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EPJ Techniques and Instrumentation
Figure 1 | EPJ Techniques and Instrumentation

Figure 1

From: Novel method for state selective determination of electron-impact-excitation cross sections from 0° to 180°

Figure 1

Overview of all momenta of electrons and targets before and after the collision. Collision center is at O. For simplicity, only momentum transfer in the x-y plane is shown. Initial momenta are shown in dotted lines, final momenta in dashed lines, and the momentum transfer is shown in a solid line. Target momenta are shown in blue (thick), projectile momenta in red (thin).

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