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![[Figure 2]](zt5006fig2mag.jpg)
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Figure 2
Convergence testing of REFLEC and MLgrating is presented as a function of m_max, the maximum diffraction order simulated. Here the grating was assumed to be made entirely of rhodium, N = 800 lines mm−1, H = 42.5 nm, Γ = 0.65, T = 90°, m = −1 and cff = 2. Panels (a)–(c) present grating efficiency simulations performed in MLgrating for different values of m_max: (a) 5, (b) 11 and (c) 17, together with corresponding simulations performed in REFLEC. In (d) a MLgrating simulation using m_max = 70 is presented, and compared with a REFLEC simulation using the maximum number of Fourier coefficients possible (equivalent to m_max = 17). The asterisks highlight regions where the two simulations significantly deviate from one another. In (e) the MLgrating grating efficiency versus m_max is plotted for various energies, showing how the grating efficiency simulation converges as m_max is increased. |
![[Figure 2]](zt5006fig2.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
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