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Figure 3
(a) Scattering and noise levels (due to damage only) as a function of pulse duration for constant incident intensity (5 × 1020 W cm−2) at 8 keV photon energy and 100 × 100 nm spot size. B(q) is proportional to the speckle contrast and we define N(q) ≡ [{[\sigma^2_A(q)/N + \sigma^2_B(q)]}^{1/2}], which is the denominator in equation (12)[link] and measures the average contribution to the damage noise per atom. (b) Signal-to-noise ratios with and without shot noise for a resolution of 0.15 nm.

IUCrJ
Volume 2| Part 6| October 2015| Pages 661-674
ISSN: 2052-2525
doi:10.1107/S2052252515016887