Table 2.

Comparison of the simulated with the measured peak visibility of the nGI-setup.

DC0	G1	Wavelength range	h1(μm)	Total exposure (s)	λ(Å)	Measurement	Simulation
						Peak visibility	Peak visibility
0.4	π	3.0 Å–5.75 Å	43	1280	3.9	0.21	–
0.18	π	3.5 Å–4.5 Å	41	240	4.0	0.74	0.80
0.28	π	1.6 Å–6.0 Å	41	480	4.0	0.69	0.74
0.38	π	3.5 Å–4.5 Å	41	240	4.0	0.63	0.66
0.48	π	3.5 Å–4.5 Å	41	240	4.0	0.54	0.57
0.28	3π	1.6 Å–6.0 Å	123	480	3.75	0.60	0.61

For the simulations (see Sec. 2.1) the effective parameters listed in Table 1 have been used. The measured visibility of the new setup is significantly larger than the visibility of the previous setup (first row) and approaches the theoretical optimum.