@article{faced0f4734348a2b009b3cb84bab96d,
title = "Modeling dynamical correlation forces in low-energy positron scattering from polyatomic gases: A comparison for CH4",
abstract = "Two different models for treating the contributions of dynamical electron-positron correlation forces to the full interaction between low-energy positron beams scattered off polyatomic gases are considered and applied to obtain the elastic integral and differential cross sections (at collision energies below Ps formation) for the methane molecule. The computed quantities are then compared with available experiments, both for integral and differential data, and found to be in good accord with measured quantities. Both models also agree rather closely with each other and the physical reasons for this behavior are briefly discussed.",
keywords = "Correlation forces, Molecular gases, Positron scattering",
author = "Gianturco, {F. A.} and Gibson, {T. L.} and P. Nichols and Lucchese, {R. R.} and T. Nishimura",
note = "Funding Information: R.R.L. Wishes to thank the Welch Foundation (Houston) for its financial support under grant no. A-1020 and to acknowledge the support of Texas A&M University Supercomputing Facility. T.L.G. and P.N. are also grateful from support from the Robert A. Welch Foundation under grant no. D-1316 and would like to thank Mr. Lee Burnside for his expertise in constructing and running the Beowulf cluster. F.A.G. and T.N. thank the Max-Planck Society for financial support of T.N. during his stay in Rome and the Italian Ministry for University and Research (MUIR) for its financial support through one of its PRIN projects.",
year = "2003",
doi = "10.1016/S0969-806X(03)00198-1",
language = "English",
volume = "68",
pages = "673--680",
journal = "Radiation Physics and Chemistry",
issn = "0969-806X",
number = "3-4",
}