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 therma...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 CH_(3),the simplest polyatomic free radical,with lithium atoms simultaneously by travelling wave magnetic decelerator.This scheme paves the way towards co-trapping CH_(3)and lithium,so that sympathetical cooling can be used to preparing ultracold free radical sample.展开更多
基金support from the National Natural Science Foundation of China(NSFC)under Grant No.11974434the Fundamental Research Funds for the Central Universities of Education of China under Grant No.191gpy276+2 种基金the Natural Science Foundation of Guangdong Province under Grant No.2020A1515011159Le Luo received supports from NSFC under Grant No.11774436,Guangdong Province Youth Talent Program under Grant No.2017GC010656Sun Yat-sen University Core Technology Development Fund,and the Key-Area Research and Development Program of GuangDong Province under Grant No.2019B030330001.
文摘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 CH_(3),the simplest polyatomic free radical,with lithium atoms simultaneously by travelling wave magnetic decelerator.This scheme paves the way towards co-trapping CH_(3)and lithium,so that sympathetical cooling can be used to preparing ultracold free radical sample.
