Experimental Planetary Physics

Our researches aim at understanding the structure, dynamics and evolution of terrestrial planets, through experimental and theoretical characterization of the physicochemical properties and phase equilibria of minerals and magmas, and their interaction with fluids.

In the field of mineral physics, we are experimentally measuring the elasticity, plasticity, electrical and thermal conductivity for minerals at high pressure and temperature, using Kawai-type multi-anvil apparatus and diamond anvil cell. Development of new experimental techniques to grow large single crystals is also in progress to ensure the highest-quality data from such measurements. In addition, in-situ determination of phase equilibria of minerals under high pressure and temperature is also being carried out at synchrotron radiation facility. Results from these studies form the basis for quantitative interpretations of seismological and geochemical observations.

In the field of physics and chemistry of planetary fluids, we are investigating the interaction of water with minerals and magmas under both ambient and high-pressure conditions with a combined experimental and theoretical approach, using spectroscopic techniques, such as NMR, IR, Raman and XAFS, and computer simulations, such as molecular orbital calculations. These studies not only shed light on the dissolution mechanisms and solubilities of water in minerals and magmas, but also have implications for a range of near-surface processes, such as weathering and environmental issues. In addition, we are also studying phase equilibria and physical properties of magma-water systems in-situ under high pressure and high temperature using synchrotron radiation. These combined studies would contribute to our understanding of important geological processes, such as magma generation and transportation.