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

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... 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.