Abstract
Chemistry in the ultracold regime enables fully quantum-controlled interactions between atoms and molecules, leading to the discovery of the hidden mechanisms in chemical reactions which are usually curtained by thermal averaging in the high temperature. Recently a couple of diatomic molecules have been cooled to ultracold regime based on laser cooling techniques, but the chemistry associated with these simple molecules is highly limited. In comparison, free radicals play a major role in many important chemical reactions, but yet to be cooled to submillikelvin temperature. Here we propose a novel method of decelerating CH3, the simplest polyatomic free radical, with lithium atoms simultaneously by travelling wave magnetic decelerator. This scheme paves the way towards co-trapping CH3 and lithium, so that sympathetical cooling can be used to preparing ultracold free radical sample.
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Acknowledgements
Yang Liu and Le Luo acknowledge helpful suggestion and discussion from Jiaming Li. Yang Liu acknowledges the financial support from the National Natural Science Foundation of China (NSFC) under Grant No. 11974434, the Fundamental Research Funds for the Central Universities of Education of China under Grant No. 191gpy276, the Natural Science Foundation of Guangdong Province under Grant No. 2020A1515011159. Le Luo received supports from NSFC under Grant No. 11774436, Guangdong Province Youth Talent Program under Grant No. 2017GC010656, Sun Yat-sen University Core Technology Development Fund, and the Key-Area Research and Development Program of GuangDong Province under Grant No. 2019B030330001.
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Liu, Y., Luo, L. Simultaneous Zeeman deceleration of polyatomic free radical with lithium atoms. Front. Phys. 16, 12504 (2021). https://doi.org/10.1007/s11467-020-1003-3
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DOI: https://doi.org/10.1007/s11467-020-1003-3