to billions of atmospheres of pressure. The theoretical description of such electron-degenerate matter has matured since the early quantum statistical model of Thomas and Fermi, and now suggests that new complexities can emerge at pressures where core electrons (not only valence electrons) influence the structure and bonding of matter. Recent developments in shock-free dynamic (ramp) compression now allow laboratory access to this dense matter regime. Here we describe ramp-compression measurements for diamond, achieving 3.7-fold compression at a peak pressure of 5 terapascals (equivalent to 50 million atmospheres). These equation-of-state data can now be compared to first-principles density functional calculations and theories long used to describe matter present in the interiors of giant planets, in stars, and in inertial-confinement fusion experiments. Our data also provide new constraints on mass-radius relationships for carbon-rich planets.

Texto completo: 1 Base de datos: MEDLINE Idioma: En Revista: Nature Año: 2014 Tipo del documento: Article

Texto completo: 1 Base de datos: MEDLINE Idioma: En Revista: Nature Año: 2014 Tipo del documento: Article