Space charge effect

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Space charge effect
Result of mutual repulsion of particles of like charge (ions, electrons, etc.) that can limit the current in a charged-particle beam and can also cause some motion of ions in a beam or packet in addition to that caused by external fields.
Note: Space charge effects on ion trajectories are most noticeable in ion trap instruments that confine large numbers of ions in a small volume.
Related Term(s):

J. F. J. Todd, R. M. Waldren, R. E. Mather. Int. J. Mass Spectrom. Ion Phys. 34, 325 (1980). ( )

From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013.

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