Table 5. Monochromator properties.

Material	Energy range	Bandwidth (ΔE/E)
Si (111)	2.05–20 keV	<2 × 10−4
InSb (111)	1.72–20 keV	<4 × 10−4
Mo-B4C 44 Å	1.8–2.5 keV	<2 × 10−2
Ni-B4C 39.5 Å	2.5–8 keV	<2 × 10−2
Mo-B4C 24 Å	8–20 keV	<2 × 10−2