Vortex lines and surfaces in positron-atom ionization collisions

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

Navarrete, F.^1 ; Barrachina, R.O.^1

Centro Atómico Bariloche and Instituto Balseiro, Comisión Nacional de Energia Atómica, Universidad Nacional de Cuyo, Av. Bustillo 9500, Bariloche

8400, Argentina^1

关键词: Collinear geometry;    Ionization of atoms;    Multi-dimensional space;    Positron impacts;    Quantum vortex;    Single vortices;    Submanifolds;    Vortex lines;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/5/052014/pdf
DOI  :  10.1088/1742-6596/635/5/052014

来源: IOP

【 摘 要 】

We study the appearance of quantum vortices in the ionization of atoms by positron impact. We avoid the standard restrictions on the final-state variables, in order to study vortices as submanifolds of codimension 2 in the multidimensional space of definition of the T-matrix element. In particular we demonstrate that three isolated vortices previously observed under a collinear geometry, actually correspond to a two-dimensional cut on a single vortex line.