J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 37-41
Measurements of sound velocity of laser-irradiated iron foils relevant to earth core conditionK. Shigemori1, D. Ichinose1, T. Irifune2, K. Otani1, T.Shiota1, T. Sakaiya1 and H. Azechi1
1 Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan
2 Geodynamics Research Center, Ehime University, Matsuyama, Ehime 790-8577, Japan
Sound velocity of laser-irradiated iron foils was measured with side-on x-ray radiograph technique. Iron foils were irradiated with two-stepped laser pulse to reach earth's core condition. We measured not only the sound velocity but also temperature, pressure, shock velocity, compressibility, and particle velocity. The experimental parameters of temperature and pressure were very close to the earth's core condition. The experimental results on the sound velocity are in good agreements with previous experimental results and one-dimensional simulation results.
© EDP Sciences 2006