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Figure 3
The residual effect (in terms of Ireference /ILaue contoured for values of 1.4, 1.7 and 2.0) after non-uniformity correction performed at one wavelength. Note that the calculation was performed by the LAUESCALE program (Helliwell, Habash et al., 1989BB28; Maginn et al., 1993BB38) which applies wavelength normalization and sample absorption corrections to each Laue image. Here it can be assumed that the sample absorption effect is negligible and the correction can therefore be used to estimate the non-uniformity of response of the detector. The reference data set used in the contour plot calculation was the MAD data of selenomethionine-labelled HMBS at 2.4 Å (at room temperature) (Hädener et al., 1999BB20). The circle of 55 mm radius is shown.

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