Laser ultrasonic measurements in a diamond anvil cell on Fe and the KBr pressure medium

N Chigarev (1) , P Zinin (2) , D Mounier (3) , A Bulou (3) , Andreas Zerr (4, 5) , L Ming (2) , V Gusev (1)

1 LAUM - Laboratoire d'Acoustique de l'Université du Mans
2 HIGP - Hawaii Institute of Geophysics and Planetology
3 LPEC - Laboratoire de physique de l'état condensé
4 LPMTM - Laboratoire des Propriétés Mécaniques et Thermodynamiques des Matériaux
5 LSPM - Laboratoire des Sciences des Procédés et des Matériaux

Laser ultrasonic technique has been successfully applied to a sample embedded in a transparent pressure transmitting medium to measure sound velocity at high pressures in a diamond anvil cell. Shear and longitudinal acoustic wave velocities are measured both for an opaque sample, Fe, and a transparent pressure transmitting medium, KBr, at pressures ranging from 0.3-24.8 GPa. The small sample size used in this experiment for sound velocity measurements suggests great potential for using this technique to evaluate the elastic properties of solids at pressures approaching 100 GPa and for other samples embedded in soft, transparent pressure transmitting media such as KBr or argon.

Mots clés: high-pressure physcis

Domaines: Matière Condensée [cond-mat]; Acoustique [physics.class-ph]

N Chigarev, P Zinin, D Mounier, A Bulou, Andreas Zerr, et al.. Laser ultrasonic measurements in a diamond anvil cell on Fe and the KBr pressure medium. Journal of Physics: Conference Series, 2011, 278, pp.012017. ⟨10.1088/1742-6596/278/1/012017⟩. ⟨hal-03860516⟩