[1] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA
[2] Stanford Univ, Stanford, CA 94305 USA
[3] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea
[4] PNCSRF, APS Sect 20, Argonne, IL 60439 USA
[5] Carnegie Inst Sci, Geophys Lab, HPSynC, Argonne, IL 60439 USA
[6] Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China
[7] Univ Nevada, HiPSEC, Las Vegas, NV 89154 USA
[8] Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA
[9] Carnegie Inst Sci, Geophys Lab, HPCAT, Argonne, IL 60439 USA
[10] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA
[11] Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China
[12] Univ Illinois, Dept Phys, De Kalb, IL 60115 USA