Elasticity, strength, and refractive index of argon at high pressures

Bin Chen; A. E. Gleason; J. Y. Yan; K. J. Koski; Simon Clark; Raymond Jeanloz

doi:10.1103/PhysRevB.81.144110

Elasticity, strength, and refractive index of argon at high pressures

Bin Chen^*, A. E. Gleason, J. Y. Yan, K. J. Koski, Simon Clark, Raymond Jeanloz

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

High-pressure Brillouin spectroscopy of polycrystalline argon, measured using two scattering angles (180° and 70°), determines the isotropic elastic moduli, shear strength, equation of state, and refractive index of face-centered-cubic argon from 1.3 to 30 GPa at room temperature. The index of refraction n=1.33-1.67 over this pressure range. An Eulerian finite-strain analysis (Birch-Murnaghan equation of state) yields an isothermal bulk modulus and pressure derivative K_T =15.1 (±1.1) GPa and K′_T =5.4 (±0.3) at 2 GPa. The resulting equation of state agrees well with previous x-ray diffraction measurements, illustrating the suitability of high-pressure Brillouin scattering for characterizing the elasticity and strength of polycrystalline materials.

Original language	English
Article number	144110
Pages (from-to)	1-5
Number of pages	5
Journal	Physical Review B: Condensed Matter and Materials Physics
Volume	81
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.81.144110
Publication status	Published - 14 Apr 2010
Externally published	Yes

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title = "Elasticity, strength, and refractive index of argon at high pressures",

abstract = "High-pressure Brillouin spectroscopy of polycrystalline argon, measured using two scattering angles (180° and 70°), determines the isotropic elastic moduli, shear strength, equation of state, and refractive index of face-centered-cubic argon from 1.3 to 30 GPa at room temperature. The index of refraction n=1.33-1.67 over this pressure range. An Eulerian finite-strain analysis (Birch-Murnaghan equation of state) yields an isothermal bulk modulus and pressure derivative KT =15.1 (±1.1) GPa and K′T =5.4 (±0.3) at 2 GPa. The resulting equation of state agrees well with previous x-ray diffraction measurements, illustrating the suitability of high-pressure Brillouin scattering for characterizing the elasticity and strength of polycrystalline materials.",

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T1 - Elasticity, strength, and refractive index of argon at high pressures

AU - Chen, Bin

AU - Gleason, A. E.

AU - Yan, J. Y.

AU - Koski, K. J.

AU - Clark, Simon

AU - Jeanloz, Raymond

PY - 2010/4/14

Y1 - 2010/4/14

N2 - High-pressure Brillouin spectroscopy of polycrystalline argon, measured using two scattering angles (180° and 70°), determines the isotropic elastic moduli, shear strength, equation of state, and refractive index of face-centered-cubic argon from 1.3 to 30 GPa at room temperature. The index of refraction n=1.33-1.67 over this pressure range. An Eulerian finite-strain analysis (Birch-Murnaghan equation of state) yields an isothermal bulk modulus and pressure derivative KT =15.1 (±1.1) GPa and K′T =5.4 (±0.3) at 2 GPa. The resulting equation of state agrees well with previous x-ray diffraction measurements, illustrating the suitability of high-pressure Brillouin scattering for characterizing the elasticity and strength of polycrystalline materials.

AB - High-pressure Brillouin spectroscopy of polycrystalline argon, measured using two scattering angles (180° and 70°), determines the isotropic elastic moduli, shear strength, equation of state, and refractive index of face-centered-cubic argon from 1.3 to 30 GPa at room temperature. The index of refraction n=1.33-1.67 over this pressure range. An Eulerian finite-strain analysis (Birch-Murnaghan equation of state) yields an isothermal bulk modulus and pressure derivative KT =15.1 (±1.1) GPa and K′T =5.4 (±0.3) at 2 GPa. The resulting equation of state agrees well with previous x-ray diffraction measurements, illustrating the suitability of high-pressure Brillouin scattering for characterizing the elasticity and strength of polycrystalline materials.

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Elasticity, strength, and refractive index of argon at high pressures

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