Design of Velocity Map Imaging Spectrometer Equipped with a Mass Gate Discriminating Particular Photofragments
Figure 7
Simulated trajectories of (a) , (b) , and (c) produced from C60. The initial kinetic energies of the ions were set to 0.1 eV. A pulsed voltage changing from −214 to −94 V was applied to the mass gate synchronously with the arrival timing of ions. Increase in their potential energies allows to pass through the retarding grid. The trajectories of can reach the PSD, whereas those of and turn around at the retarding grid and travel in the opposite direction. They terminate partly at the repeller electrode.
