Xrf fit

Isn’t this value the conversion from \sigma to FWHM for a gaussian?

S
On Aug 13, 2014, at 5:33 PM, Eric Dill <notifications@github.com<mailto:notifications@github.com>> wrote:


In nsls2/fitting/model/physics_peak.py:

> +        energy value
> +    epsilon : float
> +        nergy to create a hole-electron pair
> +        for Ge 2.96, for Si 3.61 at 300K
> +        needs to double check this value
> +
> +    Returns:
> +    --------
> +    value : array
> +        elastic peak
> +    sigma : float
> +        peak width
> +
> +    """
> +
> +    temp_val = 2 * np.sqrt(2 * np.log(2))


Where does this value come from?

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