FWHM

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full width half maximum

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FWHM

The width of a peak or the bandpass of an emission or absorption spectrum in a laboratory photometer or spectrophotometer. When combined with other characteristics of the device, this can be used to predict suitability of the photometer or spectrophotometer for specific applications and measurements.
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In this study, full width at half maximum (FWH[M.sub.x], FWH[M.sub.y]) were used to evaluate the reflecting light from the wood surface so that the wood surface roughness could be evaluated directly.
Table III Full Width at Half Maximum (FWHM) values for tektites from different locations.
TABLE 1: The (002) peak location and full width at half maximum of X- ray diffraction spectra of the AZO films deposited at room temperature (RT), 100[degrees]C, and 200[degrees]C before and after measuring TDS.
[beta] is the full width at half maximum of the diffraction peak corresponding to 2[theta].
The reasonable peak width definition [DELTA][omega] could be the FWHM (Full Width at Half Maximum) that is commonly used in different areas of spectral analysis.
Typical FWHM (full width at half maximum intensity) resolution numbers for MnK[alpha] are 130 eV for Si(Li) and about 18 % of the x-ray photon energy, or 1061 eV for the proportional counter.