Measurement on Effective Shear Viscosity Coefficient of Iron under Shock Compression at 100GPa
LI Yi-Lei1,3, LIU Fu-Sheng1, ZHANG Ming-Jian1, MA Xiao-Juan1, LI Ying-Lei2, ZHANG Ji-Chun3
1Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu, 6100312Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 6219003School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031
Measurement on Effective Shear Viscosity Coefficient of Iron under Shock Compression at 100GPa
LI Yi-Lei1,3, LIU Fu-Sheng1, ZHANG Ming-Jian1, MA Xiao-Juan1, LI Ying-Lei2, ZHANG Ji-Chun3
1Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu, 6100312Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 6219003School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031
摘要The oscillatory damping curve of a shock front propagating in iron shocked to 103GPa is measured by use of two-stage light-gas gun and electric pin techniques. The corresponding effective shear viscosity coefficient is deduced to be about 2000 Pa・s from Miller and Ahrens' formula. The result is consistent with that of Mineev's data at 31GPa, while it is higher by five orders than the predictions based on the static measurements at about 5GPa and 2000K and molecular dynamic simulation up to 135-375GPa and 4300-6000K, and the discussions are presented.
Abstract：The oscillatory damping curve of a shock front propagating in iron shocked to 103GPa is measured by use of two-stage light-gas gun and electric pin techniques. The corresponding effective shear viscosity coefficient is deduced to be about 2000 Pa・s from Miller and Ahrens' formula. The result is consistent with that of Mineev's data at 31GPa, while it is higher by five orders than the predictions based on the static measurements at about 5GPa and 2000K and molecular dynamic simulation up to 135-375GPa and 4300-6000K, and the discussions are presented.
LI Yi-Lei;LIU Fu-Sheng;ZHANG Ming-Jian;MA Xiao-Juan;LI Ying-Lei;ZHANG Ji-Chun. Measurement on Effective Shear Viscosity Coefficient of Iron under Shock Compression at 100GPa[J]. 中国物理快报, 2009, 26(3): 38301-038301.
LI Yi-Lei, LIU Fu-Sheng, ZHANG Ming-Jian, MA Xiao-Juan, LI Ying-Lei, ZHANG Ji-Chun. Measurement on Effective Shear Viscosity Coefficient of Iron under Shock Compression at 100GPa. Chin. Phys. Lett., 2009, 26(3): 38301-038301.
[1] Miller G H and Ahrens T J 1991 Rev. Mod. Phys. 63 919 [2] Li X J, Zhou X M, Wang F H et al 2001 Chin. Phys.Lett. 18 1632 [3] Bi Y, Tan H and Jing F Q 2002 Chin. Phys. Lett. 19 243 [4] Lee W, Jennings P et al 2002 International Handbookof Earthquake and Engineering Seismology (New York: Academic) p 333 [5] Chen Y and Zhu R X 2005 Advances in Earth Science 20 485 (in Chinese) [6] Mineev V N and Funtikov A I 2004 Phys. Usp. 47671 [7] Brazhkin V V 1998 JETP Letters 68 1090 [8] Brazhkin V V and Lyapin A G 2000 Phys. Usp. 43493 [9] Rutter M D, Secco R A, et al 2002 Phys. Rev. B 66 536 [10] Terasaki H, Kato T et al 2002 Geophys. Res. Lett. 29 68 [11] Desgranges C and Delhommelle J 2007 Phys. Rev. B 76 072102 [12] Liu F S, Yang M X et al 2005 Chin. Phys. Lett. 22 747 [13] Sakharov A D, et al 1965 Sov. Phys. Doklady 91091 [14] Marsh S P 1980 LASL Shock Hugoniot Data (Berkeley:University of California Press) p 260 [15] Howard W M and Molitoris J D 2006 APS Topic SCCMMeeting (Baltimore, USA 31 July--5 August 2005) p 319
2009, Vol. 26 
