Figure 5
Measured energy spectra of uncollimated (a) 109Cd and (b) 57Co sources of pixel 4 of the array 0 (pixel pitch of 250 µm) at low-rate conditions (<600 cps). We measured energy-resolution (FWHM) values of 4% (0.9 keV) and 1.3% (1.6 keV) at 22.1 and 122.1 keV, respectively. |