Velocity distribution functions of helium pickup ions around interplanetary shocks

Keiichi Ogasawara1, Harald Kucharek2, Maher A Dayeh3, Robert W Ebert1, Berndt Klecker4, Mark Popecki5, Antoinette Broe Galvin6, Mihir Indrajit Desai1 and Stefano A Livi7, (1)Southwest Research Institute, San Antonio, TX, United States, (2)Univ New Hampshire, Durham, NH, United States, (3)Southwest Research Institute San Antonio, San Antonio, TX, United States, (4)Max Planck Institut for Extraterrestrial Physics, Garching, Germany, (5)INCOM, Inc., Charlton, United States, (6)Univ of New Hampshire, Durham, NH, United States, (7)SwRI, San Antonio, TX, United States