Paul阱中囚禁离子信号直流抛出检测方法

Paul阱中囚禁离子信号直流抛出检测方法 Experimental Investigation of DC Ejecting Detection of Confined Ions in Paul Trap 白磊 BAI Lei 1 first-author 佘磊 SHE Lei 1 孙焕尧 SUN Huanyao 1 李交美 LI Jiaomei 1 中国科学院武汉物理与数学研究所/波谱与原子分子物理国家重点实验室 中国科学院武汉物理与数学研究所/波谱与原子分子物理国家重点实验室 Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences/State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences/State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics 在原有射频扫幅抛出检测方法的基础上,通过恒定射频场幅度仅增加直流电场幅度的方法实现了Paul阱中离子的抛出.采用的直流抛出方法成功地对囚禁在Paul阱中199Hg+离子进行了检测,并克服了射频扫幅抛出检测方法采集大质量数离子的信号的线性、精度、稳定度不理想的缺陷,采集到信号的信噪比较高,达到了100以上,这为获得囚禁离子的各种动力学参数提供了较好的实验数据. Based on the usual way of scanning the AC voltage,in this paper,a method of increasing the DC voltage with a constant AC voltage is developed to eject the trapped ions. By means of this DC ejecting method,the confined 199Hg+ has been detected successfully. And the imitations such as the bad linear of signal,imperfect precision and stability in the method of scanning the AC amplitude to detect the heavy mass ions were overcome. By this DC ejection method,the signals of trapped 199Hg+ ions are detected with higher SNR（up to 100） which supply the experimental data for us to obtain the dynamic parameters of trapped ions. 离子阱 抛出检测 信噪比 199Hg+ ion trap ejecting detection signal noise ratio（SNR） 199Hg+ 10.14188/j.1671-8836.2010.04.008 O562.4 国家高技术研究发展计划（863）项目（2007AA12Z304） 2010-04-01 2021-04-01 4 56