Table 2. Comparison between the von Hamos (VH) and Laue spectrometers.

The efficiency values of the von Hamos spectrometer in Kα and Kβ measurements are set to 1.

	VH	Laue-Si	Laue-SiO2
Crystal	Silicon	Silicon	Quartz
Radius (m)	0.5	1.5	1.5
Open window	3 cm × 11 cm	3 cm × 8 cm	3 cm × 8 cm
Index	(111)	(111)	(110)
Efficiency at Nb Kα	1	∼4	∼11
Efficiency at Nb Kβ	1	∼8	∼22
Resolution at Nb Kβ (eV)	1.9	2.4	2.2