Table 2. Relevant criteria for the synchrotron radiation spectra in 3 T with different filtration modes.

An energy threshold of 20–500 keV is applied to the data set with a bin size of 0.1 keV. TD stands for transmission detector.

Criterion	Mode	Without TD	With 10 µm TD	With 375 µm TD
Maximum energy (keV)	Al/Al	39.9 ± 0.1	39.9 ± 0.1	41.9 ± 0.1
Mean energy (keV)	Al/Al	35.2 ± 0.1	35.1 ± 0.1	35.4 ± 0.1
Maximum energy (keV)	Cu/Al	67.9 ± 0.1	67.9 ± 0.1	68.9 ± 0.1
Mean energy (keV)	Cu/Al	61.9 ± 0.1	61.9 ± 0.1	62.0 ± 0.1
Maximum energy (keV)	Cu/Cu	80.9 ± 0.1	80.9 ± 0.1	79.9 ± 0.1
Mean energy (keV)	Cu/Cu	71.1 ± 0.1	71.2 ± 0.1	71.3 ± 0.1