Snapshots of silicate particles at t = 10⁴ Ω⁻¹ (red dots), and the root mean square of z (blue solid curves) at each grid of x. The dashed blue curves are given by Eq. (35) with Δx_subl replaced by max(Δx_subl, |x|) (see thediscussion at the end of Sect. 4.3.2). The magenta curve represents log₁₀ (ρ_d∕ρ_g) near the midplane. We set α_acc = 10⁻², τ_s,d = 10⁻⁵, and f_d/p = 0.5, and Ṁ_g = 10⁻⁸M_⊙ yr⁻¹. The nine panels adopt different values of F_p/g and α_{D z} = α_Dr, as indicated in each panel.