A simulation study of excitation contour of a linear trap with spatial harmonics.

IF 1.1 4区 化学 Q4 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL
European Journal of Mass Spectrometry Pub Date : 2021-04-01 Epub Date: 2021-05-26 DOI:10.1177/14690667211020153
N V Konenkov
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引用次数: 2

Abstract

The process of nonlinear resonant excitation of ion oscillations in a linear trap is studied. There is still no detailed simulation of the resonance peak in the literature. We propose to use the excitation contour to describe the collective ion resonance. The excitation contour is a resonant mass peak obtained by the trajectory method with the Gaussian distribution of the initial coordinates and velocities. The following factors are considered: excitation time, low order hexapole and octopole harmonics with amplitudes A3 and A4, the depth of the initial ion cloud position. These multipoles are used for selective ion ejection from linear ion trap. All these factors affect the ion yield and the shape of the contours. Obtained data can be useful for control of such processes as ion fragmentation, ion isolation, ion activation, and ion ejection. Simulated resonance peaks are important for the theoretical description of the ion collective nonlinear resonances.

具有空间谐波的线性阱激励轮廓的仿真研究。
研究了线性阱中离子振荡的非线性共振激发过程。目前文献中还没有对共振峰进行详细的模拟。我们提出用激发轮廓来描述集体离子共振。激励轮廓是用轨迹法得到的质量共振峰,初始坐标和速度呈高斯分布。考虑以下因素:激发时间、振幅为A3和A4的低阶六极和八极谐波、初始离子云位置的深度。这些多极用于从线性离子阱中选择性地射出离子。所有这些因素都影响离子产率和轮廓的形状。所获得的数据可用于离子破碎、离子分离、离子活化和离子喷射等过程的控制。模拟共振峰对于离子集体非线性共振的理论描述具有重要意义。
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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