Abstract
From the viewpoint of g-jitter effect on the diffusion coefficient of fine particles, the particle migration by non-stochastic Brownian force was numerically discussed with the report of shuttle mission STS-85 regarding the increase of diffusion coefficient in micro-gravity field. In the numerical analysis, a physical model based on the generalized Langevin equation was constructed for the evaluation of dynamic light scattering. Most results showed no increase in the diffusion coefficient within the framework of our model, but some types of particle migration with oscillatory acceleration by the g-jitter effect at very low frequency still indicated a possibility on such a boost for the diffusion coefficient.
