full width at half maximum


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full width at half maximum

[′fu̇l ‚width at ′haf ′mak·sə·məm]
(physics)
The difference between the energies or frequencies on either side of a spectral line or resonance curve at which the line absorption or emission or the resonant quantity reaches half its maximum intensity. Abbreviated FWHM.
References in periodicals archive ?
Generally, the full width at half maximum is used to evaluate Gaussian function instead of its standard deviation.
For now, the [omega] scans show that the (111) texture was strongest, with a full width at half maximum (FWHM) of 8.