The peak skewness tab contains settings for fits that control skewness of the peaks.

It contains two panels: one for skew on the low-energy side of the peak (left skew), and one for the high-energy side of the peak (right skew).

Left skew (on low-energy side of peaks)

Left skew enabled

If enabled, the peak evaluator tries to incorporate a relatively sharp peak function into the low energy side of the peaks, which decreases rapidly close to the peak centroid. This peak function is able to describe the slight broadening of the Gaussians' left bottom. The area of the left skew is also added to the reported peak area. Default value is Enabled.

Left skew amplitude minimum

Lower limit of Left skew amplitude, relative to peak amplitude. Default value is 1e-10; should not be less than this value.

Left skew amplitude maximum

Upper limit of Left skew amplitude, relative to peak amplitude. Default value is 0.75 .

Left skew slope minimum

Lower limit of Left skew slope. Default value is 0.3 .

Left skew slope maximum

Upper limit of Left skew slope. Default value is 2.0; should not be less than this value.

Left skew slope initial value

Value of Left skew slope used initially when starting a region fit. Must be between Minimum and Maximum values. Default value is 0.5 .

Right skew (on high-energy side of peaks)

Right skew enabled

If enabled, the peak evaluator tries to incorporate a relatively sharp peak function into the high energy side of the peaks, which decreases rapidly close to the peak centroid. This peak function is able to describe the slight broadening of the Gaussians' right bottom. The area of the Right skew is also added to the reported peak area. Default value is Enabled.

Right skew amplitude minimum

Lower limit of Right skew amplitude, relative to peak amplitude. Default value is 1e-10; should not be less than this value.

Right skew amplitude maximum

Upper limit of Right skew amplitude, relative to peak amplitude. Default value is 0.75

Right skew slope minimum

Lower limit of Right skew slope. Default value is 0.3.

Right skew slope maximum

Upper limit of Right skew slope. Default value is 2.0; should not be less than this value.

Right skew slope initial value

Value of Right skew slope used initially when starting a region fit. Must be between Minimum and Maximum values. Default value is 0.5.

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