Computation of a generalized Nordsieck integral

In this work we introduce two analytical representations of a generalized Nordsieck integral. These integrals arise in the calculations of scattering properties of systems of Coulomb-charged particles using the natural base, which includes general solutions of the two-body Coulomb equation. We study...

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Autores principales: Bustamante, M.G., Miraglia, J.E., Colavecchia, F.D.
Formato: JOUR
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Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00104655_v171_n1_p40_Bustamante
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Sumario:In this work we introduce two analytical representations of a generalized Nordsieck integral. These integrals arise in the calculations of scattering properties of systems of Coulomb-charged particles using the natural base, which includes general solutions of the two-body Coulomb equation. We study the numerical convergence of these representations against the direct Fortran numerical integration. We test the performance of the different strategies as a function of the momentum transfer, which is typically a relevant variable in collision processes. We also discuss the advantages and disadvantages of the different approaches. © 2005 Elsevier B.V. All rights reserved.