Author/Authors :
Nakahata، نويسنده , , I. and Matsui، نويسنده , , N. and Akahama، نويسنده , , Y. and Kawamura، نويسنده , , H.، نويسنده ,
Abstract :
High-pressure X-ray powder diffraction measurements for solid methane were performed at pressures up to 13 GPa. The diffraction pattern at 7.0 GPa is assigned to a rhombohedral lattice with lattice constants of a=8.643(1) Å and α=89.40(2)° and with a unit cell that contains 21 molecules. The bulk modulus of the rhombohedral phase is estimated to be 7.9(3) GPa.
