Kinetic Energy of Trapped Ions Cooled by Buffer Gas

作     者：CHEN Liang SHE Lei LI Jiao-Mei GAO Ke-Lin 

作者机构：State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics Chinese Academy of Sciences Wuhan 430071 Center for Cold Atom Physics Chinese Academy of Sciences Wuhan 430071 Graduate School of the Chinese Academy of Sciences Beijing 100049 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2010年第27卷第6期

页      面：82-84页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0803[工学-光学工程] 080101[工学-一般力学与力学基础] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Supported by the National Basic Research Program of China under Grant No 2005CB724500  and the National Natural Science Foundation of China under Grant Nos 60490280 and 10874205 

主　　题：STOPPING power (Nuclear physics) ION traps CALCIUM ions EVAPORATION (Chemistry) VAPOR pressure BROWNIAN motion processes 

摘      要：The average kinetic energy of 40 Ca＋ ions is measured by the method of evaporating ions in an rf ion trap. The kinetic energy of the ion 40Ca＋ varies from 0.5eV to 0.2eV with changing buffer gas pressure from 10^-7 mbar to 10^-5 mbar. The Brownian motion model is also introduced to calculate the average kinetic energy of the trapped ions.