The influence of f-type function in positron-He/positron-H2 scattering with the Schwinger multichannel method |
| |
Authors: | Sd’A Sanchez MAP Lima |
| |
Affiliation: | Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Unicamp, 13083-970 Campinas, São Paulo, Brazil |
| |
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: | 34 85 +x 78 70 Bj |
本文献已被 ScienceDirect 等数据库收录! |
|