Low frequency magnetic fluctuations generated by solar wind/cometary ion distributions cause pitch-angle scattering of cometary ions. The nature of this pitch angle scattering is examined by means of one-dimensional hybrid simulations, in which newborn ions are created at a constant rate, and for various injection angles, &agr;, relative to the magnetic field. Pitch angle scattering in the quasi-perpendicular regime (&agr;>60¿) results in a bispherical velocity distribution while in the quasi-parallel regime (0≤&agr;≤60¿), pitch angle scattering can result in either a mono or bispherical distribution depending on the injection angle and initial beam velocity. ¿American Geophysical Union 1991