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Figure 2: Point divergent source on Z-axis (Case 1) showing the electron beam divergence angle which is the half angle of the circular field at the point of incidence (14°) and the directions of X, Y and Z axes. The beam is centered on the Z axis

Figure 2: Point divergent source on Z-axis (Case 1) showing the electron beam divergence angle which is the half angle of the circular field at the point of incidence (14°) and the directions of X, Y and Z axes. The beam is centered on the Z axis