STUDY OF DISTRIBUTION-FUNCTIONS OF INTERPLANETARY PARTICLES ACCELERATED AT CO-ROTATING INTERACTION REGION AT APPROXIMATE-TO-5A.U

We report the results of a study of the 12-hour average distribution f unctions of high Z nuclei as measured over a 10-day interval on the Ul ysses spacecraft at a helioradius of similar to 5.2 A.U. We use the go od time and atomic mass resolution of the composition aperture of the HI-SCALE instrument to determine the form of the distribution function s for C, O, Ne, Mg, Si, and Fe over the energy range similar to 0.5 - 16 MeV/nucl. We find that the distribution functions of these ions can be organized by characteristic velocities that have values ranging be tween similar to 2000- 3500 km/sec over this interval.