Electronic conduction in shock-compressed water

被引:93
作者
Celliers, PM [1 ]
Collins, GW
Hicks, DG
Koenig, M
Henry, E
Benuzzi-Mounaix, A
Batani, D
Bradley, DK
Da Silva, LB
Wallace, RJ
Moon, SJ
Eggert, JH
Lee, KKM
Benedetti, LR
Jeanloz, R
Masclet, I
Dague, N
Marchet, B
Le Gloahec, MR
Reverdin, C
Pasley, J
Willi, O
Neely, D
Danson, C
机构
[1] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA
[2] Univ Paris 06, Ecole Polytech, CEA,CNRS,Unite Mixte 7605, LULI, F-91128 Palaiseau, France
[3] Univ Milano Bicocca, Dipartimento Fis G Occhialini, I-20126 Milan, Italy
[4] INFM, I-20126 Milan, Italy
[5] Univ Calif Berkeley, Berkeley, CA 94720 USA
[6] CEA, DAM Ile France, F-91680 Bruyeres Le Chatel, France
[7] Univ London Imperial Coll Sci Technol & Med, London, England
[8] Rutherford Appleton Lab, Cent Laser Facil, Didcot OX11 0QX, Oxon, England
关键词
D O I
10.1063/1.1758944
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
The optical reflectance of a strong shock front in water increases continuously with pressure above 100 GPa and saturates at similar to45% reflectance above 250 GPa. This is the first evidence of electronic conduction in high pressure water. In addition, the water Hugoniot equation of state up to 790 GPa (7.9 Mbar) is determined from shock velocity measurements made by detecting the Doppler shift of reflected light. From a fit to the reflectance data we find that an electronic mobility gap similar to2.5 eV controls thermal activation of electronic carriers at pressures in the range of 100-150 GPa. This suggests that electronic conduction contributes significantly to the total conductivity along the Neptune isentrope above 150 GPa. (C) 2004 American Institute of Physics.
引用
收藏
页码:L41 / L44
页数:4
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