摘要We combine the flyer-impact experiment and improve the finite difference method to solve whether the shear viscosity coefficient of shock iron is more reliable. We find that the numerical simulated profile agrees well with the measured one, from which the determined effective shear viscosity coefficients of shocked iron are 3000±100 Pa⋅s and 4000±100 Pa⋅s, respectively, at 103 GPa and 159 GPa. These values are more than 2000±300 Pa⋅s of Li Y L et al.[Chin. Phys. Lett. 26 (2009) 038301] Our values are more reasonable because they are obtained from a comprehensive simulation for the full-shocked perturbation evolving process.
Abstract：We combine the flyer-impact experiment and improve the finite difference method to solve whether the shear viscosity coefficient of shock iron is more reliable. We find that the numerical simulated profile agrees well with the measured one, from which the determined effective shear viscosity coefficients of shocked iron are 3000±100 Pa⋅s and 4000±100 Pa⋅s, respectively, at 103 GPa and 159 GPa. These values are more than 2000±300 Pa⋅s of Li Y L et al.[Chin. Phys. Lett. 26 (2009) 038301] Our values are more reasonable because they are obtained from a comprehensive simulation for the full-shocked perturbation evolving process.
MA Xiao-Juan**;LIU Fu-Sheng;SUN Yan-Yun;ZHANG Ming-Jian;PENG Xiao-Juan;LI Yong-Hong
. Effective Shear Viscosity of Iron under Shock-Loading Condition[J]. 中国物理快报, 2011, 28(4): 44704-044704.
MA Xiao-Juan**, LIU Fu-Sheng, SUN Yan-Yun, ZHANG Ming-Jian, PENG Xiao-Juan, LI Yong-Hong
. Effective Shear Viscosity of Iron under Shock-Loading Condition. Chin. Phys. Lett., 2011, 28(4): 44704-044704.
[1] Dziewonski A M et al 1981 Phys. Earth Planet. Inter. 25 297
[2] Buffett B A 1997 Nature 388 571
[3] Secco R A 1995 Viscosity of the Outer Core (San Francisco: American Geophysical Union) 159
[4] Mineev V N, Funtikov A I 2004 Phys. Usp. 47 671
[5] Miller G H and Ahrens T J 1991 Rev. Mod. Phys. 63 919
[6] Terasaki H et al 2002 Geophys. Rev. Lett. 29 68
[7] Dobson D P 2002 Phys. Earth Planet. Inter. 130 271
[8] Sakharov A D et al 1965 Sov. Phys. Doklady. 9 1091
[9] Ma X J, Liu F S and Jing F Q 2010 Sci. Chin. G 53 802
[10] Liu F S et al 2005 Chin. Phys. Lett. 22 747
[11] Li Y L et al 2009 Rev. Sci. Instrum. 80 139
[12] Li Y L et al 2009 Chin. Phys. Lett. 26 038301
[13] Ma X J et al 2010 Acta Phys. Sin. 59 4761 (in Chinese)
[14] Marsh S P 1980 LASL Shock Hugoniot Data (Berkley: University of California) p 260
2011, Vol. 28 
