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Figure 2
Dependence of the m = 1 beam waist radius r on the convergence semi-angle α for 200 keV electrons (Löffler, 2013 ![]() |
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Figure 2
Dependence of the m = 1 beam waist radius r on the convergence semi-angle α for 200 keV electrons (Löffler, 2013 ![]() |