作者: Fang Wang , Hai-Bo Zhang , Meng Cao , Ryuji Nishi , Akio Takaoka
DOI: 10.1016/J.MICRON.2010.05.014
关键词:
摘要: We have investigated the linear attenuation range of electron transmission through film specimens and its dependence on energy, acceptance half-angle a detector or an objective aperture, specimen properties, in scanning microscope (STEM) conventional (TEM). Electron bright-field mode was calculated by Monte Carlo simulation scattering, thickness then determined least squares fit. The corresponding shown to increase with energy half-angle, although it decreased atomic number materials. Under condition 300 kV STEM 3 MV ultra-high voltage (ultra-HVEM), could extend several microns for light materials, this validated experimental data ultra-HVEM. presented results can be helpful accurately measuring mass from transmission, estimating deviation linearity when tilting tomography.