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Figure 10
Theoretical vertical (a) and horizontal (b) FWHM spot size at the sample as a function of the nominal demagnification r/r′ for refocusing with a typical toroidal and ellipsoidal mirror. Owing to reduced aberrations the latter allows much smaller spot size when increasing r/r′.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
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