Figure 5. Phase Evolution of Elliptical Precession.
In the asymptotic limit (Eq. [14]), the nonlinear component of the phase evolution under a z2-(x2+y2) gradient can be described by precession about an ellipse. Here, we simulate just the nonlinear component of the phase evolution that would be expected for a slice centered at z=3cm evolving under a 100Hz/cm2 field.