Enhanced Loading of ^(40)K from Natural Abundance Potassium Source with a High Performance 2D^+ MOT  

作　　者：杨江陵 龙云 高威威 晋兰 左战春 王如泉 

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences [2]School of Physical Sciences, University of Chinese Academy of Sciences

出　　处：《Chinese Physics Letters》2018年第3期22-24,共3页中国物理快报（英文版）

基　　金：Supported by the National Key Research and Development Program of China under Grant Nos 2016YFA0300600 and2016YFA0301500;the National Natural Science Foundation of China under Grant Nos 11474347,61227902 and 61775232

摘　　要：40K is one of the most important atomic species for ultra-cold atomic physics. Due to the extremely low con- centration （0.012%） of 40K in natural abundance of potassium, most experiments use 4-10% enriched potassium source, which have greatly suffered from the extremely low annual production and significant price hikes in recent years. Using naturally abundant potassium source, we capture 5.4 × 10 6 cold 40K atoms with the help of a high performance of two-dimensional magneto-optical trap （2D＋ MOT）, which is almost three orders of magnitude greater than previous results without the 2D＋ MOT. The number of the 40K atoms is sufficient for most ultra-cold 40K experiments, and our approach provides an ideal alternative for the field.40K is one of the most important atomic species for ultra-cold atomic physics. Due to the extremely low con- centration （0.012%） of 40K in natural abundance of potassium, most experiments use 4-10% enriched potassium source, which have greatly suffered from the extremely low annual production and significant price hikes in recent years. Using naturally abundant potassium source, we capture 5.4 × 10 6 cold 40K atoms with the help of a high performance of two-dimensional magneto-optical trap （2D＋ MOT）, which is almost three orders of magnitude greater than previous results without the 2D＋ MOT. The number of the 40K atoms is sufficient for most ultra-cold 40K experiments, and our approach provides an ideal alternative for the field.

关 键 词：Enhanced Loading of MOT K from Natural Abundance Potassium Source with a High Performance 2D 

分 类 号：O562[理学—原子与分子物理] P588.14[理学—物理]