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NLLS Models

Below are the most common models that researchers use to analyze cathodoluminescence spectra.

 

The Least-Square Fitting tool supports multiple models for NLLS fitting that can be combined into a single fit. This section describes the various models in detail.

Gaussian

Image showing NLLS model options used for least‑squares fitting in CL analysis
   

Peak-function is characterized by a maximum position and intensity as well as the peak-width measured as the full width at half-maximum.

 

Non-Negative Gaussian – Limits the amplitude to positive values.

Image showing Lorentzian model selection used for NLLS least‑squares CL fitting.
   

Lorentzian

Peak-function characterized by a maximum position and intensity and the peak-width measured as the full width at half-maximum.

Image showing Lorentzian model selection used for NLLS least‑squares CL fitting.
   
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