Particle-in-cell techniques for the study of space charge effects in an electrostatic ion beam trap

Dhanoj Gupta, Raj Singh, Ryan Ringle, Catherine R. Nicoloff, Igor Rahinov, Oded Heber, Daniel Zajfman

Research output: Contribution to journalArticlepeer-review


We developed a simulation technique to study the effect of space charge interaction between trapped ions in the electrostatic ion beam trap (EIBT). The importance of space charge is demonstrated in both the dispersive and the self-bunching regime of the ion trap. The simulation results provide an estimate for the space charge effect on the trapping efficiency. They also allow for a better understanding of the enhanced diffusion and the self-bunching effect and provide a better characterization of the EIBT as a mass spectrometer, where peak coalescence is important. The numerical results reproduce all experimental data, demonstrating the critical importance of including space charge effects, even at low ion density, to understand the ion trap dynamics.

Original languageEnglish
Article number065202
JournalPhysical Review E
Issue number6
StatePublished - Dec 2021

Bibliographical note

Funding Information:
D.G. acknowledges financial support from a Dean of Faculty Fellowship of the Weizmann Institute of Science. R.R. and C.N. acknowledge support from the US National Science Foundation through Grants No. PHY-1565546 and No. PHY-2111185. Computational resources and services were provided by the Institute for Cyber-Enabled Research at Michigan State University. This research was supported by the ISRAEL SCIENCE FOUNDATION (Grant No. 1214/17).

Publisher Copyright:
© 2021 American Physical Society.


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