Abstract
The induced image charge and image current acquired by a detector tube for mass analysis are simulated using a numerical electrostatic model in the context of the electrostatic ion beam trap (EIBT). With the simulation results, the principle of mass analysis using the induced signal is demonstrated and studied systematically. The results show that the intensity of the detected signal is significantly influenced by the size and configuration of the detector, and also impacted by ion velocity, the number of ions in the ion group, and the ion beam length. The simulation results could not only be used to optimize the size and configuration of the detector and thus to improve the detected signal, but also to support the signal analysis (such as FFT) at an EIBT for mass spectrometry.
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