An investigation of the scaling of plane-wave born cross sections for positron-H-2 considering the positronium-formation channel

摘要

Cross sections for positron-H-2 scattering using positronium formation have been studied using the scaled plane-wave Born approximation, originally proposed by Kim Y. K. Kim, Phys. Rev. A 64, 032713 (2001) for electron scattering. The modified scaling for positron scattering is simpler than the scaling for electron scattering. Moreover, the former converts the present first Born approximation into accurate results comparable to the convergent close coupling results. Comparisons to available theoretical and experimental data on positron-H-2 scattering are presented. (C) 2016 Published by Elsevier B.V. on behalf of The Physical Society of the Republic of China (Taiwan).