title: [Raman spectroscopic study on silicone fluid as pressure gauge].
abstract: Within a diamond-anvil cell, the in-situ Raman spectroscopic study of silicone fluid was operated at room temperature 298. 1 K and under pressures from 0.1 to 5140.2 MPa. The present study analyzed the correlation of the modes 2906 and 2967 cm(-1) with different pressures, indicating that their wavenumbers linearly increased with increasing pressure. Therefore, this provided the potential to consider the pressure medium silicone fluid as a pressure gauge. The result suggested that silicone fluid could be used as a reliable pressure gauge in high-pressure experiments using diamond-anvil cells with Raman spectrometer, and the correlations between pressure and (delta nu p)2906, (delta nu p)2967 are, p = -0.05[(delta nu p)2967]2 + 73.07 (delta nu p)2967 + 91.54 and p = 0.14 [(delta nu p)2906]2 + 81.9 (delta nu p)2906 + 92.01, respectively.
authors.affiliation: School of Earth and Space Sciences, Peking University, Beijing 100871, China. jeffcug@gmail.com
authors.forename: Jin
authors.initials: J
authors.lastname: Liu
authors.forename: Qiang
authors.initials: Q
authors.lastname: Sun