Two types of highly efficient electrostatic traps for single loading or multi-loading of polar molecules  

作　　者：Bin Wei Hengjiao Guo Yabing Ji Shunyong Hou Jianping Yin 魏斌;郭恒娇;纪亚兵;侯顺永;印建平(State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200062,China)

机构地区：[1]State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200062,China

出　　处：《Chinese Physics B》2020年第4期284-291,共8页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11834003,91536218,11034002,11274114,11504112,and 11874151);the National Key Basic Research and Development Program of China(Grant No.2011CB921602);the Fundamental Research Funds for the Central Universities,China,Shanghai Pujiang Talents Plan,China(Grant No.18PJ1403100);Exploration Funds from the Shanghai Natural Science Foundation,China(Grant No.18ZR1412700)。

摘　　要：Two novel electrostatic traps named octopole-based disk electrostatic trap(ODET)and tubular-based disk electrostatic trap(TDET)are proposed for trapping cold polar molecules in low-field-seeking states.Using MgF as the target molecule,single loading and multi-loading methods are numerically simulated with varied incident velocities of slow molecular beams in the two types of traps,respectively.In ODET,with an incident velocity of 10 m/s,a highest loading efficiency of 78.4% or 99.9% has been achieved under the single loading or multi-loading operation mode.In TDET,with an incident velocity of 11 m/s,a highest loading efficiency of 81.6% or 106.5% has been achieved using the two loading methods,respectively.With such high loading efficiencies,the trapped cold molecules can be applied in the researches of cold collisions,high precision spectroscopy,and precision measurements.Especially,together with a blue-detuned hollow beam,the new electrostatic traps proposed here offer a new platform for the following gradient-intensity cooling of MgF molecules,which may provide a new way to produce high density ultracold molecules.

关 键 词：cold MOLECULES ELECTROSTATIC TRAPPING MONTE Carlo simulations 

分 类 号：O441.5[理学—电磁学] O561[理学—物理]