Top panel: the radial distribution of ionization rate, at 2H from the midplane based on the new estimate of the cosmic-ray ionization rate (solid green) with ζ _ISM = 3 × 10⁻¹⁶ s⁻¹ using the effective column density along the elongated path, together with the contribution of X-ray (orange) and short-lived radionuclides (SLR; pink), is displayed with the thick blue curve. The conventional estimate of ζ _CR based on ζ _ISM = 10⁻¹⁷ s⁻¹ with Γ_detour = 1 (the dotted green line) makes up the thin blue curve of the conventional ionization rate. Middle panel: the same as with the top panel, but for the midplane of the disk. The dashed pink line is the ionization rate of the long-lived radionuclides (LLR). Bottom panel: the total ionization rate at z = 3H, 2H, 1H, and midplane using the cosmic-ray ionization rate of this work. The case with the absence of SLR and the estimate using the conventional cosmic-ray ionization rate are plotted in light blue and gray, respectively. The x-axis in each plot starts from 10 au.