Growth timescale τ_g, m (in the units of dynamical or free-fall time t_ff) and the preferred fragmentation mass M_g, m (in the units of preferred thermal fragmentation mass M_T, m) of the most unstable mode as a function of the normalized mass-to-flux ratio (μ₀). The model utilizes the standard ionization fraction corresponding to a normalized neutral–ion collision time . The shaded and unshaded zones represent the subcritical (μ₀ < 1) and supercritical (μ₀ > 1) regimes, respectively. The present paper focuses on the (mildly) supercritical regime.