The influence of f-type function in positron-He/positron-H2 scattering with the Schwinger multichannel method

Sanchez, S. d’A.; Lima, Marco A. P.

doi:10.1016/j.nimb.2007.12.022

Cited by 20 publications

(9 citation statements)

References 25 publications

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“…Comparing with experiment, the CCC results show [31], Moxom et al [32], Jacobsen et al [33], and Knudsen et al [34]. a substantial improvement on the Schwinger multichannel calculations of Sanchez and Lima [30], particularly at the forward angles. Nevertheless, some discrepancy remains.…”

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confidence: 80%

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Convergent-close-coupling formalism for positron scattering from molecules

2013

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The ab initio convergent-close-coupling method has been extended to positron-molecule collisions within the adiabatic (fixed-nuclei) approximation. Application to molecular hydrogen at energies from 0.1 to 1000 eV has yielded convergent total ionization and grand total cross sections over most of the energy range. We find that very large calculations are required for convergence, even in the case of low-energy elastic scattering, due to the effects of positronium formation. In general, the comparison with experiment is good.

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confidence: 80%

“…(Color online) Elastic differential cross sections for positron scattering from the ground state of H 2 at an impact energy of 0.5 eV. The CCC results (see text) are compared with the calculations of[30] and the measurements of[29].…”

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confidence: 99%

Convergent-close-coupling formalism for positron scattering from molecules

2013

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“…Rearrangement processes add another degree of complexity to the problem. Until recently theoretical studies [48,[182][183][184][185][186][187][188][189][190][191][192][193][194] have been focused only at certain energy regions. In addition, there are few theoretical studies which include the Ps-formation channels explicitly.…”

Section: Positron Scatteringmentioning

confidence: 99%

Recent progress in the description of positron scattering from atoms using the convergent close-coupling theory

Kadyrov

Bray

2016

J. Phys. B: At. Mol. Opt. Phys.

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Much progress in the theory of positron scattering on atoms has been made in the ten years since the review of Surko et al. [1]. We review this progress for few-electron targets with a particular emphasis on the two-centre convergent close-coupling and other theories which explicitly treat positronium (Ps) formation. While substantial progress has been made for Ps formation in positron scattering on few-electron targets, considerable theoretical development is still required for multielectron atomic and molecular targets.

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“…It has been well described elsewhere [29][30][31][32][33] and so only the main aspects will be highlighted here. The final working expression to …”

Section: Theoretical Detailsmentioning

confidence: 99%