High-pressure elastic properties of liquid and solid neon to 7 GPa

By using in situ high-pressure Brillouin spectroscopy in a diamond-anvil cell, we have determined the pressure dependence of acoustic velocities, adiabatic elastic moduli, bulk modulus, and elastic anisotropy of liquid and solid neon at pressures up to 7 GPa and 296 K through its liquid-solid phase transition point at 4.6 GPa. We investigate the characteristics of high-pressure elastic properties of the rare-gas solid neon by comparing to previous experiments of heavier elements, argon and krypton, and with recent theoretical calculations.