6.8 Di ffus i on Mechan i sm .. Flick's law in microscop ic form 1. One dimensional diffusion F I: jump frequency period T: probability of atom jumping to nearest position§6.8 Diffusion Mechanism ◆ Ⅰ.Flick's law in microscopic form 1. One dimensional diffusion. Γ: probability of atom jumping to nearest position   1 =  : jump frequency period