Figure 7.

Illustration of pixel data showing charge trapping and charge release. For (a) M13 and (b) HOFFA, pixel signal, Q_pix, is plotted as a function of consecutive frame number for an acquisition sequence consisting of 20 dark frames, followed by 40 image frames (using a flashing LED), and a final 40 dark frames. For the sequences shown, V_bias was set to 2 V and the image frames were acquired at a pixel signal size of ∼6% of saturation. The labels Q_F, Q_N, and Q_EQ are related to pixel signal sizes used in the determination of Q_trap and Q_release, as discussed in the text.