Alignment in magnetic sub-level populations of excited atomic hydrogen formed by single-electron capture from metal surfaces

28th International Conference on Photonic, Electronic and Atomic Collisions

Kato, Daiji^1 ; Sakaue, Hiroyuki A.^1 ; Kenmotsu, Takahiro^2 ; Sakai, Yasuhiro^3 ; Motohashi, Kenji^4

National Institute for Fusion Science, Toki, Gifu

509-5292, Japan^1

Doshisha University, Kyotanabe, Kyoto

610-0321, Japan^2

Toho University, 2-2-1 Miyama, Funabashi, Chiba

274-8510, Japan^3

Toyo University, 2100 Kujirai, Kawagoe, Saitama

350-8585, Japan^4

关键词: Atomic hydrogen;    Electric dipole;    Level populations;    Negative polarization;    Polarization degree;    Single electron capture;    Surface normals;    Translation velocity;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/13/132012/pdf
DOI  :  10.1088/1742-6596/488/13/132012

来源: IOP

【 摘 要 】

We investigated alignment in magnetic sub-level populations of excited atomic hydrogen formed by single-electron capture from a W surface. The alignment and liner polarization degrees of electric-dipole photons are calculated at various translation velocities of the excited H atoms above the surface. Negative polarization degrees are obtained for 2p-1s and 3d-2p lines from the excited H atoms receding along surface normal at velocities smaller than the Bohr velocity.