State purified deceleration of SD radicals by a Stark decelerator

Nourbakhsh, O.; Michan, J.M.; Mittertreiner, T.; Carty, D.; Wrede, E.; Djuricanin, P.; Momose, T.

Abstract

Deceleration of supersonic beams of SD radicals by a linear Stark decelerator was demonstrated for the first time. SD radicals produced by an electric discharge of supersonic beams mainly occupied the lowest two rotational states of and in the 2Π3/2 state. Laser-induced fluorescence of the decelerated beam showed that, due to the proximity of the Stark shift between these two rotational states, the final radical packet still contained both the and rotational states when the decelerator was operated at a constant phase below 50°. We show that by controlling the timing sequence of the Stark decelerator, it is possible to create a decelerated molecular packet containing only a single rotational state of either or of the SD radicals with a tunable velocity. The creation of a cold radical beam containing a single rotation–vibration state will be a useful tool for the study of cold collisions and reactions in the quantum regime.

Citation

Nourbakhsh, O., Michan, J., Mittertreiner, T., Carty, D., Wrede, E., Djuricanin, P., & Momose, T. (2015). State purified deceleration of SD radicals by a Stark decelerator. Molecular Physics, 113(24), 4007-4018. https://doi.org/10.1080/00268976.2015.1109151

• Journal Article Type: Article
• Acceptance Date: Oct 8, 2015
• Online Publication Date: Nov 20, 2015
• Publication Date: 2015-12
• Deposit Date: Oct 29, 2015
• Journal: Molecular Physics
• Print ISSN: 0026-8976
• Electronic ISSN: 1362-3028
• Publisher: Taylor and Francis Group
• Peer Reviewed: Peer Reviewed
• Volume: 113
• Issue: 24
• Pages: 4007-4018
• DOI: https://doi.org/10.1080/00268976.2015.1109151
• Public URL: https://durham-repository.worktribe.com/output/1398795