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FWHM of a gaussian function

by peterjaybee
Tags: function, fwhm, gaussian
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Apr20-10, 11:32 AM
P: 62

I have a gaussian of the form

I know that the FWHM=0.939A, but I cannot prove it.

I Let [tex]exp[-\frac{\pi*x^{2}}{A^2}=0.5[/tex] (i.e. the half maximum part)

taking natural logs I get rid of the exponential, but then which bit represents the full width?
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Apr20-10, 04:23 PM
Sci Advisor
P: 6,106
Write x = kA and compute k=(-ln(.5)/π)1/2

Your Gaussian looks funny.

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