Update Controls

2023-11-30 14:15:45 +01:00
parent 3fb9dc2020
commit 0a5eeba6ad

@ -4,19 +4,19 @@ List of controls consists of all parameters needed for proper dataset acquisitio
##### Beam
- **Aperture** probe forming aperture gives probe semi-angle (α)
- **Energy** energy of primary electron beam in keV ... gives final pixel size
- **Energy** energy of primary electron beam in keV
- **Probe** probe setting together with chosen probe forming aperture give probe current
- **Defocus** moves focus out of the sample plane - enlarges beam diameter
##### Scanning
- **Magnification** controls image field of view
- **Matrix** gives beam position to position distance + beam defocus = beam overlap
##### Camera length
- **Nominal CL** sample to detector distance gives maximal detected angle as well as angular sampling
- **Nominal CL** sample to detector distance (usually ADF) gives maximal detected angle as well as angular sampling
- **Use PAAR** Pumping Aperture Anglar Restriction, build-in aperture may limit maximal scattering angles for shortest camera lengths
##### Detection
- **Detector** detector used for data collection
- **Binning** reduction in pixel array size usually increas maximum frame rate
- **Dwell time** single position beam time ... check your detector characteristics
- **Binning** reduction in pixel array size usually increases maximum frame rate
- **Dwell time** single position beam time
Always carefully check maximal detector frame rate, needed binning and set dwell time!!