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Figure 5
(a) The calculated round source (δx = δy) focal intensity profiles from two different relative length capillaries, and compared with two ideal Gaussian profiles with the same FWHMs as the focal spots. For the LR = 1.0 capillary the intensity profile is quite close to Gaussian, but for the LR = 8 capillary the intensity profile deviates from Gaussian with more X-rays in the tails. (b) Both the ratio of the focal spot FWHM to r0 (dash-dot line) and the ratio of spot sizes to FWHMs (solid line and dotted line) increase as the capillary relative length increases.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 13| Part 1| December 2006| Pages 74-84
doi:10.1107/S0909049505038562
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