Carbon at pressures in the range 0.1--1 TPa (10 Mbar)

Journal Article · Sun Jul 15 00:00:00 EDT 2001 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1381047· OSTI ID:40277924

Nellis, W J; Mitchell, A C; McMahan, A K

Single-shock (Hugoniot) equation-of-state data of shock-compressed C (graphite) are reported at pressures of 480 and 760 GPa (7.6 Mbar). Graphite is shock-compressed completely into a diamond-like phase at pressures below 80 GPa. At pressures of 80--800 GPa comparison of an ensemble of experimental Hugoniot data for shock-compressed graphite and diamond, and theoretical calculations of the Hugoniots of graphite and diamond, and the 0 K isotherm of diamond suggest diamond melts at {approx}300 GPa on the Hugoniot of graphite and that the diamond phase is the ground-state structure of C up to at least 600 GPa.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: (US)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 40277924
• Journal Information: Journal of Applied Physics, Vol. 90, Issue 2; Other Information: DOI: 10.1063/1.1381047; Othernumber: JAPIAU000090000002000696000001; 024115JAP; PBD: 15 Jul 2001; ISSN 0021-8979
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON
DIAMONDS
GRAPHITE
ISOTHERMS