Mass-selective instability and resonance ejection modes for DIT with rectangular asymmetric wave shape.

IF 1.1 4区 化学 Q4 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL
European Journal of Mass Spectrometry Pub Date : 2024-06-01 Epub Date: 2024-08-07 DOI:10.1177/14690667241270234
A I Ivanov, A A Sysoev, N V Konenkov
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引用次数: 0

Abstract

We consider the operation of a digital linear ion trap with resonance radial ejection and mass selective instability modes. Periodic wave shape has a positive part with amplitude V+=V0 and duration 0.8T and negative part with amplitude V-=-4V0 and duration 0.2T, where T is the period. The mapping of the stability diagram, calculations of the well's depth and ion oscillations spectra are presented. The process of resonant excitation of ion oscillations by a dipole sinusoidal signal is studied, as well as ion ejection at the stability boundary. The trajectory method is used for this purpose. It is shown that the mass selectivity of dipole excitation is twice as large for rectangular wave shape compared to sinusoidal wave shape. Increasing the diameter of the round rods of the linear trap gives an increase in the resolving power. The possibility of DIT operation in mass-selective instability mode at the boundary point qb=0.39 is discussed.

具有矩形不对称波形的 DIT 的质量选择性不稳定性和共振喷射模式。
我们考虑了具有共振径向喷射和质量选择不稳定模式的数字线性离子阱的运行。周期波形的正波段振幅为 V+=V0,持续时间为 0.8T;负波段振幅为 V-=-4V0,持续时间为 0.2T,其中 T 为周期。报告介绍了稳定图的绘制、井深计算和离子振荡谱。研究了偶极正弦信号对离子振荡的共振激励过程,以及稳定边界的离子喷射。为此采用了轨迹法。结果表明,与正弦波形相比,矩形波形的偶极子激发的质量选择性是正弦波形的两倍。增加线性阱圆棒的直径可提高分辨能力。讨论了 DIT 在边界点 qb=0.39 的质量选择不稳定模式下运行的可能性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
2.40
自引率
7.70%
发文量
16
审稿时长
>12 weeks
期刊介绍: JMS - European Journal of Mass Spectrometry, is a peer-reviewed journal, devoted to the publication of innovative research in mass spectrometry. Articles in the journal come from proteomics, metabolomics, petroleomics and other areas developing under the umbrella of the “omic revolution”.
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