Hi,
The data which is shown is the reflecance spectrum – the ratio between the spectrum of the illumination source and the spectrum of the reflected signal from the scanned sample.
After downloading the raw spectra, you will have access to both the reflectance spectrum, the raw signal from the sample and the raw signal from the illumination source.
“Processed”, “Normalized”, “Porcessed and Normalized” and “((log R))” and Normalized” are all pre-processing methods used in order to eliminate spectral and experimental issues.
When viewing the scans of a data collection, the pre-processing options allow you to view your data collection spectrum with different algorithms applied. These can help you identify outliers, inaccurate scans and reveal possible relationships in your data.
For further details please contact us at support@consumerphysics.com.