2002 年 29 巻 2 号 p. 49-
In-situ observations of CO_2 hydrate and N_2 hydrate growth using a high-energy X-rays were done at high-pressures, and growth rates of each hydrate from ice particles were measured. Assuming a model of diffusion in the hydrate layers, mass-diffusion coefficients of guest molecules and H_2O molecules were calculated.