SV.acceleration_exponent
The power-law acceleration exponent (i.e. \(\alpha\)) of a line driven wind in a Shlosman & Vitello (SV) CV disk wind model. Sets the length scale over which the acceleration to \(v_{\infty}\) is accomplished. When equal to 1, the results resemble those of a linear velocity law. Typically for an SV type wind, this power law exponent is 1.5.
\[v_l = v_o + (v_{\infty}(r_o)-v_o) \left[\frac {(l/R_v)^{\alpha}}{(l/R_v)^{\alpha}+1}\right]\]
Equation (2) Shlosman & Vitello 1993, ApJ 409, 372.