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Quantum state-dependent anion-neutral detachment processes
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DOI：10.1063/5.0082734.png)
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摘要
En 中文
The detachment loss dynamics between rubidium atoms (Rb) and oxygen anions (O-) are studied in a hybrid atom-ion trap. The amount of excited rubidium present in the atomic ensemble is actively controlled, providing a tool to tune the electronic quantum state of the system and, thus, the anion-neutral interaction dynamics. For a ground state Rb interacting with O-, the detachment induced loss rate is consistent with zero, while the excited state Rb yields a significantly higher loss rate. The results are interpreted via ab initio potential energy curves and compared to the previously studied Rb-OH- system, where an associative electronic detachment reactive loss process hinders the sympathetic cooling of the anion. This implies that with the loss channels closed for ground-state Rb and O- anion, this system provides a platform to observe sympathetic cooling of an anion with an ultracold heavy buffer gas. Published under an exclusive license by AIP Publishing.
Keyword:
ASSOCIATIVE DETACHMENT
NEGATIVE-IONS
REACTIVE SCATTERING
ELECTRON DETACHMENT
COLLISIONS
PHOTODETACHMENT
DYNAMICS
H-2
期刊
IF:
3.1
论文数:
7.2W
被引数:
23.2W
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