Tutorial01

Fitting the complex refractive index by automatic mode

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In this tutorial, we will use the C=O stretching region of dimethyl carbonate (DMC) as an example. The initial parameters in the fitting procedure are automatically determined by ComplexRI.

The ATR-IR experimental data file in this tutorial can be downloaded Here. Use Ctrl + s to save the file in your local computer. The file name is “data_DMC_2col.txt”.

Then, please move to the Main Package page.

Upload the“data_DMC_2col.txt” in ① and set the other parameters according to the following figure. (For the meanings of each part, please refer to ➡Manual.)

Now, please click the “Execute Fitting” to start fitting.

Results of Tutorial01

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The Result should be like follows.

The above spectra of complex refractive index are expressed by

$n({\tilde {\nu }})=\eta ({\tilde {\nu }})+i\kappa ({\tilde {\nu }})=n_{j}^{0}+\sum _{l}{\frac {A_{l}}{{\tilde {\nu }}_{l}-{\tilde {\nu }}-i\gamma _{l}}}$

The meaning of each output can be found in ➡Manual

Tutorial02