Low-energy positronium scattering from noble-gas atoms

29th International Conference on Photonic, Electronic, and Atomic Collisions

Swann, A.R.^1 ; Ludlow, J.A.^1 ; Gribakin, G.F.^1

Centre for Theoretical Atomic Molecular and Optical Physics, School of Mathematics and Physics, Queen's University Belfast, Belfast

BT7 1NN, United Kingdom^1

关键词: Ab initio;    Configuration interactions;    Low-energy;    Noble gas atoms;    Random phase approximation with exchanges;    Semi-empirical;    Van der waals;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/5/052032/pdf
DOI  :  10.1088/1742-6596/635/5/052032

来源: IOP

【 摘 要 】

van der Waals C6coefficients are calculated ab initio for positronium interactions with noble-gas atoms using the random-phase approximation with exchange (RPAE). These are scaled slightly to create our best predictions. Comparisons are made with existing configuration interaction and semi-empirical data.