M. G. Skoblin, I. A. Kopaev, D. E. Greenfield, A. A. Makarov, M. A. Monastyrskiy, S. S. Alimpiev, “Influence of Coulomb effects on the resolving power of multireflection mass-spectrometer systems”, Kvantovaya Elektronika, 2015, Volume 45, Number 12,Pages <nobr>1171

Laser applications and other topics in quantum electronics

Influence of Coulomb effects on the resolving power of multireflection mass-spectrometer systems

M. G. Skoblin^a, I. A. Kopaev^b, D. E. Greenfield^c, A. A. Makarov^c, M. A. Monastyrskiy^b, S. S. Alimpiev^bd

^a Institute of Energy Problems for Chemical Physics, Russian Academy of Sciences (Chernogolovka Branch)
^b A.M. Prokhorov General Physics Institute Russian Academy of Sciences, Moscow
^c ThermoFisher Scientific (Bremen) GmbH, Germany, 28199 Bremen, Hanna-Kunath-Str. 11
^d Advanced Energy Technologies Ltd., Moscow

Abstract: General theoretical approaches to the modelling of Coulomb effects in short ion bunches, developed previously by the authors, are applied in this paper to the calculation of multireflection mass-spectrometer systems. A separate module of the MASIM 3D applied software package is designed. An adaptive computational procedure for calculating the 'mirror potential' induced by an ion bunch on the surface of field-forming electrodes is proposed. The dynamics of ion bunches in a time-of-flight reflectron-type mass analyser is calculated and the limitations on the resolving power, caused by resonant Coulomb effects of self-bunching and coalescence in the groups of particles with close masses, are revealed on the basis of numerical experiments.

Keywords: multireflection mass-spectrometer system, Coulomb interaction, perturbation theory, self-bunching and coalescence of ion bunches.

PACS: 07.75.+h, 41.75.-i, 41.85.-p

Received: 27.04.2015