1.7.8. gaussian_peak¶
Gaussian shaped peak
Parameter | Description | Units | Default value |
---|---|---|---|
scale | Source intensity | None | 1 |
background | Source background | cm-1 | 0.001 |
peak_pos | Peak position | Å-1 | 0.05 |
sigma | Peak width (standard deviation) | Å-1 | 0.005 |
The returned value is scaled to units of cm-1 sr-1, absolute scale.
Definition
This model describes a Gaussian shaped peak on a flat background
with the peak having height of scale centered at \(q_0\) and having a standard deviation of \(\sigma\). The FWHM (full-width half-maximum) is \(2.354 \sigma\).
For 2D data, scattering intensity is calculated in the same way as 1D, where the \(q\) vector is defined as

Fig. 1.99 Figure 1: 1D plot corresponding to the default parameters of the model.
References
None.