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70 5 Scintillator upgrade
Figure 5.6: Decay scheme of 116 Cd [16]
of these decays in all 64 Cd0.9Zn0.9Te of each 6.5 g is expected to be
smaller than 20 events per year.
The Q-value is 2805 keV and the end point of the sum energy spectrum
of the e − pair is 1511 keV. The first excited state of 116 Sn is at 1294 keV,
which is a 2 + state with a twofold forbidden transition to the ground
state and a half life of 0.37 ps [16].
Figure 5.7: Spectrum of deposited energy in CZT detectors and sum of
the deposited energy in CsI detectors.