Skip to main content
. Author manuscript; available in PMC: 2021 Feb 20.
Published in final edited form as: J Microsc. 2020 Feb 20;277(2):71–78. doi: 10.1111/jmi.12865

Figure 1.

Figure 1.

Differential elastic scattering cross sections, as a function of polar scattering angle, for incident electrons of energy 300 keV for (A) osmium, (B) lead, and (C) uranium atoms. This is taken from the NIST standard reference database SRD 64 (ref), and as described by Salvat et al., 2005. Angles for two objective apertures in the FEI/Thermo Fisher Scientific Tecnai TF30 TEM are indicated: a 20-μm diameter aperture subtending scattering angles of 0.005 radian, and a 40-μm diameter aperture subtending scattering angles of 0.01 radian.