Dual mode ultrasonic interferometry in multi-anvil high pressure apparatus using single-crystal olivine as the pressure standard
Dual mode ultrasonic interferometry in multi-anvil high pressure apparatus using single-crystal olivine as the pressure standard
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DOI：
10.1080/08957950310001635800
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发表时间：
2004-01
影响因子：
2
通讯作者：
Y. Sinelnikov;Ganglin Chen;R. Liebermann
中科院分区：
文献类型：
--
作者：
Y. Sinelnikov;Ganglin Chen;R. Liebermann
在Kawai型1000吨单轴分裂圆柱装置（USCA-1000）中，采用双模锂酸盐换能器和超声干涉测量法，在室温下进行了压缩（P）和剪切（S）波传播时间的声学测量，压力高达10 GPa。通过在单元组件内部的单晶圣卡洛斯橄榄石缓冲棒中原位测量行进时间来连续校准单元压力。同时测量了致密细晶多晶Al_2 O_3中的弹性纵波和横波速度，压力为10 GPa;根据这些数据，得到了纵向模量{L0 = 461（3）GPa，L0 ′ = 7.0（1）}，剪切模量{G 0 = 162（2）GPa，G 0′ = 1.9（1）}和体弹性模量{K 0 = 245（3）GPa，K 0′ = 4.5（1）}。
Acoustic measurements of compressional (P) and shear (S) wave travel times were performed in a 1000-ton uniaxial split-cylinder apparatus (USCA-1000) of the Kawai-type up to 10 GPa at room temperature, using dual mode lithium niobate transducers and ultrasonic interferometry. The cell pressures were calibrated continuously by in-situ measurements of the travel times in a single crystal San-Carlos olivine buffer rod inside the cell assembly. Elastic compressional and shear wave velocities in a dense, fine-grained polycrystalline Al2O3 were measured simultaneously to 10 GPa; from these data, the elastic moduli and their pressure derivatives were obtained for the longitudinal modulus {L 0 = 461(3) GPa, L 0′ = 7.0(1)}, the shear modulus {G 0 = 162(2) GPa, G 0′ = 1.9(1)} and the bulk modulus {K 0 = 245(3) GPa, K 0′ = 4.5(1)}.