title: A broadband spectroscopy method for ultrasonic wave velocity measurement under high pressure.
abstract: A broadband spectroscopy method is proposed to measure the ultrasonic wave phase velocity of Z-cut quartz under high pressure up to 4.7 GPa. The sample is in a hydrostatic circumstance under high pressure, and we can get longitudinal wave and shear wave signals simultaneously in our work. By fast Fourier transform of received signals, the spectrum and phase of the received signals could be obtained. After unwrapping the phase of the received signals, the travel time of ultrasonic wave in the sample could be obtained, and the ultrasonic wave phase velocity could also be resolved after data processing. The elastic constant of measurement under high pressure is also compared with previous studies. This broadband spectroscopy method is a valid method to get ultrasonic wave travel parameters, and it could be applied for elasticity study of materials under high pressure.
authors.affiliation: Institute of Geochemistry of Earth's Deep Interior Materials and Fluid Interaction, Chinese Academy of Science, Guiyang, China. wangzg168@126.com
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Wang
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Liu
authors.forename: Wei
authors.initials: W
authors.lastname: Song
authors.forename: Yan
authors.initials: Y
authors.lastname: Bi
authors.forename: Hongsen
authors.initials: H
authors.lastname: Xie