HR: 1340h
AN: SH43A-1089    [Abstracts]
TI: The Role of Collisions and Charge Exchange in Determining Heliospheric Structure
AU: * Heerikhuisen, J
EM: jacobh@ucr.edu
AF: Institute of Geophysics and Planetary Physics, University of California at Riverside, Riverside, CA 92521 United States
AU: Florinski, V
EM: vflorins@citrus.ucr.edu
AF: Institute of Geophysics and Planetary Physics, University of California at Riverside, Riverside, CA 92521 United States
AU: Zank, G P
EM: zank@ucr.edu
AF: Institute of Geophysics and Planetary Physics, University of California at Riverside, Riverside, CA 92521 United States
AU: Mueller, H R
EM: Hans.Mueller@Dartmouth.EDU
AF: Department of Physics and Astronomy, Dartmouth College, Hanover, NH 03755 United States
AB: The interaction of the solar wind with the interstellar medium is strongly mediated by the presence of interstellar hydrogen atoms. The coupling of atoms to plasma is generally assumed to be via the process of charge exchange. However the cross-sections of H-H and H-p collisions are of similar magnitude to the charge-exchange cross-section, so that including collisions may affect the overall solution. We describe a newly developed Monte-Carlo approach of modeling interstellar hydrogen atoms impinging on the heliosphere is discussed. We present some preliminary results of simulations here charge exchange and collisions are considered and compare these to charge exchange only runs.
DE: 7837 Neutral particles
DE: 7843 Numerical simulation studies
DE: 2151 Neutral particles
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2004 AGU Fall Meeting