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Figure 3
Numerical simulations of ion trajectories (blue lines) in the ion TOF spectrometer, varying the angle of their initial momentum from the x-axis. The cross-cuts of the cylindrically symmetric spectrometer's components are shown by black lines, labelled (see also Fig. 2[link]), and the applied voltages shown. The multicoloured curves represent isopotential surfaces, from red (most negative) to violet (most positive) values. Panel (a): trajectories of the N+ atomic ions with 4 eV initial kinetic energy, created in a point source. Voltages are optimized for best momentum imaging (see text for details). Panel (b): same conditions as for panel (a) with the added extraction pulse delay of 500 ns. Panel (c): same conditions as for panel (a), except using the lens voltage corresponding to the settings in the reported experiment in Figs. 5[link] and 6[link].

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 27| Part 4| July 2020| Pages 1080-1091
https://doi.org/10.1107/S1600577520007146
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