FIG. 11: Growth rate Re(γ) vs. kz for the TC flow with the wide gap, η̂ = 0.5, and the inner cylinder at rest. Panel (a) focuses on Pm ≪ 1, with solid lines having fixed β = 1, S = 4 and Rm = 20 but different Pm, dot-dashed line β = 2, S = 8, Rm = 80, Pm = 10−5, and dashed line β = 3, S = 12, Rm = 180, Pm = 10−5. Panel (b) focuses on Pm ≫ 1, with solid lines having fixed β = 1, Ha = 1600 and Re = 8 · 104 but different Pm, dot-dashed line β = 0.4, Ha = 640, Re = 1.28 · 104, Pm = 500, and dashed line β = 0.5, Ha = 800, Re = 2 · 104, Pm = 500.
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