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Asymmetric rectilinear ion trap with unidirectional ion ejection capability

机译：具有单向离子喷射能力的不对称直线离子阱

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摘要

In this paper, the shapes of the electrodes are modified based on a rectilinear ion trap to achieve unidirectional ejection of ions. The designed asymmetric rectilinear ion trap (ARIT) analyzer adds convex and concave circular structures with a height of 0.5 mm on the two X-electrodes, so that the electric field center of the ion trap is inclined to the concave side. The electric field lines of the convex side are compressed to the concave side. Both simulations and experimental results show that ions are more likely to emit from the slit on the concave side plate when performing ion resonance ejection. The mass spectrum signal intensity can reach more than twice that of the original rectilinear trap when using only one detector. Calculations of the electric field components in the trap show that the even-order higher field proportion in the ion trap has not been significantly affected. Combined with the experimental test results, the study further confirmed that the developed ARIT has no significant loss in mass resolution, tandem mass spectrometry capability, and quantitative analysis capability. The proposed asymmetric structure modification scheme can achieve single-side ejection without significantly affecting other performances of the analyzer, which provides a new idea for the structural optimization of the subsequent ion trap analyzers.
机译：在本文中，基于直线离子疏水阀改变电极的形状，以实现离子的单向喷射。设计的不对称直线离子阱（Arit）分析仪在两个X电极上加入高度为0.5mm的凸起和凹入圆形结构，使得离子阱的电场中心倾斜于凹面。凸侧的电场线被压缩到凹面。两者仿真和实验结果都表明，在执行离子共振喷射时，离子更容易从凹入侧板上的狭缝发射。当仅使用一个检测器时，质谱信号强度可以达到原始直线陷阱的两倍以上。陷阱中的电场分量的计算表明，离子阱中的均衡级较高场比例尚未受到显着影响。结合实验测试结果，该研究进一步证实，发育的术局在质量分辨率，串联质谱能力和定量分析能力中没有显着损失。所提出的不对称结构修改方案可以实现单面喷射，而不会显着影响分析仪的其他性能，这为后续离子阱分析仪的结构优化提供了新的思路。

著录项

  • 来源
    《Journal of mass spectrometry: JMS》 |2020年第10期|共7页
  • 作者

    Huo Xinming; Chen Dong; Tian Yuan; Li Man; Yu Quan; Guo Chengan; Wang Xiaohao;

  • 作者单位

    Tsinghua Univ Tsinghua Shenzhen Int Grad Sch Div Adv Mfg Shenzhen 518055 Peoples R China;

    Tsinghua Univ Tsinghua Shenzhen Int Grad Sch Div Adv Mfg Shenzhen 518055 Peoples R China;

    Tsinghua Univ Tsinghua Shenzhen Int Grad Sch Div Adv Mfg Shenzhen 518055 Peoples R China;

    Tsinghua Univ Tsinghua Shenzhen Int Grad Sch Div Adv Mfg Shenzhen 518055 Peoples R China;

    Tsinghua Univ Tsinghua Shenzhen Int Grad Sch Div Adv Mfg Shenzhen 518055 Peoples R China;

    Shenzhen CHIN Instrument Co Ltd Mass Spectrometry Res Ctr Shenzhen 518052 Peoples R China;

    Tsinghua Univ Tsinghua Shenzhen Int Grad Sch Div Adv Mfg Shenzhen 518055 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 分析化学;
  • 关键词

    asymmetric structure; electric field distribution; sensitivity; unidirectional ion trap;

    机译：非对称结构;电场分布;灵敏度;单向离子阱;

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