Figure 4.

Simulation result of coma effect. The simulated donut-shaped focal spot intensity vs coma effect on the xy plane: (a) Ac = 0.5, (b) Ac = 0.25 and (c) Ac = 0.1. The corresponding intensity on the yz plane: (d) Ac = 0.5, (e) Ac = 0.25, and (f) Ac = 0.1. Intensity along the y axis: (g) Ac = 0.5, (h) Ac = 0.25, and (i) Ac = 0.1.

Zhang et al. Nanoscale Research Letters 2013 8:280   doi:10.1186/1556-276X-8-280
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