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

AS Kadyrov, I Bray - Journal of Physics B: Atomic, Molecular and …, 2016 - iopscience.iop.org
Much progress in the theory of positron scattering on atoms has been made in the ten years
since the review of Surko et al (2005 J. Phys. B: At. Mol. Opt. Phys. 38 R57). We review this …

Many-body theory calculations of positron scattering and annihilation in noble-gas atoms via the solution of Bethe–Salpeter equations using the Gaussian-basis code …

J Hofierka, CM Rawlins, B Cunningham… - Frontiers in …, 2023 - frontiersin.org
Scattering phase shifts and annihilation rates for low-energy positrons interacting with noble
gas atoms are calculated ab initio using many-body theory implemented in the Gaussian …

Implementation of a model potential in the Schwinger multichannel method to describe polarization in positron-atom and-molecule scattering: Studies for the noble …

FF Frighetto, AS Barbosa, SA Sanchez - Physical Review A, 2023 - APS
In this study, we evaluated a polarization scheme within the framework of the Schwinger
multichannel method, using a model potential to describe positron-molecule polarization …

Positron scattering and annihilation on noble-gas atoms

DG Green, JA Ludlow, GF Gribakin - Physical Review A, 2014 - APS
Positron scattering and annihilation on noble-gas atoms is studied ab initio using many-
body theory methods for positron energies below the positronium formation threshold. We …

A positron trap and beam apparatus for atomic and molecular scattering experiments

JP Sullivan, A Jones, P Caradonna… - Review of Scientific …, 2008 - pubs.aip.org
An instrument has been designed and constructed to provide new insights into fundamental,
low energy positron scattering processes. The design is based on the Surko trap system and …

[HTML][HTML] Recommended positron scattering cross sections for atomic systems

K Ratnavelu, MJ Brunger, SJ Buckman - Journal of Physical and …, 2019 - pubs.aip.org
We present a critical analysis of available experimental and theoretical cross section data for
positron scattering from atomic systems. From this analysis, we present (where data are …

Total and positronium formation cross sections for positron scattering from H2O and HCOOH

C Makochekanwa, A Bankovic, W Tattersall… - New Journal of …, 2009 - iopscience.iop.org
Total and positronium formation cross sections have been measured for positron scattering
from H 2 O and HCOOH using a positron beam with an energy resolution of 60 meV (full …

Adiabatic-nuclei calculations of positron scattering from molecular hydrogen

MC Zammit, DV Fursa, JS Savage, I Bray, L Chiari… - Physical Review A, 2017 - APS
The single-center adiabatic-nuclei convergent close-coupling method is used to investigate
positron collisions with molecular hydrogen (H 2) in the ground and first vibrationally excited …

Recent positron-atom cross section measurements and calculations

L Chiari, A Zecca - The European Physical Journal D, 2014 - Springer
We review recent cross section results for low-energy positron scattering from atomic targets.
A comparison of the latest measurements and calculations for positron collisions with the …

Positron scattering and annihilation from helium at low energies

XJ Li, MS Wu, J Jiang, CZ Dong, JY Zhang, ZC Yan… - Physical Review A, 2023 - APS
The confined variational method is used to study the elastic scattering of the positron from
the ground-state helium with the scattering energy in the range from 0.05 eV to 11.02 eV …