Use of heavy-Rydberg ion-pair states to probe dissociative electron attachment

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

Kelley, M.^1 ; Buathong, S.^1 ; Dunning, F.B.^1

Department of Physics and Astronomy, MS-61, Rice University, Houston

TX, United States^1

关键词: Dissociative electron attachment;    Electron transfer;    Electrostatic attractions;    Ion-pair state;    Low energy electrons;    Measurements of;    Rydberg;    Rydberg atoms;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/1/012024/pdf
DOI  :  10.1088/1742-6596/635/1/012024

来源: IOP

【 摘 要 】

Electron transfer in collisions between Rydberg atoms and targets that attach free low-energy electrons can lead to the formation of heavy-Rydberg ion-pair states comprising a positive-negative ion pair that orbit each other at large separations weakly bound by their mutual electrostatic attraction. It is shown that measurements of the velocity distribution of the ion-pair states produced in such collisions provide a novel probe of the dynamics of dissociative electron attachment.