When the secondary electron generated from an x-ray interaction within a photoconductor deposits energy, clouds of charge carriers (electron–hole pairs) with random spatial and energy distributions are created. Even under high electric field bias, a fraction of the carriers recombine affecting the detection statistics. We propose and compare modeling approaches for recombination including a nearest-neighbor model (NN) and a first-hit model (FH) that recombines the first pair from the vector of candidate carriers. We find that the mean of the NN model correlates with the mean of the FH model but differs for individual clouds.

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