Table 2. Expected theoretical and measured resolutions by photon energy; the measured resolutions were evaluated using peak separations and by looking at the smallest peak widths found.

Photon energy (eV)	Expected resolution (eV)	Peak separation (eV)	Sigma width (eV)
4966	0.174	0.076	0.066
7112	0.263	0.248	0.646
8333	0.250	0.177	0.237
8996	0.315	0.337	0.309
12015	0.610	0.816	0.462