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Figure 2
Height profiles of an aluminium, a nickel and a beryllium lens measured by white-light interferometry. The profiles are displaced in the vertical by 10 µm. The parabolic fit gives the quoted values of R and a surface roughness far below 1 µm.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 9| Part 3| April 2002| Pages 119-124
doi:10.1107/S0909049502003436
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