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skoupy_r
2024-03-15 16:46:53 +01:00
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@ -12,11 +12,10 @@ Electron probe shape can be reconstructed during iterative reconstruction, but i
w_{full} = \frac{\lambda \cdot CL_{eff}}{d_{eff}} [reference?]
```
where $`\lambda`$ is electron wavelength, $`CL_{eff}`$ the effective detector camera length and $`d_{eff}`$ the effective real space pixel size (including binning). $`w_{semi}`$ is then defined as $`w_{full}/2`$.
where $`\lambda`$ is electron wavelength, $`CL_{eff}`$ the effective detector camera length and $`d_{eff}`$ the effective real space pixel size (including binning).
##### Maximal usable defocus
Electron probe grows in size with induced defocus accordingly to the probe semi-angle. For proper reconstruction, the probe has to fit into \textit{probe window.} Maximum defocus which fits into the window is given by
Electron probe grows in size with induced defocus accordingly to the probe semi-angle. For proper reconstruction, the probe has to fit into _probe window_ with some safety margins (recommended is to use half of the window). Maximum defocus is so given by
```math
\Delta f_{max} = \frac{w_{full}/4}{\tan \alpha_{corr}} [to test]