Authors: Rachael Filwett (Montana State University), Robert Allen (Applied Physics Laboratory), Gang Li (University of Alabama Huntsville), Maher Dayeh (Southwest Research Institute)

The suprathermal particle population in the heliosphere is made up of many different components, accelerated solar wind, low-energy energetic particles from a wide range of sources, and interstellar pick-up ions. These pick-up ions, particularly Helium, are well understood to undergo focusing as they enter the heliosphere before they are picked up in the solar wind. In order to understand the proportionality that pick-up ions make in the total suprathermal ion population we measure the He suprathermal population in coronal mass ejections around the focusing cone and report on their relative phase space density. This investigation begins to unravel what proportion of the suprathermal population can be attributed to each source.