| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1686349 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2008 | 5 Pages |
Abstract
In this paper we present results for positron-Helium and positron-H2 scattering with the inclusion of the f-type Cartesian Gaussian functions in our computer codes of the Schwinger multichannel method (SMC). The effects of this modification can be noticed in the integral cross-section for both studied targets, with our new curves being closer to the most recent experimental measurements. The inclusion of the f-type function in the scattering wave function expansion also helped us to obtain a better set of results with the SMC method for the annihilation parameter. Data for differential cross-section (DCS) for helium is presented as well as our improvement in the DCS data in the forward scattering angles for the hydrogen molecule.
Keywords
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Authors
S.d'A. Sanchez, M.A.P. Lima,