Table 1.

Summary of measured FWHM in eV (energy resolution in %) and excess contributions, considering a Fano factor of 0.1 [33] and an electron-hole pair generation energy of 4.46 eV [41]. Measurements performed at 1 µs peaking time and +20 °C, except where indicated.

Spectral line	Fano limit FWHM	Pulser + Fano	Measured FWHM	Excess Contribution
5.9 keV (${}^{55}$Fe) 1	121 eV (2.1%)	224 eV (3.8%)	258 eV (4.4%)	128 eV (2.2%)
13.9 keV (${}^{241}$Am)	185 eV (1.3%)	290 eV (2.1%)	379 eV (2.7%)	244 eV (1.7%)
14.4 keV (${}^{57}$Co) 2	189 eV (1.3%)	339 eV (2.4%)	364 eV (2.5%)	132 eV (0.9%)
26.4 keV (${}^{241}$Am)	256 eV (1.0%)	338 eV (1.3%)	470 eV (1.8%)	327 eV (1.2%)
59.5 keV (${}^{241}$Am)	384 eV (0.6%)	444 eV (0.7%)	576 eV (1.0%)	367 eV (0.6%)
122 keV (${}^{57}$Co) 2	549 eV (0.4%)	617 eV (0.5%)	1.17 keV (1.0%)	997 eV (0.8%)

¹ Measurement performed at 1.4 µss peaking time. ² Measurement performed ad +26.3 °C.