Rotational relaxation of rigid dipolar molecules in nonlinear dielectric spectra

We present complete nonlinear dielectric spectra for a rigid dipolar molecule in dilute solution. The spectra are described theoretically by dispersions of the form as predicted by Coffey and Paranjape [Proc. R. Ir. Acad. 78, 17 (1978)] and by Alexiewicz and Kasprowicz-Kielich [Modern Nonlinear Optics, edited by hi. Evans and S. Kielich (Wiley, New York, 1993), Vol. 85, pt. 1, p. 1] and are consistent with linear dielectric measurements. [S1063-651X(98)09602-0].