Set Energy Range
The spectrometer can be set to give a variable energy range depending on the experimental requirements. To change the energy range:
- Set the energy range using the Dispersion setting that you can access via the ... option in the control region of the Microscope System palette.
- Use a small eV/ch setting (large dispersion) for detailed spectra around an edge or the ZLP.
- Use a large eV/ch setting (small dispersion) microanalysis or mapping.
Related content
Related FAQs
This depends on the type of experiment. For chemical mapping fine structure analysis, a higher energy resolution is required. Therefore higher dispersions (smaller eV/channel numbers) are required.
For compositional analysis, only lower dispersions (big numbers) are suited. In general for compositional analysis and fast mapping, a dispersion of 1 eV/ch seems to be optimal because it gives the biggest field of view (2000 eV in the GIF Quantum® system) and the highest intensity on the CCD and EELS.
