Charged particle radial gradients in the inner heliosphere (1-5 AU) during the rise to maximum of solar cycle 23
C.G. Maclennan and L.J. Lanzerotti
	Bell Laboratories, Lucent Technologies, Murray Hill, NJ USA
R.B. Decker, R.E. Gold, S.E. Hawkins, III, and D. Haggerty
	Johns Hopkins University/Applied Physics Lab, Laurel, MD USA

The beginning and rise to maximum of solar cycle 23 has the Ulysses spacecraft fortuitously placed at ~5 AU near the ecliptic plane and on a trajectory toward the southern heliosphere pole. The twin instruments, HI-SCALE on Ulysses and EPAM on the ACE spacecraft (at 1 AU), provide an opportunity at this time in the solar cycle to investigate the spatial distribution of charged, solar-produced particles in the near-ecliptic heliosphere inside 5 AU. We report here examinations and comparisons of the composition (Z > 2 ions) of heliosphere particles with energies ~0.5-10 MeV/nucl during the years 1998 to the present as measured at these two locations. In particular, we compare the composition radial gradients between 1 and 5 AU as a function of helioradius and heliolatitude, as Ulysses begins its southward swing during its solar maximum mission. We also show comparisons of the ion composition as a function of heliolatitude for Ulysses first two orbits over the same southern heliolatitude range.