Angular distribution in the dissociation of H$_2$O by swift heavy ions

R. Cabrera-Trujillo
( Departments of Physics and Chemistry, University of Florida, Gainesville, FL 32611)

N. Stolterfoht
( Hahn-Meitner-Institut (HMI), Glienicker Str. 100,14109 Berlin, Germany )

Y. {\"O}hrn, E. Deumens, J.R. Sabin
( Departments of Physics and Chemistry, University of Florida, Gainesville, FL 32611)

In this work, we present calculations of the angular distribution of the products of the dissociation of water molecules when bombarded with He$^{q+}$ for projectile energies between 1 and 5 keV. Here $q=0,1,2$ is the charge of the incoming ion. Our theoretical results are based on the Electron-Nuclear Dynamics formalism (END)\footnote{ E. Deumens, A. Diz, R. Longo, and Y. {\"O}hrn, Rev. Mod. Phys. {\bf 66}, 917 (1994).} We present results for the dissociation cross section, charge transfer cross section, the stopping cross section (nuclear and electronic) for the projectiles, and the angular distribution of He$^{q+}$, H, OH, and O.

This work was supported by the Chemical Sciences, Geosciences and Biosciences Division,
Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy.

Submitted to DAMOP, May 2006 in Knoxville, TN.