Distortion of ion trajectories in a time-of-flight mass spectrometer: simulations and experiments with a position sensitive detector

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• 作者：Antoine ; R. ; Arnaud ; L. ; Abd El Rahim ; M. ; Rayane ; D. ; Broyer ; M. ; Dugourd ; Ph.
• 关键词：Mass spectrometry ; Time-of-flight ; Ion imaging
• 刊名：International Journal of Mass Spectrometry
• 出版年：2004
• 期刊代码：43_13873806
• 类别：ch
• 出版时间：December, 2004
• 卷：239
• 期：1
• 页码：1-6
• 文件大小：282 K

摘要

We used a position sensitive detector (PSD) to show the image of an ion packet at the end of a time-of-flight mass-spectrometer. The spread of the ion packet due to wires in the accelerator electrodes is directly observed on the image. A huge effect on the size and shape of the ion packet is observed. Experimental results are compared to SIMION simulations performed using a procedure developed to compute the trajectories of ions close to wires.